Use -9999.0 as fill, not NaN

cris-viirs/convert_ccast_sdr.py

@@ -4,6 +4,7 @@
 import sys
 
 import h5py
+import numpy as np
 from scipy.io import loadmat
 
 def main():
@@ -18,6 +19,10 @@ def main():
     mw = mat['ES_RealMW'].transpose()
     sw = mat['ES_RealSW'].transpose()
 
+    lw[np.isnan(lw)] = -9999.0
+    mw[np.isnan(mw)] = -9999.0
+    sw[np.isnan(sw)] = -9999.0
+
     output_filename = filename[:-4] + '.h5'
 
     f = h5py.File(output_filename, 'w')