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antenna.py
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antenna.py
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#!/usr/bin/env python
from __future__ import division, print_function, absolute_import
import numpy as np
import string as s
import re
import datetime as dt
import gpsTime as gt
class Antenna:
def __init__(self, name='ASH701945C_M NONE', source='igs08.atx') :
# check the antenna name has a radome defined, and is 20 characters long
if len(name)> 20:
print('Antenna name',name,'is:', len(name),'characters long')
print('The antenna name/type should only be 20 characters long')
self.name = name
if len(name) == 20:
self.dome = name[-4:]
# set blanks to NONE
if self.dome == ' ':
self.dome = 'NONE'
self.model = name[0:15]
#print("MODEL:",self.model,":")
# Keep a record of where this calibration result came from
self.source = source
#def diff(self, other):
# '''
# antenna.diff(other)
# Calculate the difference in absolute antenna PCVs from another antenna
# '''
# print(self.name - other.name)
# return diff
# source record the source of the antenna calibration igs081577.atx
# Set / Get functions
def dazi(self, dazi):
'''
dazi change in azimuth increment (float)
ant.dazi(5.0)
inc = ant.dazi()
'''
#if(dazi):
self.dazi = dazi
return self.dazi
def startZen(self, zen):
self.startZen = zen
def endZen(self, zen):
self.endZen = zen
def incZenith(self, inc):
self.incZenith = inc
def dzen(self, dzen):
'''
dzen change in zenith increment (float)
ant.dzen([0,90,5.0])
inc = ant.dazi()
'''
self.startZen(dzen[0])
self.endZen(dzen[1])
self.incZenith(dzen[2])
def dome(self,dome):
self.dome = dome
# number of frequencies that have a calibration
# value
def nFreq(self,nFreq):
self.nFreq = nFreq
# set up a list of frequencies names to be filled in later
self.freqItr = 0
self.frequencies = []
def validFrom(self, validFrom):
self.validFrom = validFrom
def validTo(self, validTo):
self.validTo = validTo
def noAzi(self, noazi):
self.noazi = np.array(noazi)
def startFreq(self,cFreq):
# convert G 1 to G01, etc..
if cFreq.size == 2:
tmp = "{}{:02d}".format(cFreq[0],int(cFreq[1]))
self.frequencies.append(tmp)
else:
self.frequencies.append(cFreq[0])
# TO do def parseNGS(ngsFile):
def parseANTEX(atxFile):
'''
parseANTEX(antexFile)
Read an ANTEX format file and return an array of antennas
'''
#=====================================================
typeRGX = re.compile('TYPE\s\/\sSERIAL\sNO')
startOfAntennaRGX = re.compile('START OF ANTENNA')
endOfAntennaRGX = re.compile('END OF ANTENNA')
daziRGX = re.compile('DAZI')
dzenRGX = re.compile('ZEN1\s\/\sZEN2\s\/\sDZEN')
validFromRGX = re.compile('VALID FROM')
validToRGX = re.compile('VALID UNTIL')
sinexCodeRGX = re.compile('SINEX CODE')
pcoRGX = re.compile('NORTH / EAST / UP')
numFreqRGX = re.compile('# OF FREQUENCIES')
startOfFrequencyRGX = re.compile('START OF FREQUENCY')
endOfFrequencyRGX = re.compile('END OF FREQUENCY')
noaziRGX = re.compile('NOAZI')
typeRGX = re.compile('TYPE\s\/\sSERIAL\sNO')
#=====================================================
freqFlag = 0
numAntennas = 0
antennas = []
with open(atxFile) as f:
for line in f:
if typeRGX.search(line):
antenna['name'] = line[0:15]+' '+line[16:20]#+serial number
antenna['type'] = line[0:15]
antenna['dome'] = line[16:20]
antenna['serialNum'] = line[20:40]
# only applied for satellite PCV
# scode "sNNN" s = sytem, NNN = SVN number
antenna['scode'] = line[40:50]
# COSPAR ID "YYYY-XXXA"
antenna['cospar'] = line[50:60]
ant = Antenna(line[0:15]+' '+line[16:20], atxFile)
# might need to put in an exception for satellite antennas
# if dome is blank set to none
if antenna['dome'] == ' ':
antenna['dome'] = 'NONE'
# define some defaults
antenna['frequency'] = []
antenna['data'] = np.zeros(0)
elif startOfAntennaRGX.search(line):
antenna = {}
elif daziRGX.search(line):
dazi = np.array(s.split(line))[0]
antenna['dazi'] = dazi.astype(np.float)
ant.dazi( dazi.astype(np.float) )
#print('Calling dazi from class',ant.dazi)
elif dzenRGX.search(line):
dzen = np.array(s.split(line))[0:-5]
antenna['dzen'] = dzen.astype(np.float)
ant.dzen(dzen.astype(np.float))
elif numFreqRGX.search(line):
numFreq = np.array(s.split(line))[0]
antenna['numFreq'] = numFreq.astype(np.int)
ant.nFreq(numFreq.astype(np.int))
elif validFromRGX.search(line):
