From e2a81bbd6aca1b121e6612e07e21b17e37bab0f9 Mon Sep 17 00:00:00 2001
From: Ryan Burns <rtburns-jpl@users.noreply.github.com>
Date: Mon, 16 Dec 2019 10:22:01 -0800
Subject: [PATCH] Hide scipy imports for stripmapapp

---
 components/isceobj/StripmapProc/runDispersive.py |  3 ++-
 components/isceobj/TopsProc/runIon.py            | 12 +++++++-----
 components/isceobj/TopsProc/runOffsetFilter.py   |  3 ++-
 components/isceobj/TopsProc/runPrepESD.py        |  2 +-
 4 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/components/isceobj/StripmapProc/runDispersive.py b/components/isceobj/StripmapProc/runDispersive.py
index 305022b..724c189 100644
--- a/components/isceobj/StripmapProc/runDispersive.py
+++ b/components/isceobj/StripmapProc/runDispersive.py
@@ -9,7 +9,6 @@ from isceobj.Constants import SPEED_OF_LIGHT
 import numpy as np
 import gdal
 
-from scipy import ndimage
 try:
     import cv2
 except ImportError:
@@ -296,6 +295,8 @@ def fill(data, invalid=None):
     Output:
         Return a filled array.
     """
+    from scipy import ndimage
+
     if invalid is None: invalid = np.isnan(data)
 
     ind = ndimage.distance_transform_edt(invalid,
diff --git a/components/isceobj/TopsProc/runIon.py b/components/isceobj/TopsProc/runIon.py
index 8407287..d0c4af6 100644
--- a/components/isceobj/TopsProc/runIon.py
+++ b/components/isceobj/TopsProc/runIon.py
@@ -9,9 +9,6 @@ import shutil
 import datetime
 import numpy as np
 import numpy.matlib
-import scipy.signal as ss
-from scipy import interpolate
-from scipy.interpolate import interp1d
 
 import isceobj
 import logging
@@ -638,6 +635,7 @@ def cal_coherence(inf, win=5, edge=0):
 
           4: keep all samples
     '''
+    import scipy.signal as ss
 
     if win % 2 != 1:
         raise Exception('window size must be odd!')
@@ -1682,6 +1680,9 @@ def computeDopplerOffset(burst, firstline, lastline, firstcolumn, lastcolumn, nr
 
     output: first lines > 0, last lines < 0
     '''
+    from scipy import interpolate
+    from scipy.interpolate import interp1d
+
     Vs = np.linalg.norm(burst.orbit.interpolateOrbit(burst.sensingMid, method='hermite').getVelocity())
     Ks =   2 * Vs * burst.azimuthSteeringRate / burst.radarWavelength 
 
@@ -1830,6 +1831,7 @@ def adaptive_gaussian(ionos, wgt, size_max, size_min):
     size_max: maximum window size
     size_min: minimum window size
     '''
+    import scipy.signal as ss
 
     length = (ionos.shape)[0]
     width = (ionos.shape)[1]
@@ -1892,6 +1894,8 @@ def filt_gaussian(self, ionParam):
     currently not implemented.
     a less accurate method is to use ionsphere without any projection
     '''
+    from scipy import interpolate
+    from scipy.interpolate import interp1d
 
     #################################################
     #SET PARAMETERS HERE
@@ -2659,5 +2663,3 @@ def runIon(self):
     #esd_noion(self, ionParam)
 
     return
-
-    
\ No newline at end of file
diff --git a/components/isceobj/TopsProc/runOffsetFilter.py b/components/isceobj/TopsProc/runOffsetFilter.py
index 51735d9..e9989d9 100644
--- a/components/isceobj/TopsProc/runOffsetFilter.py
+++ b/components/isceobj/TopsProc/runOffsetFilter.py
@@ -3,7 +3,6 @@
 # Copyright 2016
 #
 
-from scipy.ndimage.filters import median_filter
 import numpy as np
 import isce
 import isceobj
@@ -20,6 +19,8 @@ def runOffsetFilter(self):
     if not self.doDenseOffsets:
         return
 
+    from scipy.ndimage.filters import median_filter
+
     offsetfile = os.path.join(self._insar.mergedDirname, self._insar.offsetfile) 
     snrfile = os.path.join(self._insar.mergedDirname, self._insar.snrfile)
     print('\n======================================')
diff --git a/components/isceobj/TopsProc/runPrepESD.py b/components/isceobj/TopsProc/runPrepESD.py
index 5d65b78..0cf9c3c 100755
--- a/components/isceobj/TopsProc/runPrepESD.py
+++ b/components/isceobj/TopsProc/runPrepESD.py
@@ -8,7 +8,6 @@ import numpy as np
 import os
 import isceobj
 import logging
-import scipy.signal as SS
 from isceobj.Util.ImageUtil import ImageLib as IML
 import datetime
 import pprint
@@ -177,6 +176,7 @@ def createCoherence(intfile, win=5):
     '''
     Compute coherence using scipy convolve 2D.
     '''
+    import scipy.signal as SS
 
     corfile = os.path.splitext(intfile)[0] + '.cor'
     filt = np.ones((win,win))/ (1.0*win*win)