Package ais :: Module waterlevel
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Source Code for Module ais.waterlevel

  1  #!/usr/bin/env python 
  2   
  3  __version__ = '$Revision: 4791 $'.split()[1] 
  4  __date__ = '$Date: 2007-01-05 $'.split()[1] 
  5  __author__ = 'xmlbinmsg' 
  6   
  7  __doc__=''' 
  8   
  9  Autogenerated python functions to serialize/deserialize binary messages. 
 10   
 11  Generated by: ./aisxmlbinmsg2py.py 
 12   
 13  Need to then wrap these functions with the outer AIS packet and then 
 14  convert the whole binary blob to a NMEA string.  Those functions are 
 15  not currently provided in this file. 
 16   
 17  serialize: python to ais binary 
 18  deserialize: ais binary to python 
 19   
 20  The generated code uses translators.py, binary.py, and aisstring.py 
 21  which should be packaged with the resulting files. 
 22   
 23   
 24  @requires: U{epydoc<http://epydoc.sourceforge.net/>} > 3.0alpha3 
 25  @requires: U{BitVector<http://cheeseshop.python.org/pypi/BitVector>} 
 26   
 27  @author: '''+__author__+''' 
 28  @version: ''' + __version__ +''' 
 29  @var __date__: Date of last svn commit 
 30  @undocumented: __version__ __author__ __doc__ parser 
 31  @status: under development 
 32  @license: Generated code has no license 
 33  ''' 
 34   
 35  import sys 
 36  from decimal import Decimal 
 37  from BitVector import BitVector 
 38   
 39  import binary, aisstring 
 40   
 41  # FIX: check to see if these will be needed 
 42  TrueBV  = BitVector(bitstring="1") 
 43  "Why always rebuild the True bit?  This should speed things up a bunch" 
 44  FalseBV = BitVector(bitstring="0") 
 45  "Why always rebuild the False bit?  This should speed things up a bunch" 
 46   
 47   
48 -def encode(params, validate=False):
49 '''Create a waterlevel binary message payload to pack into an AIS Msg waterlevel. 50 51 Fields in params: 52 - dac(uint): Designated Area Code (field automatically set to "366") 53 - fid(uint): Functional Identifier (field automatically set to "1") 54 - efid(uint): extended functional identifier (field automatically set to "1") 55 - timetag_month(uint): Time the measurement represents month 1..12 56 - timetag_day(uint): Time the measurement represents day of the month 1..31 57 - timetag_hour(uint): Time the measurement represents UTC hours 0..23 58 - timetag_min(uint): Time the measurement represents minutes 59 - timetag_sec(uint): Time the measurement represents seconds 60 - stationid(aisstr6): Character identifier of the station. Usually a number. 61 - stationloc_longitude(decimal): Location of the sensor taking the water level measurement or position of prediction East West location 62 - stationloc_latitude(decimal): Location of the sensor taking the water level measurement or position of prediction North South location 63 - waterlevel(int): Water level in centimeters 64 - datum(uint): What reference datum applies to the value 65 - sigma(float): Standard deviation of 1 second samples used to compute the water level height 66 - o(uint): Count of number of samples that fall outside a 3-sigma band about the mean 67 - levelinferred(bool): indicates that the water level value has been inferred 68 - flat_tolerance_exceeded(bool): flat tolerance limit was exceeded. Need better descr 69 - rate_tolerance_exceeded(bool): rate of change tolerance limit was exceeded 70 - temp_tolerance_exceeded(bool): temperature difference tolerance limit was exceeded 71 - expected_height_exceeded(bool): either the maximum or minimum expected water level height limit was exceeded 72 - link_down(bool): Unable to communicate with the tide system. All data invalid 73 - timeLastMeasured_month(uint): Time since last measured value was available month 1..12 74 - timeLastMeasured_day(uint): Time since last measured value was available day of the month 1..31 75 - timeLastMeasured_hour(uint): Time since last measured value was available UTC hours 0..23 76 - timeLastMeasured_min(uint): Time since last measured value was available minutes 77 - timeLastMeasured_sec(uint): Time since last measured value was available seconds 78 @param params: Dictionary of field names/values. Throws a ValueError exception if required is missing 79 @param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented. 80 @rtype: BitVector 81 @return: encoded binary message (for binary messages, this needs to be wrapped in a msg 8 82 @note: The returned bits may not be 6 bit aligned. It is up to you to pad out the bits. 83 ''' 84 85 bvList = [] 86 bvList.append(binary.setBitVectorSize(BitVector(intVal=366),16)) 87 bvList.append(binary.setBitVectorSize(BitVector(intVal=1),4)) 88 bvList.append(binary.setBitVectorSize(BitVector(intVal=1),12)) 89 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['timetag_month']),4)) 90 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['timetag_day']),5)) 91 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['timetag_hour']),5)) 92 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['timetag_min']),6)) 93 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['timetag_sec']),6)) 94 if 'stationid' in params: 95 bvList.append(aisstring.encode(params['stationid'],42)) 96 else: 97 bvList.append(aisstring.encode('@@@@@@@',42)) 98 if 'stationloc_longitude' in params: 99 bvList.append(binary.bvFromSignedInt(int(Decimal(params['stationloc_longitude'])*Decimal('600000')),28)) 