# array should have size 6, YYYY MM DD HH MM SS.SSSS
# maybe less if it has been entered like 2004 01 01, etc...
validFrom = np.array(s.split(line)[0:-2])
antenna['validFrom'] = validFrom.astype(np.float)
antenna['validTo'] = []
ant.validFrom(validFrom.astype(np.float))
elif validToRGX.search(line):
validTo = np.array(s.split(line)[0:-2])
antenna['validTo'] = validTo.astype(np.float)
ant.validTo(validTo.astype(np.float))
elif startOfFrequencyRGX.search(line):
cFreq = np.array(s.split(line))[0:-3]
# convert G 1 to G01, etc..
if cFreq.size == 2:
tmp = "{}{:02d}".format(cFreq[0],int(cFreq[1]))
antenna['frequency'].append(tmp)
else:
antenna['frequency'].append(cFreq[0])
freqFlag = 1
ant.startFreq(cFreq)
elif pcoRGX.search(line):
pco = np.array(s.split(line))[0:-5]
name = 'PCO_'+antenna['frequency'][-1]
antenna[name] = pco.astype(np.float)
if antenna['data'].size < 1:
if antenna['dazi'] < 0.0001 :
nAZI = 1
else:
nAZI = int(360. / antenna['dazi']) + 1
nZEN = int((antenna['dzen'][1] - antenna['dzen'][0])/antenna['dzen'][2])+1
antenna['data'] = np.zeros((antenna['numFreq'],nAZI,nZEN))
elif noaziRGX.search(line):
noazi = np.array(s.split(line)[1:])
antenna['noazi'] = noazi.astype(np.float)
ant.noAzi(noazi.astype(np.float))
elif endOfFrequencyRGX.search(line):
freqFlag = 0
cFreq = ''
# End of Antenna Flag
elif endOfAntennaRGX.search(line):
antennas.append(antenna)
numAntennas += 1
freqFlag = 0
elif freqFlag :
tmp = np.array(s.split(line)[1:],dtype=float)
itr = 0
f = np.size(antenna['frequency']) - 1
for v in tmp:
antenna['data'][f][freqFlag-1][itr] = v
itr += 1
freqFlag += 1
return antennas
#============================
def parseGEOPP(geoppFile):
'''
parseGEOPP(antmod.are)
-parse the geopp .are file format
-parse the geopp .arp file format
-parse the geopp .ant file
ane:
are: is an elvation dependent only antenna calibration result, where the
PCO has been pushed into the PCVs.
ant:
arp:
An example file is in t/....
