From c2a4a4a08e4d853b8c963fbf6e9446573bca9b30 Mon Sep 17 00:00:00 2001
From: CunrenLiang <56097947+CunrenLiang@users.noreply.github.com>
Date: Mon, 13 Apr 2020 12:11:04 -0700
Subject: [PATCH 1/2] add back from scipy.interpolate import interp1d

add back the following imports:
1709a1710,1711
>     from scipy import interpolate
>     from scipy.interpolate import interp1d
2119a2122,2123
>     from scipy import interpolate
>     from scipy.interpolate import interp1d
---
 components/isceobj/TopsProc/runIon.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/components/isceobj/TopsProc/runIon.py b/components/isceobj/TopsProc/runIon.py
index de9e2a1..bedfbaa 100644
--- a/components/isceobj/TopsProc/runIon.py
+++ b/components/isceobj/TopsProc/runIon.py
@@ -1707,6 +1707,8 @@ def computeDopplerOffset(burst, firstline, lastline, firstcolumn, lastcolumn, nr
 
 
 def grd2ion(self, ionParam):
+    from scipy import interpolate
+    from scipy.interpolate import interp1d
 
     print('resampling ionosphere from ground to ionospheric layer')
     #get files
@@ -2117,6 +2119,8 @@ def ionosphere_shift(self, ionParam):
 
 
 def ion2grd(self, ionParam):
+    from scipy import interpolate
+    from scipy.interpolate import interp1d
 
     #################################################
     #SET PARAMETERS HERE

From ebe27ec44cab567590f6d7a67cb5904a8a87cb5b Mon Sep 17 00:00:00 2001
From: CunrenLiang <56097947+CunrenLiang@users.noreply.github.com>
Date: Mon, 13 Apr 2020 12:34:51 -0700
Subject: [PATCH 2/2] remove 'from scipy.interpolate import interp1d'

remove the following from routines where it is not needed:
>     from scipy import interpolate
>     from scipy.interpolate import interp1d
---
 components/isceobj/TopsProc/runIon.py | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/components/isceobj/TopsProc/runIon.py b/components/isceobj/TopsProc/runIon.py
index bedfbaa..e2258ae 100644
--- a/components/isceobj/TopsProc/runIon.py
+++ b/components/isceobj/TopsProc/runIon.py
@@ -1680,8 +1680,6 @@ 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 
@@ -1896,8 +1894,6 @@ 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