100 else: 101 bvList.append(binary.bvFromSignedInt(108600000,28)) 102 if 'stationloc_latitude' in params: 103 bvList.append(binary.bvFromSignedInt(int(Decimal(params['stationloc_latitude'])*Decimal('600000')),27)) 104 else: 105 bvList.append(binary.bvFromSignedInt(54600000,27)) 106 if 'waterlevel' in params: 107 bvList.append(binary.bvFromSignedInt(params['waterlevel'],16)) 108 else: 109 bvList.append(binary.bvFromSignedInt(-32768,16)) 110 if 'datum' in params: 111 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['datum']),5)) 112 else: 113 bvList.append(binary.setBitVectorSize(BitVector(intVal=31),5)) 114 bvList.append(binary.float2bitvec(params['sigma'])) 115 if 'o' in params: 116 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['o']),8)) 117 else: 118 bvList.append(binary.setBitVectorSize(BitVector(intVal=255),8)) 119 if params["levelinferred"]: bvList.append(TrueBV) 120 else: bvList.append(FalseBV) 121 if params["flat_tolerance_exceeded"]: bvList.append(TrueBV) 122 else: bvList.append(FalseBV) 123 if params["rate_tolerance_exceeded"]: bvList.append(TrueBV) 124 else: bvList.append(FalseBV) 125 if params["temp_tolerance_exceeded"]: bvList.append(TrueBV) 126 else: bvList.append(FalseBV) 127 if params["expected_height_exceeded"]: bvList.append(TrueBV) 128 else: bvList.append(FalseBV) 129 if params["link_down"]: bvList.append(TrueBV) 130 else: bvList.append(FalseBV) 131 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['timeLastMeasured_month']),4)) 132 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['timeLastMeasured_day']),5)) 133 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['timeLastMeasured_hour']),5)) 134 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['timeLastMeasured_min']),6)) 135 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['timeLastMeasured_sec']),6)) 136 137 return binary.joinBV(bvList)
138
139 -def decode(bv, validate=False):
140 '''Unpack a waterlevel message 141 142 Fields in params: 143 - dac(uint): Designated Area Code (field automatically set to "366") 144 - fid(uint): Functional Identifier (field automatically set to "1") 145 - efid(uint): extended functional identifier (field automatically set to "1") 146 - timetag_month(uint): Time the measurement represents month 1..12 147 - timetag_day(uint): Time the measurement represents day of the month 1..31 148 - timetag_hour(uint): Time the measurement represents UTC hours 0..23 149 - timetag_min(uint): Time the measurement represents minutes 150 - timetag_sec(uint): Time the measurement represents seconds 151 - stationid(aisstr6): Character identifier of the station. Usually a number. 152 - stationloc_longitude(decimal): Location of the sensor taking the water level measurement or position of prediction East West location 153 - stationloc_latitude(decimal): Location of the sensor taking the water level measurement or position of prediction North South location 154 - waterlevel(int): Water level in centimeters 155 - datum(uint): What reference datum applies to the value 156 - sigma(float): Standard deviation of 1 second samples used to compute the water level height 157 - o(uint): Count of number of samples that fall outside a 3-sigma band about the mean 158 - levelinferred(bool): indicates that the water level value has been inferred 159 - flat_tolerance_exceeded(bool): flat tolerance limit was exceeded. Need better descr 160 - rate_tolerance_exceeded(bool): rate of change tolerance limit was exceeded 161 - temp_tolerance_exceeded(bool): temperature difference tolerance limit was exceeded 162 - expected_height_exceeded(bool): either the maximum or minimum expected water level height limit was exceeded 163 - link_down(bool): Unable to communicate with the tide system. All data invalid 164 - timeLastMeasured_month(uint): Time since last measured value was available month 1..12 165 - timeLastMeasured_day(uint): Time since last measured value was available day of the month 1..31 166 - timeLastMeasured_hour(uint): Time since last measured value was available UTC hours 0..23 167 - timeLastMeasured_min(uint): Time since last measured value was available minutes 168 - timeLastMeasured_sec(uint): Time since last measured value was available seconds 169 @type bv: BitVector 170 @param bv: Bits defining a message 171 @param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented. 172 @rtype: dict 173 @return: params 174 ''' 175 176 #Would be nice to check the bit count here.. 177 #if validate: 178 # assert (len(bv)==FIX: SOME NUMBER) 179 r = {} 180 r['dac']=366 181 r['fid']=1 182 r['efid']=1 183 r['timetag_month']=int(bv[32:36]) 184 r['timetag_day']=int(bv[36:41]) 185 r['timetag_hour']=int(bv[41:46]) 186 r['timetag_min']=int(bv[46:52]) 187 r['timetag_sec']=int(bv[52:58]) 188 r['stationid']=aisstring.decode(bv[58:100]) 189 r['stationloc_longitude']=Decimal(binary.signedIntFromBV(bv[100:128]))/Decimal('600000') 190 r['stationloc_latitude']=Decimal(binary.signedIntFromBV(bv[128:155]))/Decimal('600000') 191 r['waterlevel']=binary.signedIntFromBV(bv[155:171]) 192 r['datum']=int(bv[171:176]) 193 r['sigma']=binary.bitvec2float(bv[176:208]) 194 r['o']=int(bv[208:216]) 195 r['levelinferred']=bool(int(bv[216:217])) 196 r['flat_tolerance_exceeded']=bool(int(bv[217:218])) 197 r['rate_tolerance_exceeded']=bool(int(bv[218:219])) 198 r['temp_tolerance_exceeded']=bool(int(bv[219:220])) 199 r['expected_height_exceeded']=bool(int(bv[220:221])) 200 r['link_down']=bool(int(bv[221:222])) 201 r['timeLastMeasured_month']=int(bv[222:226]) 202 r['timeLastMeasured_day']=int(bv[226:231]) 203 r['timeLastMeasured_hour']=int(bv[231:236]) 204 r['timeLastMeasured_min']=int(bv[236:242]) 205 r['timeLastMeasured_sec']=int(bv[242:248]) 206 return r