'''
#=====================================================
# Set up some regexs to parse the data
#=====================================================
typeRGX = re.compile('^TYPE=')
serialRGX = re.compile('SERIAL NUMBER=')
calibrationTypeRGX = re.compile('CALIBRATION TYPE=')
calibrationDateRGX = re.compile('CALIBRATION DATE=')
numAntennasRGX = re.compile('NO OF ANTENNAS=')
numCalibrationRGX = re.compile('NO OF CALIBRATIONS=')
gnssTypeRGX = re.compile('GNSS TYPE=')
contentRGX = re.compile('CONTENT TYPE=')
pcvTypeRGX = re.compile('PCV TYPE=')
numFreqRGX = re.compile('NO OF FREQUENCIES=')
offsetL1RGX = re.compile('OFFSETS L1=')
offsetL2RGX = re.compile('OFFSETS L2=')
deleRGX = re.compile('ELEVATION INCREMENT=')
daziRGX = re.compile('AZIMUTH INCREMENT=')
varL1RGX = re.compile('VARIATIONS L1=')
varL2RGX = re.compile('VARIATIONS L2=')
#=====================================================
L1flag = 0
L2flag = 0
ObsCtr = 0
antenna = {}
with open(geoppFile) as f:
for line in f:
line = line.rstrip()
if typeRGX.search(line) :
antenna['type'] = line[5:21]
antenna['dome'] = line[21:25]
if antenna['dome'] == ' ':
antenna['dome'] = 'NONE'
antenna['name'] = antenna['type'] + antenna['dome']
elif serialRGX.search(line) and len(line) > 14 :
antenna['serialnum'] = line[14:]
antenna['name'] = antenna['name'] + ' ' + antenna['serialnum']
elif calibrationTypeRGX.search(line) and len(line) > 17 :
antenna['calType'] = line[17:]
elif calibrationDateRGX.search(line) and len(line) > 17 :
antenna['calDate'] = line[17:]
elif numAntennasRGX.search(line) and len(line) > 15 :
antenna['numAntennas'] = int(line[15:])
elif numCalibrationRGX.search(line) and len(line) > 19 :
antenna['numCalibrations'] = int(line[19:])
elif gnssTypeRGX.search(line) and len(line) > 10 :
antenna['gnssType'] = line[10:]
elif contentRGX.search(line) and len(line) > 13 :
antenna['content'] = line[13:]
elif pcvTypeRGX.search(line) and len(line) > 9:
antenna['pcvType'] = line[9:]
elif numFreqRGX.search(line) and len(line) > 18 :
antenna['numFreq'] = int(line[18:])
elif offsetL1RGX.search(line) and len(line) > 11 :
antenna['offsetL1'] = line[11:]
elif offsetL2RGX.search(line) and len(line) > 11 :
antenna['offsetL2'] = line[11:]
elif deleRGX.search(line) and len(line) > 20 :
antenna['dele'] = float(line[20:])
elif daziRGX.search(line) and len(line) > 18 :
antenna['dazi'] = float(line[18:])
elif varL1RGX.search(line) :
L1flag = 1
ObsCtr = 0
elif varL2RGX.search(line) :
L2flag = 1
ObsCtr = 0
#print("started the L2 obs")
elif L1flag == 1:
tmp = np.array(s.split(line))
#check that all of the data has been read in before reseting the flag
if antenna['dazi'] < 0.0001 :
antenna['L1PCV'] = tmp.astype(np.float)
L1flag = 0
ObsCtr = 0
else :
if ObsCtr == 0:
rows = int(360./antenna['dazi']) + 1
cols = int(90./antenna['dele']) + 1
antenna['L1PCV'] = np.zeros((rows,cols))
antenna['L1PCV'][ObsCtr,:] = tmp.astype(np.float)
ObsCtr += 1
if ObsCtr == (int(360./antenna['dazi']) + 1):
L1flag = 0
ObsCtr = 0
elif L2flag == 1:
tmp = np.array(s.split(line))
if antenna['dazi'] < 0.0001 :
antenna['L2PCV'] = tmp.astype(np.float)
L2flag = 0
ObsCtr = 0
else :
if ObsCtr == 0:
rows = int(360./antenna['dazi']) + 1
cols = int(90./antenna['dele']) + 1
antenna['L2PCV'] = np.zeros((rows,cols))
antenna['L2PCV'][ObsCtr,:] = tmp.astype(np.float)
ObsCtr += 1
if ObsCtr == (int(360./antenna['dazi']) + 1):
L2flag = 0
ObsCtr = 0
#L2flag = 0
return antenna
#=====================================
def antennaType(antennaType,antennas):
'''
antenna = antennaType(antennaType,antennas)
'''
found = []
for antenna in antennas:
if antenna['name'] == antennaType:
found.append(antenna)
# if only one antenna is found return this one
if np.size(found) == 1:
return found[0]
