ddplot

一个gps小工具包

#!/usr/bin/env python
# $Id: ddPlot 513 2007-05-03 21:41:15Z tconn $
# A routine to plot the output of ddGen.


import sys, string, time, datetime, numpy, matplotlib, pylab

def main():

    from optparse import OptionParser
    
    parser = OptionParser()
        
    usageString = "ddPlot [option]\n\n A routine to plot the output of ddGen.\n\n All double differences will be plotted by default, or\n you may specify plotting criteria using the command\n line options."
    
    parser =OptionParser(usage=usageString)
    
    parser.add_option("-d", "--debug", default=0, dest="debugLevel", action="count",
                      help="Increase the debugLevel.")

    parser.add_option("-l", "--legend", dest="legend", action="count",
                      help="Include a legend.")
                      
    parser.add_option("-a","--averages", action="count", dest="plotAverages",
                      help="Plot the averages using the same plotting criteria. Use twice and only averages will be plotted.")
                      
    parser.add_option("-u","--no-unhlthy", dest="noUnhealthy",action="count",
                      help="Do not plot data from unhealthy SVs.")
    
    parser.add_option("-r", "--range", dest="range", action="count",
                      help="Plot range double difference values.")
                      
    parser.add_option("-D", "--doppler", dest="doppler", action="count",
                      help="Plot Doppler double difference values.") 
    
    parser.add_option("-p", "--phase", dest="phase", action="count",
                      help="Plot phase double difference values.")
                      
    parser.add_option("-1", "--L1", dest="L1", action="count",
                      help="Plot data from L1 freq band.")
                      
    parser.add_option("-2", "--L2", dest="L2", action="count",
                      help="Plot data from L2 freq band.")
                      
    parser.add_option("-i", help="Input data file, defaults to stdin.", \
                      dest="inputFile", type="string", action="store")

    parser.add_option("-t", help="Specify a title for the plot. "+\
                      "Defaults to the name of the input stream.", \
                      dest="title", type="string", action="store")         
                      
    parser.add_option("-f", dest="saveFig", action="store", type="string",\
                      help="Save the figure to the indicated file")

    parser.add_option("-y", dest="yRange", action="store", type="float",\
                      help="Fix the y range on the ords to be +- this value.")
                      
    parser.add_option("-s", dest="tStart", action="store",\
                      help="Start time. Format as \"YYYY DOY HH:MM:SS.S\" (Note\
                      the trailing decimal place).") 

    parser.add_option("-e", dest="tEnd", action="store",\
                      help="End time. Format as \"YYYY DOY HH:MM:SS.S\" (Note\
                      the trailing decimal place).") 
    
    (options, args) = parser.parse_args()

    if (len(args) and options.inputFile == None):
        options.inputFile = args[0]
    
    inputFile = sys.stdin
    if (options.inputFile):
        inputFile = open(options.inputFile)

    if (options.title == None):
        options.title = inputFile.name
    
    plotAvg = False
    if (options.plotAverages):
        plotAvg = True
        
    plotUnhealthy = True
    if (options.noUnhealthy):
        plotUnhealthy = False
    
    plotRange = True
    plotPhase = True
    plotDoppl = True
    plotL1    = True
    plotL2    = True
    
    if (options.range or options.doppler or options.phase): 
         if (not options.range):
             plotRange = False
         if (not options.phase):
             plotPhase = False
         if (not options.doppler):
             plotDoppl = False
    if (options.L1 or options.L2):
        if (not options.L1):
            plotL1 = False
        if (not options.L2):
            plotL2 = False

    if (options.debugLevel):
        print "Processing: %s" % inputFile.name
        print "Debug level: %d" % options.debugLevel
        print "Title: %s" % options.title
        if options.yRange:
            print "Fixing y axis to +/- %4.4f meters" % options.yRange
        if plotRange:
            print "Plotting range double differences"
        else:
            print "Excluding range double differences from plot"
        if plotPhase:
            print "Plotting phase double differences"
        else:
            print "Excluding phase double differences from plot"
        if plotDoppl:
            print "Plotting doppler double differences"
        else:
            print "Excluding doppler double differences from plot"
        if plotL1:
            print "Plotting double differences from data collected on L1"
        else:
            print "Excluding double differences from data collected on L1"
        if plotL2:
            print "Plotting double differences from data collected on L2"
        else:
            print "Excluding double differences from data collected on L2"
        if plotAvg:
            print "Plotting double differnce averages"
        else:
            print "Not plotting averages"

    # read in data.
    # Not using SV or elevation data yet, but we may want to do 
    # something cool with it later
    
    dataListL1 = ([],[],[],[],[],[],[],[],[])  # time, C/A range dd, P/Y range, phase dd, doppler dd, PRN1, el1, PRN2, el2
    dataListL2 = ([],[],[],[],[],[],[],[])     # time, range dd, phase dd, doppler dd, PRN1, el1, PRN2, el2
    avergsList = ([],[],[],[],[],[],[],[])     # time, C/A rng avg, L1 P/Y rng avg, L1 phs dd avg, L1 dopp dd avg...
                                               # ...L2 rng dd avg, L2 phs dd avg, L2 dopp dd avg
    #cycleSlips =  # not quite sure how to work these in yet

    for line in inputFile:
        line = line.strip()
        if options.debugLevel>1:
            print line
        if len(line)==0: continue

        if line[0] == "#": continue
        if line[0] == '>':
            if line[1] == "c":
                continue # we'll do something nifty with these later
            if (line[1]=="a" and plotAvg):
                words=line.split()
                t = parse_time(words[1:4])
                ordType = "%s %s %s"%(words[4], words[5], words[6])
                mean = float(words[8])
                if ordType[0:2] == "L1":
                    if ordType[3:6] == "C/A":
                        avergsList[0].append(t)     # time
                        avergsList[1].append(mean)  # C/A range dd mean
                    elif ordType[7:14] == "range":  
                        avergsList[2].append(mean)  # L1 P/Y/W range dd mean
                    elif ordType[7:14] == "phase":
                        avergsList[3].append(mean)  # L1 P/Y/W phase dd mean
                    elif ordType[7:14] == "doppl":
                        avergsList[4].append(mean)  # L1 P/Y/W Doppler dd mean
                    else:
                        if (options.debugLevel):
                            print "Didn't understand this line:"
                            print line
                        
                elif ordType[0:2] == "L2":
                    if ordType[7:14] == "range":
                        avergsList[5].append(mean)  # L1 P/Y/W range dd mean
                    elif ordType[7:14] == "phase":
                        avergsList[6].append(mean)  # L1 P/Y/W phase dd mean
                    elif ordType[7:14] == "doppl":
                        avergsList[7].append(mean)  # L1 P/Y/W Doppler dd mean
                    else:
                        if (options.debugLevel):
                            print "Didn't understand this line:"
                            print line           
        else:       
            words=line.split()
            t = parse_time(words[0:3])
            ordType = "%s %s %s"%(words[3], words[4], words[5])
            if (words[11] != "00" and (not plotUnhealthy)):
                if options.debugLevel:
                    print "Not plotting data from unhealthy SV(s):"
                    print line
                continue

            # parse the line
            sv1 = int(words[6])
            sv2 = int(words[7])
            elev1 = float(words[8])
            elev2 = float(words[9])