207
208 -def decodedac(bv, validate=False):
209 return 366
210
211 -def decodefid(bv, validate=False):
212 return 1
213
214 -def decodeefid(bv, validate=False):
215 return 1
216
217 -def decodetimetag_month(bv, validate=False):
218 return int(bv[32:36])
219
220 -def decodetimetag_day(bv, validate=False):
221 return int(bv[36:41])
222
223 -def decodetimetag_hour(bv, validate=False):
224 return int(bv[41:46])
225
226 -def decodetimetag_min(bv, validate=False):
227 return int(bv[46:52])
228
229 -def decodetimetag_sec(bv, validate=False):
230 return int(bv[52:58])
231
232 -def decodestationid(bv, validate=False):
233 return aisstring.decode(bv[58:100])
234
235 -def decodestationloc_longitude(bv, validate=False):
236 return Decimal(binary.signedIntFromBV(bv[100:128]))/Decimal('600000')
237
238 -def decodestationloc_latitude(bv, validate=False):
239 return Decimal(binary.signedIntFromBV(bv[128:155]))/Decimal('600000')
240
241 -def decodewaterlevel(bv, validate=False):
242 return binary.signedIntFromBV(bv[155:171])
243
244 -def decodedatum(bv, validate=False):
245 return int(bv[171:176])
246
247 -def decodesigma(bv, validate=False):
248 return binary.bitvec2float(bv[176:208])
249
250 -def decodeo(bv, validate=False):
251 return int(bv[208:216])
252
253 -def decodelevelinferred(bv, validate=False):
254 return bool(int(bv[216:217]))
255
256 -def decodeflat_tolerance_exceeded(bv, validate=False):
257 return bool(int(bv[217:218]))
258
259 -def decoderate_tolerance_exceeded(bv, validate=False):
260 return bool(int(bv[218:219]))
261
262 -def decodetemp_tolerance_exceeded(bv, validate=False):
263 return bool(int(bv[219:220]))
264
265 -def decodeexpected_height_exceeded(bv, validate=False):
266 return bool(int(bv[220:221]))
267 270
271 -def decodetimeLastMeasured_month(bv, validate=False):
272 return int(bv[222:226])
273
274 -def decodetimeLastMeasured_day(bv, validate=False):
275 return int(bv[226:231])
276
277 -def decodetimeLastMeasured_hour(bv, validate=False):
278 return int(bv[231:236])
279
280 -def decodetimeLastMeasured_min(bv, validate=False):
281 return int(bv[236:242])
282
283 -def decodetimeLastMeasured_sec(bv, validate=False):
284 return int(bv[242:248])
285 286
287 -def printHtml(params, out=sys.stdout):
288 out.write("<h3>waterlevel<h3>\n") 289 out.write("<table border=\"1\">\n") 290 out.write("<tr bgcolor=\"orange\">\n") 291 out.write("<th align=\"left\">Field Name</th>\n") 292 out.write("<th align=\"left\">Type</th>\n") 293 out.write("<th align=\"left\">Value</th>\n") 294 out.write("<th align=\"left\">Value in Lookup Table</th>\n") 295 out.write("\n") 296 out.write("<tr>\n") 297 out.write("<td>dac</td>\n") 298 out.write("<td>uint</td>\n") 299 if 'dac' in params: 300 out.write(" <td>"+str(params['dac'])+"</td>\n") 301 out.write(" <td>"+str(params['dac'])+"</td>\n") 302 out.write("</tr>\n") 303 out.write("\n") 304 out.write("<tr>\n") 305 out.write("<td>fid</td>\n") 306 out.write("<td>uint</td>\n") 307 if 'fid' in params: 308 out.write(" <td>"+str(params['fid'])+"</td>\n") 309 out.write(" <td>"+str(params['fid'])+"</td>\n") 310 out.write("</tr>\n") 311 out.write("\n") 312 out.write("<tr>\n") 313 out.write("<td>efid</td>\n") 314 out.write("<td>uint</td>\n") 315 if 'efid' in params: 316 out.write(" <td>"+str(params['efid'])+"</td>\n") 317 out.write(" <td>"+str(params['efid'])+"</td>\n") 318 out.write("</tr>\n") 319 out.write("\n") 320 out.write("<tr>\n") 321 out.write("<td>timetag_month</td>\n") 322 out.write("<td>uint</td>\n") 323 if 'timetag_month' in params: 324 out.write(" <td>"+str(params['timetag_month'])+"</td>\n") 325 out.write(" <td>"+str(params['timetag_month'])+"</td>\n") 326 out.write("</tr>\n") 327 out.write("\n") 328 out.write("<tr>\n") 329 out.write("<td>timetag_day</td>\n") 330 out.write("<td>uint</td>\n") 331 if 'timetag_day' in params: 332 out.write(" <td>"+str(params['timetag_day'])+"</td>\n") 333 out.write(" <td>"+str(params['timetag_day'])+"</td>\n") 334 out.write("</tr>\n") 335 out.write("\n") 336 out.write("<tr>\n") 337 out.write("<td>timetag_hour</td>\n") 338 out.write("<td>uint</td>\n") 339 if 'timetag_hour' in params: 340 out.write(" <td>"+str(params['timetag_hour'])+"</td>\n") 341 out.write(" <td>"+str(params['timetag_hour'])+"</td>\n") 342 out.write("</tr>\n") 343 out.write("\n") 344 out.write("<tr>\n") 345 out.write("<td>timetag_min</td>\n") 346 out.write("<td>uint</td>\n") 347 if 'timetag_min' in params: 348 out.write(" <td>"+str(params['timetag_min'])+"</td>\n") 349 out.write(" <td>"+str(params['timetag_min'])+"</td>\n") 350 out.write("</tr>\n") 351 out.write("\n") 352 out.write("<tr>\n") 353 out.write("<td>timetag_sec</td>\n") 354 out.write("<td>uint</td>\n") 355 if 'timetag_sec' in params: 356 out.write(" <td>"+str(params['timetag_sec'])+"</td>\n") 357 out.write(" <td>"+str(params['timetag_sec'])+"</td>\n") 358 out.write("</tr>\n") 359 out.write("\n") 360 out.write("<tr>\n") 361 out.write("<td>stationid</td>\n") 362 out.write("<td>aisstr6</td>\n") 363 if 'stationid' in params: 364 