elif np.size(found) > 1:
print("WARNING found more the one antenne of type:",antennaType)
print("returning first one of",np.size(found))
return(found[0])
# try another serach with the radome set to NONE
antennaTypeNONE = antennaType[0:16]+'NONE'
for antenna in antennas:
if antenna['name'] == antennaTypeNONE:
return antenna
print('Could not find <'+antennaType+'>')
return -1
def antennaTypeSerial(antennaType,antennaSerial,antennas):
'''
antenna = antennaType(antennaType,antennaSerial,antennas)
'''
for antenna in antennas:
if antenna['name'].rstrip() == antennaType.rstrip() and antenna['serialNum'].rstrip() == antennaSerial.rstrip():
return antenna
print('Could not find <'+antennaType+'><'+antennaSerial+'>')
return -1
def antennaTypeScode(antennaType,SatCode,antennas):
'''
antenna = antennaTypeSatCode(antennaType,SatCode,antennas)
'''
for antenna in antennas:
if antenna['name'].rstrip() == antennaType.rstrip() and antenna['scode'].rstrip() == SatCode.rstrip():
return antenna
print('Could not find <'+antennaType+'><'+SatCode+'>')
return -1
def antennaScode(SatCode,antennas):
'''
[antenna] = antennaTypeSatCode(SatCode,antennas)
'''
found = []
for antenna in antennas:
if antenna['scode'].rstrip() == SatCode.rstrip():
found.append(antenna)
# if only one antenna is found return this one
if np.size(found) == 1:
return found
elif np.size(found) > 1:
#print("WARNING found more the one antenne of type:",antennaType)
#print("returning all of them",np.size(found))
return found
print('Could not find <'+SatCode+'>')
return -1
#def antennaValid(antenna,dto):
# """
# bool = antennaValid(antenna,dto)
#
# Check to see if an antenna is valid at a particular epoch
#
# """
# vfrom = dt.datetime(int(antenna['validFrom'][0]),int(antenna['validFrom'][1]),int(antenna['validFrom'][2]))
# if dto > vfrom:
# #print("dto > vfrom:",dto,vfrom,antenna['scode'])
# if np.size(antenna['validTo']) < 1 or antenna['validTo'] == [] :
# return True
# vto = dt.datetime(int(antenna['validTo'][0]),int(antenna['validTo'][1]),int(antenna['validTo'][2]))
# if dto < vto:
# return True
# print("Rejecting:",antenna['validFrom'],antenna['validTo'],dto,antenna['scode'])
# return False
def antennaValid(antenna,dts,dte):
"""
bool = antennaValid(antenna,dts,dte)
Check to see if an antenna is valid at a particular epoch
"""
vfrom = dt.datetime(int(antenna['validFrom'][0]),int(antenna['validFrom'][1]),int(antenna['validFrom'][2]))
if dte > vfrom:
#print("dto > vfrom:",dto,vfrom,antenna['scode'])
if np.size(antenna['validTo']) < 1 or antenna['validTo'] == [] :
return True
vto = dt.datetime(int(antenna['validTo'][0]),int(antenna['validTo'][1]),int(antenna['validTo'][2]))
if dts < vto:
return True
#print("Rejecting:",antenna['validFrom'],antenna['validTo'],dto,antenna['scode'])
return False
def satSearch(antennas,dts,dte):
GPSSatsRGX = re.compile('G\d\d')
found = []
for antenna in antennas:
# check we have a GPS satellite
if GPSSatsRGX.search(antenna['serialNum']) :
# check it the satellte was valid at the time
if antennaValid(antenna,dts,dte):
#print("Found:",antenna['scode'])
found.append(antenna['scode'].rstrip())
found = np.unique(found)
return found
def printAntexHeader(f):
print(' 1.4 M ANTEX VERSION / SYST',file=f)
print('A PCV TYPE / REFANT',file=f)
print(' END OF HEADER',file=f)
return 1
def printSatelliteModel(antenna,f):
# with open("satmod.dat","a") as f:
print(" START OF ANTENNA",file=f)
print("{:<20s}{:<20s}{:<10s}{:<10s}TYPE / SERIAL NO".format(antenna['type'],antenna['serialNum'],antenna['scode'],antenna['cospar']),file=f)
print("EMPIRICAL MODEL ANU 0 25-MAR-11 METH / BY / # / DATE",file=f)
print(" 0.0 DAZI",file=f)
print(" 0.0 17.0 1.0 ZEN1 / ZEN2 / DZEN",file=f)
print(" 2 # OF FREQUENCIES",file=f)
