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#!/usr/bin/env python3
#
# Author: Piyush Agram
# Copyright 2016
#
# Heresh Fattahi, updated for stack processing
import numpy as np
import os
import isce
import isceobj
import datetime
import logging
import argparse
from isceobj.Util.ImageUtil import ImageLib as IML
from isceobj.Util.decorators import use_api
import s1a_isce_utils as ut
import glob
def createParser():
'''
Create command line parser.
'''
parser = argparse.ArgumentParser( description='Generate offset field between two Sentinel swaths')
parser.add_argument('-i', '--reference', type=str, dest='reference', required=True, help='Path to folder')
parser.add_argument('-k', '--kml', type=str, dest='shapefile', default=None, help='Path to kml')
parser.add_argument('-f', '--figure', type=str, dest='figure', default=None, help='Path to output PDF')
return parser
def cmdLineParse(iargs = None):
'''
Command line parser.
'''
parser = createParser()
inps = parser.parse_args(args=iargs)
return inps
def main(iargs=None):
'''
Merge burst products to make it look like stripmap.
Currently will merge interferogram, lat, lon, z and los.
'''
inps=cmdLineParse(iargs)
from osgeo import gdal, ogr, osr
import matplotlib
if inps.shapefile is not None:
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import matplotlib.patches as patches
swathList = ut.getSwathList(inps.reference)
swathColors = ['r', 'g', 'b']
shapeColors = ['FF0000','00FF00','0000FF']
fig = plt.figure('Burst map')
ax = fig.add_subplot(111,aspect='equal')
tmin = None
rmin = None
xmin = 1e10
ymin = 1e10
xmax = -1e10
ymax = -1e10
if inps.shapefile is not None:
ds = ogr.GetDriverByName('KML').CreateDataSource(inps.shapefile)
srs = osr.SpatialReference()
srs.SetWellKnownGeogCS('WGS84')
layer = ds.CreateLayer('bursts', srs=srs)
field_name = ogr.FieldDefn("Name", ogr.OFTString)
field_name.SetWidth(16)
layer.CreateField(field_name)
field_name = ogr.FieldDefn("OGR_STYLE", ogr.OFTString)
layer.CreateField(field_name)
for swath in swathList:
ifg = ut.loadProduct(os.path.join(inps.reference , 'IW{0}.xml'.format(swath)))
minBurst = ifg.bursts[0].burstNumber
maxBurst = ifg.bursts[-1].burstNumber
if tmin is None:
tmin = ifg.bursts[0].sensingStart
dtime = ifg.bursts[0].azimuthTimeInterval
rmin = ifg.bursts[0].startingRange
drange = ifg.bursts[0].rangePixelSize
if minBurst==maxBurst:
print('Skipping processing of swath {0}'.format(swath))
continue
if not inps.shapefile:
for ii in range(minBurst, maxBurst + 1):
burst = ifg.bursts[ii-minBurst]
x0 = np.round( (burst.startingRange - rmin)/drange)
y0 = np.round( (burst.sensingStart - tmin).total_seconds()/ dtime)
if ii %2 == 0:
style = 'solid'
else:
style = 'dashdot'
ax.add_patch( patches.Rectangle(
(x0,y0),
burst.numValidSamples,
burst.numValidLines,
edgecolor=swathColors[swath-1],
facecolor=swathColors[swath-1],
alpha=0.2,
linestyle=style))
xmin = min(xmin, x0)
xmax = max(xmax, x0 + burst.numValidSamples)
ymin = min(ymin, y0)
ymax = max(ymax, y0 + burst.numValidLines)
else:
for ii in range(minBurst, maxBurst+1):
burst = ifg.bursts[ii-minBurst]
t0 = burst.sensingStart + datetime.timedelta(seconds = burst.firstValidLine * burst.azimuthTimeInterval)
t1 = t0 + datetime.timedelta(seconds = burst.numValidLines * burst.azimuthTimeInterval)
r0 = burst.startingRange + burst.firstValidSample * burst.rangePixelSize
r1 = r0 + burst.numValidSamples * burst.rangePixelSize
earlyNear = burst.orbit.rdr2geo(t0,r0)
earlyFar = burst.orbit.rdr2geo(t0,r1)
lateFar = burst.orbit.rdr2geo(t1,r1)
lateNear = burst.orbit.rdr2geo(t1,r0)
ring = ogr.Geometry(ogr.wkbLinearRing)
from distutils.version import StrictVersion
if StrictVersion(gdal.__version__) >= StrictVersion("3.0"):
ring.AddPoint(earlyNear[0], earlyNear[1])
ring.AddPoint(earlyFar[0], earlyFar[1])
ring.AddPoint(lateFar[0], lateFar[1])
ring.AddPoint(lateNear[0], lateNear[1])
ring.AddPoint(earlyNear[0], earlyNear[1])
else:
ring.AddPoint(earlyNear[1], earlyNear[0])
ring.AddPoint(earlyFar[1], earlyFar[0])
ring.AddPoint(lateFar[1], lateFar[0])
ring.AddPoint(lateNear[1], lateNear[0])
ring.AddPoint(earlyNear[1], earlyNear[0])
feature = ogr.Feature(layer.GetLayerDefn())
feature.SetField('Name', 'IW{0}-{1}'.format(swath, ii))
feature.SetField('OGR_STYLE', "PEN(c:#{0},w:8px)".format(shapeColors[swath-1]))
feature.SetGeometry(ring)
layer.CreateFeature(feature)
feature = None
if not inps.shapefile:
plt.ylim([ymin, ymax])
plt.xlim([xmin, xmax])
if inps.figure is not None:
plt.savefig(inps.figure, format='pdf')
else:
plt.show()
else:
ds = None
print('Wrote KML file: ', inps.shapefile)
if __name__ == '__main__' :
'''
Merge products burst-by-burst.
'''
main()