out.write(" <td>"+str(params['stationid'])+"</td>\n") 365 out.write(" <td>"+str(params['stationid'])+"</td>\n") 366 out.write("</tr>\n") 367 out.write("\n") 368 out.write("<tr>\n") 369 out.write("<td>stationloc_longitude</td>\n") 370 out.write("<td>decimal</td>\n") 371 if 'stationloc_longitude' in params: 372 out.write(" <td>"+str(params['stationloc_longitude'])+"</td>\n") 373 out.write(" <td>"+str(params['stationloc_longitude'])+"</td>\n") 374 out.write("</tr>\n") 375 out.write("\n") 376 out.write("<tr>\n") 377 out.write("<td>stationloc_latitude</td>\n") 378 out.write("<td>decimal</td>\n") 379 if 'stationloc_latitude' in params: 380 out.write(" <td>"+str(params['stationloc_latitude'])+"</td>\n") 381 out.write(" <td>"+str(params['stationloc_latitude'])+"</td>\n") 382 out.write("</tr>\n") 383 out.write("\n") 384 out.write("<tr>\n") 385 out.write("<td>waterlevel</td>\n") 386 out.write("<td>int</td>\n") 387 if 'waterlevel' in params: 388 out.write(" <td>"+str(params['waterlevel'])+"</td>\n") 389 out.write(" <td>"+str(params['waterlevel'])+"</td>\n") 390 out.write("</tr>\n") 391 out.write("\n") 392 out.write("<tr>\n") 393 out.write("<td>datum</td>\n") 394 out.write("<td>uint</td>\n") 395 if 'datum' in params: 396 out.write(" <td>"+str(params['datum'])+"</td>\n") 397 if str(params['datum']) in datumDecodeLut: 398 out.write("<td>"+datumDecodeLut[str(params['datum'])]+"</td>") 399 else: 400 out.write("<td><i>Missing LUT entry</i></td>") 401 out.write("</tr>\n") 402 out.write("\n") 403 out.write("<tr>\n") 404 out.write("<td>sigma</td>\n") 405 out.write("<td>float</td>\n") 406 if 'sigma' in params: 407 out.write(" <td>"+str(params['sigma'])+"</td>\n") 408 out.write(" <td>"+str(params['sigma'])+"</td>\n") 409 out.write("</tr>\n") 410 out.write("\n") 411 out.write("<tr>\n") 412 out.write("<td>o</td>\n") 413 out.write("<td>uint</td>\n") 414 if 'o' in params: 415 out.write(" <td>"+str(params['o'])+"</td>\n") 416 out.write(" <td>"+str(params['o'])+"</td>\n") 417 out.write("</tr>\n") 418 out.write("\n") 419 out.write("<tr>\n") 420 out.write("<td>levelinferred</td>\n") 421 out.write("<td>bool</td>\n") 422 if 'levelinferred' in params: 423 out.write(" <td>"+str(params['levelinferred'])+"</td>\n") 424 out.write(" <td>"+str(params['levelinferred'])+"</td>\n") 425 out.write("</tr>\n") 426 out.write("\n") 427 out.write("<tr>\n") 428 out.write("<td>flat_tolerance_exceeded</td>\n") 429 out.write("<td>bool</td>\n") 430 if 'flat_tolerance_exceeded' in params: 431 out.write(" <td>"+str(params['flat_tolerance_exceeded'])+"</td>\n") 432 out.write(" <td>"+str(params['flat_tolerance_exceeded'])+"</td>\n") 433 out.write("</tr>\n") 434 out.write("\n") 435 out.write("<tr>\n") 436 out.write("<td>rate_tolerance_exceeded</td>\n") 437 out.write("<td>bool</td>\n") 438 if 'rate_tolerance_exceeded' in params: 439 out.write(" <td>"+str(params['rate_tolerance_exceeded'])+"</td>\n") 440 out.write(" <td>"+str(params['rate_tolerance_exceeded'])+"</td>\n") 441 out.write("</tr>\n") 442 out.write("\n") 443 out.write("<tr>\n") 444 out.write("<td>temp_tolerance_exceeded</td>\n") 445 out.write("<td>bool</td>\n") 446 if 'temp_tolerance_exceeded' in params: 447 out.write(" <td>"+str(params['temp_tolerance_exceeded'])+"</td>\n") 448 out.write(" <td>"+str(params['temp_tolerance_exceeded'])+"</td>\n") 449 out.write("</tr>\n") 450 out.write("\n") 451 out.write("<tr>\n") 452 out.write("<td>expected_height_exceeded</td>\n") 453 out.write("<td>bool</td>\n") 454 if 'expected_height_exceeded' in params: 455 out.write(" <td>"+str(params['expected_height_exceeded'])+"</td>\n") 456 out.write(" <td>"+str(params['expected_height_exceeded'])+"</td>\n") 457 out.write("</tr>\n") 458 out.write("\n") 459 out.write("<tr>\n") 460 out.write("<td>link_down</td>\n") 461 out.write("<td>bool</td>\n") 462 if 'link_down' in params: 463 out.write(" <td>"+str(params['link_down'])+"</td>\n") 464 out.write(" <td>"+str(params['link_down'])+"</td>\n") 465 out.write("</tr>\n") 466 out.write("\n") 467 out.write("<tr>\n") 468 out.write("<td>timeLastMeasured_month</td>\n") 469 out.write("<td>uint</td>\n") 470 if 'timeLastMeasured_month' in params: 471 out.write(" <td>"+str(params['timeLastMeasured_month'])+"</td>\n") 472 out.write(" <td>"+str(params['timeLastMeasured_month'])+"</td>\n") 473 out.write("</tr>\n") 474 out.write("\n") 475 out.write("<tr>\n") 476 out.write("<td>timeLastMeasured_day</td>\n") 477 out.write("<td>uint</td>\n") 478 if 'timeLastMeasured_day' in params: 479 out.write(" <td>"+str(params['timeLastMeasured_day'])+"</td>\n") 480 out.write(" <td>"+str(params['timeLastMeasured_day'])+"</td>\n") 481 out.write("</tr>\n") 482 out.write("\n") 483 out.write("<tr>\n") 484 out.write("<td>timeLastMeasured_hour</td>\n") 485 out.write("<td>uint</td>\n") 486 if 'timeLastMeasured_hour' in params: 487 out.write(" <td>"+str(params['timeLastMeasured_hour'])+"</td>\n") 488 out.write(" <td>"+str(params['timeLastMeasured_hour'])+"</td>\n") 489 out.write("</tr>\n") 490 out.write("\n") 491 out.write("<tr>\n") 492 out.write("<td>timeLastMeasured_min</td>\n") 493 out.write("<td>uint</td>\n") 494 if 'timeLastMeasured_min' in params: 495 out.write(" <td>"+str(params['timeLastMeasured_min'])+"</td>\n") 496 out.write(" <td>"+str(params['timeLastMeasured_min'])+"</td>\n") 497 out.write("</tr>\n") 498 out.write("\n") 499 out.write("<tr>\n") 500 out.write("<td>timeLastMeasured_sec</td>\n") 501 out.write("<td>uint</td>\n") 502 if 'timeLastMeasured_sec' in params: 503 out.write(" <td>"+str(params['timeLastMeasured_sec'])+"</td>\n") 504 out.write(" <td>"+str(params['timeLastMeasured_sec'])+"</td>\n") 505 out.write("</tr>\n") 506 out.write("</table>\n")
