def test_rasterValuesAtPoints(self):
# We need to make a .tif to test this function.
self.make_me_a_tif()
# Get the range of the tif
tifRange = su.getRasterExtent('PointData_TestData.tif')
# Now try to get some point values -- note they will be rounded to the
# nearest cell
xA = numpy.array([0., 10.3, 50.9, 100.])+tifRange[0]+0.5
yA = numpy.array([0., 20.1, 75.1, 100.])+tifRange[2]+0.5
z_predicted = numpy.round(xA)+numpy.round(yA) - \
tifRange[0]-tifRange[2]-1.0
InDat = numpy.vstack([xA, yA]).transpose()
z_fitted = su.rasterValuesAtPoints(
InDat, rasterFile='PointData_TestData.tif')
try:
assert(numpy.allclose(z_fitted, z_predicted))
except:
raise Exception(
'Error could be in rasterValuesAtPoints or in Make_Geotif')
# Try with bilinear interpolation
z_fitted = su.rasterValuesAtPoints(InDat, rasterFile='PointData_TestData.tif',
interpolation='bilinear')
z_predicted = xA + yA - tifRange[0] - tifRange[2] - 1.0
try:
assert(numpy.allclose(z_fitted, z_predicted))
except:
raise Exception(
'Error could be in rasterValuesAtPoints or in Make_Geotif')
return
def test_rasterValuesAtPoints(self):
# We need to make a .tif to test this function.
self.make_me_a_tif()
# Get the range of the tif
tifRange=su.getRasterExtent('PointData_TestData.tif')
# Now try to get some point values -- note they will be rounded to the
# nearest cell
xA=numpy.array([0., 10.3, 50.9, 100.])+tifRange[0]+0.5
yA=numpy.array([0., 20.1, 75.1, 100.])+tifRange[2]+0.5
z_predicted=numpy.round(xA)+numpy.round(yA)-tifRange[0]-tifRange[2]-1.0
InDat=numpy.vstack([xA,yA]).transpose()
z_fitted=su.rasterValuesAtPoints(InDat, rasterFile='PointData_TestData.tif')
try:
assert(numpy.allclose(z_fitted,z_predicted))
except:
raise Exception, 'Error could be in rasterValuesAtPoints or in Make_Geotif'
# Try with bilinear interpolation
z_fitted=su.rasterValuesAtPoints(InDat, rasterFile='PointData_TestData.tif',
interpolation='bilinear')
z_predicted = xA + yA - tifRange[0] - tifRange[2] - 1.0
try:
assert(numpy.allclose(z_fitted,z_predicted))
except:
raise Exception, 'Error could be in rasterValuesAtPoints or in Make_Geotif'
return
def QFun(x, y):
xll = domain.geo_reference.xllcorner
yll = domain.geo_reference.yllcorner
inDat = scipy.vstack([x + xll, y + yll]).transpose()
return rasterValuesAtPoints(xy=inDat,
rasterFile=rasterFile,
interpolation=interpolation)
def QFun(x,y):
xll=domain.geo_reference.xllcorner
yll=domain.geo_reference.yllcorner
inDat=scipy.vstack([x+xll,y+yll]).transpose()
return rasterValuesAtPoints(xy=inDat,rasterFile=rasterFile,
interpolation=interpolation)