print(" {:>04d} {:>02d} {:>02d} {:>02d} {:>02d} {:>9.7f} VALID FROM".format(int(antenna['validFrom'][0]),int(antenna['validFrom'][1]),int(antenna['validFrom'][2]),int(antenna['validFrom'][3]),int(antenna['validFrom'][4]),float(antenna['validFrom'][5]) ),file=f )
if np.size(antenna['validTo']) > 1:
print(" {:>04d} {:>02d} {:>02d} {:>02d} {:>02d} {:>9.7f} VALID UNTIL".format(int(antenna['validTo'][0]),int(antenna['validTo'][1]),int(antenna['validTo'][2]),int(antenna['validTo'][3]),int(antenna['validTo'][4]),float(antenna['validTo'][5]) ) ,file=f)
print("ANU08_1648 SINEX CODE",file=f)
#
# TODO: add in date time, user, computer and version of esm model was used in COMMENTS
#
print("Empirical model derived from MIT repro2 COMMENT",file=f)
print(" {:3s} START OF FREQUENCY".format('G01'),file=f)
pco_n = "{:0.2f}".format(antenna['PCO_G01'][0])
pco_n = "{:>10s}".format(pco_n)
pco_e = "{:0.2f}".format(antenna['PCO_G01'][1])
pco_e = "{:>10s}".format(pco_e)
pco_u = "{:0.2f}".format(antenna['PCO_G01'][2])
pco_u = "{:>10s}".format(pco_u)
print(pco_n+pco_e+pco_u+" NORTH / EAST / UP",file=f)
noazi = "{:>8s}".format('NOAZI')
for d in antenna['noazi']:
d = "{:>8.2f}".format(d)
noazi = noazi + d
print(noazi,file=f)
print(" {:3s} END OF FREQUENCY".format('G01'),file=f)
#================= G02 =======================
print(" {:3s} START OF FREQUENCY".format('G02'),file=f)
pco_n = "{:0.2f}".format(antenna['PCO_G02'][0])
pco_n = "{:>10s}".format(pco_n)
pco_e = "{:0.2f}".format(antenna['PCO_G02'][1])
pco_e = "{:>10s}".format(pco_e)
pco_u = "{:0.2f}".format(antenna['PCO_G02'][2])
pco_u = "{:>10s}".format(pco_u)
print(pco_n+pco_e+pco_u+" NORTH / EAST / UP",file=f)
noazi = "{:>8s}".format('NOAZI')
for d in antenna['noazi']:
d = "{:>8.2f}".format(d)
noazi = noazi + d
print(noazi,file=f)
print(" {:3s} END OF FREQUENCY".format('G02'),file=f)
print(" END OF ANTENNA",file=f)
return 1
def plt_layout(ax,fontzise):
"""
Set the axis and labels to the same fontsize
"""
for item in ([ax.title, ax.xaxis.label, ax.yaxis.label] +
ax.get_xticklabels() + ax.get_yticklabels()):
item.set_fontsize(fontsize)
return
#=====================================
if __name__ == "__main__":
import argparse
parser = argparse.ArgumentParser(prog='antenna',description='Parse ANTEX files')
parser.add_argument('-f', '--file', dest='file1', default='./t/antmod.dat')
parser.add_argument('-t', '--AntType',dest='AntType', default='ASH701945C_M NONE')
parser.add_argument('-s', '--AntSerial',dest='AntSerial')
parser.add_argument('--SCODE',dest='SatCode')
parser.add_argument('--search',dest='SatSearch',default=False,action='store_true',help='Look for all sats operational during a time frame')
parser.add_argument("--syyyy",dest="syyyy",type=int,default=1994,help="Start yyyy")
parser.add_argument("--sdoy","--sddd",dest="sdoy",type=int,default=0,help="Start doy")
parser.add_argument("--eyyyy",dest="eyyyy",type=int,default=2014,help="End yyyyy")
parser.add_argument("--edoy","--eddd",dest="edoy",type=int,default=365,help="End doy")
parser.add_argument('-p', '--plot',dest='plot', default=False, action='store_true')
parser.add_argument('--polar',dest='polar', default=False, action='store_true')
parser.add_argument('--elevation',dest='elevation', default=False, action='store_true')
parser.add_argument('--EM',dest='elevationMedian', default=False, action='store_true', help='Plot the Median PCV vs Elevation')
parser.add_argument('--LC',dest='LCdata', default=False, action='store_true',help='Calculate an LC observable')
args = parser.parse_args()
antennas = parseANTEX(args.file1)
if args.AntSerial:
antenna = antennaTypeSerial(args.AntType,args.AntSerial,antennas)
elif args.SatCode:
antenna = antennaTypeScode(args.AntType,args.SatCode,antennas)