507
508 -def printKml(params, out=sys.stdout):
509 '''KML (Keyhole Markup Language) for Google Earth, but without the header/footer''' 510 out.write("\ <Placemark>\n") 511 out.write("\t <name>"+str(params['stationid'])+"</name>\n") 512 out.write("\t\t<description>\n") 513 import StringIO 514 buf = StringIO.StringIO() 515 printHtml(params,buf) 516 import cgi 517 out.write(cgi.escape(buf.getvalue())) 518 out.write("\t\t</description>\n") 519 out.write("\t\t<styleUrl>#m_ylw-pushpin_copy0</styleUrl>\n") 520 out.write("\t\t<Point>\n") 521 out.write("\t\t\t<coordinates>") 522 out.write(str(params['stationloc_longitude'])) 523 out.write(',') 524 out.write(str(params['stationloc_latitude'])) 525 out.write(",0</coordinates>\n") 526 out.write("\t\t</Point>\n") 527 out.write("\t</Placemark>\n")
528
529 -def printFields(params, out=sys.stdout, format='std'):
530 '''Print a timeLastMeasured_sec message to stdout. 531 532 Fields in params: 533 - dac(uint): Designated Area Code (field automatically set to "366") 534 - fid(uint): Functional Identifier (field automatically set to "1") 535 - efid(uint): extended functional identifier (field automatically set to "1") 536 - timetag_month(uint): Time the measurement represents month 1..12 537 - timetag_day(uint): Time the measurement represents day of the month 1..31 538 - timetag_hour(uint): Time the measurement represents UTC hours 0..23 539 - timetag_min(uint): Time the measurement represents minutes 540 - timetag_sec(uint): Time the measurement represents seconds 541 - stationid(aisstr6): Character identifier of the station. Usually a number. 542 - stationloc_longitude(decimal): Location of the sensor taking the water level measurement or position of prediction East West location 543 - stationloc_latitude(decimal): Location of the sensor taking the water level measurement or position of prediction North South location 544 - waterlevel(int): Water level in centimeters 545 - datum(uint): What reference datum applies to the value 546 - sigma(float): Standard deviation of 1 second samples used to compute the water level height 547 - o(uint): Count of number of samples that fall outside a 3-sigma band about the mean 548 - levelinferred(bool): indicates that the water level value has been inferred 549 - flat_tolerance_exceeded(bool): flat tolerance limit was exceeded. Need better descr 550 - rate_tolerance_exceeded(bool): rate of change tolerance limit was exceeded 551 - temp_tolerance_exceeded(bool): temperature difference tolerance limit was exceeded 552 - expected_height_exceeded(bool): either the maximum or minimum expected water level height limit was exceeded 553 - link_down(bool): Unable to communicate with the tide system. All data invalid 554 - timeLastMeasured_month(uint): Time since last measured value was available month 1..12 555 - timeLastMeasured_day(uint): Time since last measured value was available day of the month 1..31 556 - timeLastMeasured_hour(uint): Time since last measured value was available UTC hours 0..23 557 - timeLastMeasured_min(uint): Time since last measured value was available minutes 558 - timeLastMeasured_sec(uint): Time since last measured value was available seconds 559 @param params: Dictionary of field names/values. 560 @param out: File like object to write to 561 @rtype: stdout 562 @return: text to out 563 ''' 564 565 if 'std'==format: 566 out.write("timeLastMeasured_sec:\n") 567 if 'dac' in params: out.write(" dac: "+str(params['dac'])+"\n") 568 if 'fid' in params: out.write(" fid: "+str(params['fid'])+"\n") 569 if 'efid' in params: out.write(" efid: "+str(params['efid'])+"\n") 570 if 'timetag_month' in params: out.write(" timetag_month: "+str(params['timetag_month'])+"\n") 571 if 'timetag_day' in params: out.write(" timetag_day: "+str(params['timetag_day'])+"\n") 572 if 'timetag_hour' in params: out.write(" timetag_hour: "+str(params['timetag_hour'])+"\n") 573 if 'timetag_min' in params: out.write(" timetag_min: "+str(params['timetag_min'])+"\n") 574 if 'timetag_sec' in params: out.write(" timetag_sec: "+str(params['timetag_sec'])+"\n") 575 if 'stationid' in params: out.write(" stationid: "+str(params['stationid'])+"\n") 576 if 'stationloc_longitude' in params: out.write(" stationloc_longitude: "+str(params['stationloc_longitude'])+"\n") 577 if 'stationloc_latitude' in params: out.write(" stationloc_latitude: "+str(params['stationloc_latitude'])+"\n") 578 if 'waterlevel' in params: out.write(" waterlevel: "+str(params['waterlevel'])+"\n") 579 if 'datum' in params: out.write(" datum: "+str(params['datum'])+"\n") 580 if 'sigma' in params: out.write(" sigma: "+str(params['sigma'])+"\n") 581 if 'o' in params: out.write(" o: "+str(params['o'])+"\n") 582 if 'levelinferred' in params: out.write(" levelinferred: "+str(params['levelinferred'])+"\n") 583 if 'flat_tolerance_exceeded' in params: out.write(" flat_tolerance_exceeded: "+str(params['flat_tolerance_exceeded'])+"\n") 584 if 'rate_tolerance_exceeded' in params: out.write(" rate_tolerance_exceeded: "+str(params['rate_tolerance_exceeded'])+"\n") 585 if 'temp_tolerance_exceeded' in params: out.write(" temp_tolerance_exceeded: "+str(params['temp_tolerance_exceeded'])+"\n") 586 if 'expected_height_exceeded' in params: out.write(" expected_height_exceeded: "+str(params['expected_height_exceeded'])+"\n") 587 if 'link_down' in params: out.write(" link_down: "+str(params['link_down'])+"\n") 588 if 'timeLastMeasured_month' in params: out.write(" timeLastMeasured_month: "+str(params['timeLastMeasured_month'])+"\n") 589 if 'timeLastMeasured_day' in params: out.write(" timeLastMeasured_day: "+str(params['timeLastMeasured_day'])+"\n") 590 if 'timeLastMeasured_hour' in params: out.write(" timeLastMeasured_hour: "+str(params['timeLastMeasured_hour'])+"\n") 591 if 'timeLastMeasured_min' in params: out.write(" timeLastMeasured_min: "+str(params['timeLastMeasured_min'])+"\n") 592 if 'timeLastMeasured_sec' in params: out.write(" timeLastMeasured_sec: "+str(params['timeLastMeasured_sec'])+"\n") 593 elif 'html'==format: 594 printHtml(params,out) 595 elif 'kml'==format: 596 printKml(params,out) 597 elif 'kml-full'==format: 598 out.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n") 599 out.write("<kml xmlns=\"http://earth.google.com/kml/2.1\">\n") 600 out.write("<Document>\n") 601 out.write(" <name>Position</name>\n") 602 printKml(params,out) 603 out.write("</Document>\n") 604 out.write("</kml>\n") 605 else: 606 print "ERROR: unknown format:",format 607 assert False 608 609 return # Nothing to return
610 611 datumEncodeLut = { 612 'MLLW':'0', 613 'IGLD-85':'1', 614 'WaterDepth':'2', 615 'STND':'3', 616 'MHW':'4', 617 'MLS':'5', 618 'NGVD':'6', 619 'NAVD':'7', 620 } #datumEncodeLut 621 622 datumDecodeLut = { 623 '0':'MLLW', 624 '1':'IGLD-85', 625 '2':'WaterDepth', 626 '3':'STND', 627 '4':'MHW', 628 '5':'MLS', 629 '6':'NGVD', 630 '7':'NAVD', 631 } # datumEncodeLut 632 633 634 635 ###################################################################### 636 # UNIT TESTING 637 ###################################################################### 638 import unittest
639 -def testParams():
640 '''Return a params file base on the testvalue tags. 641 @rtype: dict 642 @return: params based on testvalue tags 643 ''' 644 params = {} 645 params['dac'] = 366 646 params['fid'] = 1 647 params['efid'] = 1 648 params['timetag_month'] = 2 649 params['timetag_day'] = 28 650 params['timetag_hour'] = 23 651 params['timetag_min'] = 45 652 params['timetag_sec'] = 58 653 params['stationid'] = 'A234567' 654 params['stationloc_longitude'] = Decimal('-122.16328055555556') 655 params['stationloc_latitude'] = Decimal('37.424458333333334') 656 params['waterlevel'] = -97 657 params['datum'] = 0 658 params['sigma'] = -1.234 659 params['o'] = 240 660 params['levelinferred'] = False 661 params['flat_tolerance_exceeded'] = True 662 params['rate_tolerance_exceeded'] = False 663 params['temp_tolerance_exceeded'] = False 664 params['expected_height_exceeded'] = True 665 params['link_down'] = False 666 params['timeLastMeasured_month'] = 2 667 params['timeLastMeasured_day'] = 28 668 params['timeLastMeasured_hour'] = 23 669 params['timeLastMeasured_min'] = 45 670 params['timeLastMeasured_sec'] = 58 671 672 return params
673
674 -class Testwaterlevel(unittest.TestCase):
675 '''Use testvalue tag text from each type to build test case the waterlevel message'''
676 - def testEncodeDecode(self):
677 678 params = testParams() 679 bits = encode(params) 680 r = decode(bits) 681 682 # Check that each parameter came through ok. 683 self.failUnlessEqual(r['dac'],params['dac']) 684 self.failUnlessEqual(r['fid'],params['fid']) 685 self.failUnlessEqual(r['efid'],params['efid']) 686 self.failUnlessEqual(r['timetag_month'],params['timetag_month']) 687 self.failUnlessEqual(r['timetag_day'],params['timetag_day']) 688 self.failUnlessEqual(r['timetag_hour'],params['timetag_hour']) 689 self.failUnlessEqual(r['timetag_min'],params['timetag_min']) 690 self.failUnlessEqual(r['timetag_sec'],params['timetag_sec']) 691 self.failUnlessEqual(r['stationid'],params['stationid']) 692 self.failUnlessAlmostEqual(r['stationloc_longitude'],params['stationloc_longitude'],5) 693 self.failUnlessAlmostEqual(r['stationloc_latitude'],params['stationloc_latitude'],5) 694 self.failUnlessEqual(r['waterlevel'],params['waterlevel']) 695 self.failUnlessEqual(r['datum'],params['datum']) 696 self.failUnlessAlmostEqual(r['sigma'],params['sigma'],3) 697 self.failUnlessEqual(r['o'],params['o']) 698 self.failUnlessEqual(r['levelinferred'],params['levelinferred']) 699 self.failUnlessEqual(r['flat_tolerance_exceeded'],params['flat_tolerance_exceeded']) 700 self.failUnlessEqual(r['rate_tolerance_exceeded'],params['rate_tolerance_exceeded']) 701 self.failUnlessEqual(r['temp_tolerance_exceeded'],params['temp_tolerance_exceeded']) 702 self.failUnlessEqual(r['expected_height_exceeded'],params['expected_height_exceeded']) 703 self.failUnlessEqual(r['link_down'],params['link_down']) 704 self.failUnlessEqual(r['timeLastMeasured_month'],params['timeLastMeasured_month']) 705 self.failUnlessEqual(r['timeLastMeasured_day'],params['timeLastMeasured_day']) 706 self.failUnlessEqual(r['timeLastMeasured_hour'],params['timeLastMeasured_hour']) 707 self.failUnlessEqual(r['timeLastMeasured_min'],params['timeLastMeasured_min']) 708 self.failUnlessEqual(r['timeLastMeasured_sec'],params['timeLastMeasured_sec'])
709
710 -def addMsgOptions(parser):
711 parser.add_option('-d','--decode',dest='doDecode',default=False,action='store_true', 712 help='decode a "waterlevel" AIS message') 713 parser.add_option('-e','--encode',dest='doEncode',default=False,action='store_true', 714 help='encode a "waterlevel" AIS message') 715 parser.add_option('--timetag_month-field', dest='timetag_monthField',metavar='uint',type='int' 716 ,help='Field parameter value [default: %default]') 717 parser.add_option('--timetag_day-field', dest='timetag_dayField',metavar='uint',type='int' 718 ,help='Field parameter value [default: %default]') 719 parser.add_option('--timetag_hour-field', dest='timetag_hourField',metavar='uint',type='int' 720 ,help='Field parameter value [default: %default]') 721 parser.add_option('--timetag_min-field', dest='timetag_minField',metavar='uint',type='int' 722 ,help='Field parameter value [default: %default]') 723 parser.add_option('--timetag_sec-field', dest='timetag_secField',metavar='uint',type='int' 724 ,help='Field parameter value [default: %default]') 725 parser.add_option('--stationid-field', dest='stationidField',default='@@@@@@@',metavar='aisstr6',type='string' 726 ,help='Field parameter value [default: %default]') 727 parser.add_option('--stationloc_longitude-field', dest='stationloc_longitudeField',default=Decimal('181'),metavar='decimal',type='string' 728 ,help='Field parameter value [default: %default]') 729 parser.add_option('--stationloc_latitude-field', dest='stationloc_latitudeField',default=Decimal('91'),metavar='decimal',type='string' 730 ,help='Field parameter value [default: %default]') 731 parser.add_option('--waterlevel-field', dest='waterlevelField',default=-32768,metavar='int',type='int' 732 ,help='Field parameter value [default: %default]') 733 parser.add_option('--datum-field', dest='datumField',default=31,metavar='uint',type='int' 734 ,help='Field parameter value [default: %default]') 735 parser.add_option('--sigma-field', dest='sigmaField',metavar='float',type='float' 736 ,help='Field parameter value [default: %default]') 737 parser.add_option('--o-field', dest='oField',default=255,metavar='uint',type='int' 738 ,help='Field parameter value [default: %default]') 739 parser.add_option('--levelinferred-field', dest='levelinferredField',metavar='bool',type='int' 740 ,help='Field parameter value [default: %default]') 741 parser.add_option('--flat_tolerance_exceeded-field', dest='flat_tolerance_exceededField',metavar='bool',type='int' 742 ,help='Field parameter value [default: %default]') 743 parser.add_option('--rate_tolerance_exceeded-field', dest='rate_tolerance_exceededField',metavar='bool',type='int' 744 ,help='Field parameter value [default: %default]') 745 parser.add_option('--temp_tolerance_exceeded-field', dest='temp_tolerance_exceededField',metavar='bool',type='int' 746 ,help='Field parameter value [default: %default]') 747 parser.add_option('--expected_height_exceeded-field', dest='expected_height_exceededField',metavar='bool',type='int' 748 ,help='Field parameter value [default: %default]') 749 parser.add_option('--link_down-field', dest='link_downField',metavar='bool',type='int' 750 ,help='Field parameter value [default: %default]') 751 parser.add_option('--timeLastMeasured_month-field', dest='timeLastMeasured_monthField',metavar='uint',type='int' 752 ,help='Field parameter value [default: %default]') 753 parser.add_option('--timeLastMeasured_day-field', dest='timeLastMeasured_dayField',metavar='uint',type='int' 754 ,help='Field parameter value [default: %default]') 755 parser.add_option('--timeLastMeasured_hour-field', dest='timeLastMeasured_hourField',metavar='uint',type='int' 756 ,help='Field parameter value [default: %default]') 757 parser.add_option('--timeLastMeasured_min-field', dest='timeLastMeasured_minField',metavar='uint',type='int' 758 ,help='Field parameter value [default: %default]') 759 parser.add_option('--timeLastMeasured_sec-field', dest='timeLastMeasured_secField',metavar='uint',type='int' 760 ,help='Field parameter value [default: %default]')
761 762 ############################################################ 763 if __name__=='__main__': 764 765 from optparse import OptionParser 766 parser = OptionParser(usage="%prog [options]", 767 version="%prog "+__version__) 768 769 parser.add_option('--doc-test',dest='doctest',default=False,action='store_true', 770 help='run the documentation tests') 771 parser.add_option('--unit-test',dest='unittest',default=False,action='store_true', 772 help='run the unit tests') 773 parser.add_option('-v','--verbose',dest='verbose',default=False,action='store_true', 774 help='Make the test output verbose') 775 776 # FIX: remove nmea from binary messages. No way to build the whole packet? 777 # FIX: or build the surrounding msg 8 for a broadcast? 778 typeChoices = ('binary','nmeapayload','nmea') # FIX: what about a USCG type message? 