# Only works for GPS...
elif args.SatSearch:
sdto = dt.datetime(int(args.syyyy),01,01) + dt.timedelta(days=int(args.sdoy))
edto = dt.datetime(int(args.eyyyy),01,01) + dt.timedelta(days=int(args.edoy))
svs = satSearch(antennas,sdto,edto)
svs = np.unique(svs)
print("Found ",np.size(svs),"SVS",svs)
else:
antenna = antennaType(args.AntType,antennas)
#print("Found:",antenna)
if args.polar or args.elevation or args.elevationMedian :
import matplotlib.pyplot as plt
from matplotlib import cm
aData = antenna['data'][0]
if args.LCdata:
tmpL1 = antenna['data'][0] * 2.5457
tmpL2 = antenna['data'][1] * 1.5457
aData = tmpL1 - tmpL2
if args.polar :
az = np.linspace(0,360,int(360./antenna['dazi'] +1))
zz = np.linspace(antenna['dzen'][0],antenna['dzen'][1],int(90./antenna['dzen'][2] + 1))
fig = plt.figure(figsize=(3.62, 2.76))
ax = fig.add_subplot(111,polar=True)
ax.set_theta_direction(-1)
ax.set_theta_offset(np.radians(90.))
ax.set_ylim([0,1])
ax.set_rgrids((0.00001, np.radians(20)/np.pi*2, np.radians(40)/np.pi*2,np.radians(60)/np.pi*2,np.radians(80)/np.pi*2),labels=('0', '20', '40', '60', '80'),angle=180)
ma,mz = np.meshgrid(az,zz,indexing='ij')
ma = ma.reshape(ma.size,)
mz = mz.reshape(mz.size,)
polar = ax.scatter(np.radians(ma), np.radians(mz)/np.pi*2., c=aData, s=50, alpha=1., cmap=cm.RdBu,vmin=-15,vmax=15, lw=0)
cbar = fig.colorbar(polar,shrink=0.75,pad=.10)
cbar.ax.tick_params(labelsize=8)
if args.LCdata:
cbar.set_label('LC PCV (mm)',size=8)
else:
cbar.set_label('L1 PCV (mm)',size=8)
plt_layout(ax,8)
plt.tight_layout()
if args.elevation :
zz = np.linspace(antenna['dzen'][0],antenna['dzen'][1],antenna['dzen'][1]/antenna['dzen'][2]+1)
#zz = np.linspace(0,90,19)
#zz = np.linspace(0,90,181)
ele = 90. - zz[::-1]
# Do an elevation only plot
fig = plt.figure(figsize=(3.62, 2.76))
ax = fig.add_subplot(111)
# check to see if it is a satellite antenna (< 14 degrees)
if antenna['dzen'][1] > 30. :
for zen in aData :
ax.plot(ele,zen[::-1])
ax.set_xlabel('Elevation Angle (degrees)',fontsize=8)
else:
ax.plot(zz,antenna['noazi'])
ax.set_xlabel('Nadir Angle (degrees)',fontsize=8)
ax.set_ylabel('PCV (mm)',fontsize=8)
#ax.set_ylim([-15, 15])
plt_layout(ax,8)
plt.tight_layout()
if args.elevationMedian :
zz = np.linspace(0,90,181)
ele = 90. - zz[::-1]
# Do an elevation only plot
fig = plt.figure(figsize=(3.62, 2.76))
ax = fig.add_subplot(111)
#med = np.median(aData,axis=0)
med = np.mean(aData,axis=0)
ax.plot(ele,med[::-1])
#for zen in aData :
# ax.plot(ele,zen[::-1])
ax.set_xlabel('Elevation Angle (degrees)',fontsize=8)
ax.set_ylabel('PCV (mm)',fontsize=8)
ax.set_xlim([10, 90])
ax.set_ylim([-10, 5])
plt_layout(ax,8)
plt.tight_layout()
if args.polar or args.elevation or args.elevationMedian :
plt.show()
#==============================================================================