779 parser.add_option('-t','--type',choices=typeChoices,type='choice',dest='ioType' 780 ,default='nmeapayload' 781 ,help='What kind of string to expect ('+', '.join(typeChoices)+') [default: %default]') 782 783 784 outputChoices = ('std','html','xml' , 'kml','kml-full') 785 parser.add_option('-T','--output-type',choices=outputChoices,type='choice',dest='outputType' 786 ,default='std' 787 ,help='What kind of string to output ('+', '.join(outputChoices)+') [default: %default]') 788 789 parser.add_option('-o','--output',dest='outputFileName',default=None, 790 help='Name of the python file to write [default: stdout]') 791 792 addMsgOptions(parser) 793 794 (options,args) = parser.parse_args() 795 success=True 796 797 if options.doctest: 798 import os; print os.path.basename(sys.argv[0]), 'doctests ...', 799 sys.argv= [sys.argv[0]] 800 if options.verbose: sys.argv.append('-v') 801 import doctest 802 numfail,numtests=doctest.testmod() 803 if numfail==0: print 'ok' 804 else: 805 print 'FAILED' 806 success=False 807 808 if not success: sys.exit('Something Failed') 809 del success # Hide success from epydoc 810 811 if options.unittest: 812 sys.argv = [sys.argv[0]] 813 if options.verbose: sys.argv.append('-v') 814 unittest.main() 815 816 outfile = sys.stdout 817 if None!=options.outputFileName: 818 outfile = file(options.outputFileName,'w') 819 820 821 if options.doEncode: 822 # First make sure all non required options are specified 823 if None==options.timetag_monthField: parser.error("missing value for timetag_monthField") 824 if None==options.timetag_dayField: parser.error("missing value for timetag_dayField") 825 if None==options.timetag_hourField: parser.error("missing value for timetag_hourField") 826 if None==options.timetag_minField: parser.error("missing value for timetag_minField") 827 if None==options.timetag_secField: parser.error("missing value for timetag_secField") 828 if None==options.stationidField: parser.error("missing value for stationidField") 829 if None==options.stationloc_longitudeField: parser.error("missing value for stationloc_longitudeField") 830 if None==options.stationloc_latitudeField: parser.error("missing value for stationloc_latitudeField") 831 if None==options.waterlevelField: parser.error("missing value for waterlevelField") 832 if None==options.datumField: parser.error("missing value for datumField") 833 if None==options.sigmaField: parser.error("missing value for sigmaField") 834 if None==options.oField: parser.error("missing value for oField") 835 if None==options.levelinferredField: parser.error("missing value for levelinferredField") 836 if None==options.flat_tolerance_exceededField: parser.error("missing value for flat_tolerance_exceededField") 837 if None==options.rate_tolerance_exceededField: parser.error("missing value for rate_tolerance_exceededField") 838 if None==options.temp_tolerance_exceededField: parser.error("missing value for temp_tolerance_exceededField") 839 if None==options.expected_height_exceededField: parser.error("missing value for expected_height_exceededField") 840 if None==options.link_downField: parser.error("missing value for link_downField") 841 if None==options.timeLastMeasured_monthField: parser.error("missing value for timeLastMeasured_monthField") 842 if None==options.timeLastMeasured_dayField: parser.error("missing value for timeLastMeasured_dayField") 843 if None==options.timeLastMeasured_hourField: parser.error("missing value for timeLastMeasured_hourField") 844 if None==options.timeLastMeasured_minField: parser.error("missing value for timeLastMeasured_minField") 845 if None==options.timeLastMeasured_secField: parser.error("missing value for timeLastMeasured_secField") 846 msgDict={ 847 'dac': '366', 848 'fid': '1', 849 'efid': '1', 850 'timetag_month': options.timetag_monthField, 851 'timetag_day': options.timetag_dayField, 852 'timetag_hour': options.timetag_hourField, 853 'timetag_min': options.timetag_minField, 854 'timetag_sec': options.timetag_secField, 855 'stationid': options.stationidField, 856 'stationloc_longitude': options.stationloc_longitudeField, 857 'stationloc_latitude': options.stationloc_latitudeField, 858 'waterlevel': options.waterlevelField, 859 'datum': options.datumField, 860 'sigma': options.sigmaField, 861 'o': options.oField, 862 'levelinferred': options.levelinferredField, 863 'flat_tolerance_exceeded': options.flat_tolerance_exceededField, 864 'rate_tolerance_exceeded': options.rate_tolerance_exceededField, 865 'temp_tolerance_exceeded': options.temp_tolerance_exceededField, 866 'expected_height_exceeded': options.expected_height_exceededField, 867 'link_down': options.link_downField, 868 'timeLastMeasured_month': options.timeLastMeasured_monthField, 869 'timeLastMeasured_day': options.timeLastMeasured_dayField, 870 'timeLastMeasured_hour': options.timeLastMeasured_hourField, 871 'timeLastMeasured_min': options.timeLastMeasured_minField, 872 'timeLastMeasured_sec': options.timeLastMeasured_secField, 873 } 874 875 bits = encode(msgDict) 876 if 'binary'==options.ioType: print str(bits) 877 elif 'nmeapayload'==options.ioType: 878 # FIX: figure out if this might be necessary at compile time 879 print "bitLen",len(bits) 880 bitLen=len(bits) 881 if bitLen%6!=0: 882 bits = bits + BitVector(size=(6 - (bitLen%6))) # Pad out to multiple of 6 883 print "result:",binary.bitvectoais6(bits)[0] 884 885 886 # FIX: Do not emit this option for the binary message payloads. Does not make sense. 887 elif 'nmea'==options.ioType: sys.exit("FIX: need to implement this capability") 888 else: sys.exit('ERROR: unknown ioType. Help!') 889 890 if options.doDecode: 891 for msg in args: 892 bv = None 893 if 'binary' == options.ioType: bv = BitVector(bitstring=msg) 894 elif 'nmeapayload'== options.ioType: bv = binary.ais6tobitvec(msg) 895 elif 'nmea' == options.ioType: bv = binary.ais6tobitvec(msg.split(',')[5]) 896 else: sys.exit('ERROR: unknown ioType. Help!') 897 898 printFields(decode(bv),out=outfile,format=options.outputType) 899