topic Re: Batch processing: turning NetCDF to raster in Python Questions

Batch processing: turning NetCDF to raster

awei — Sat, 11 Dec 2021 18:34:43 GMT

I did a bit searching on the Internet and here's my practice:

import arcpy as ap  
import glob  
  
# this will give you a Python list object that you can use to batch process all of your files  
# just insert the path to your folder holding the netCDF files  
cdfList = glob.glob('F:\\NLDAS 2-primary forcing\\test\\*.nc')  
print cdfList


# now you can loop through your list and process each file one at a time  
for cdf in cdfList:  
    print "Now processing: " + cdf  
    ap.md.MakeNetCDFRasterLayer(cdf,"pevapsfc","lon","lat",cdf+"_r")  
print "Done!"

It ran smoothly but I didn't see anything on my output folder. Did I do something wrong?

Re: Batch processing: turning NetCDF to raster

IanMurray — Fri, 10 Jul 2015 20:06:06 GMT

What version of ArcGIS are you running?

For Arc 10.X, it should be ap.MakeNetCDFRasterLayer_md for the tool, not ap.md.MakeNetCDFRasterLayer

ArcGIS Desktop

Re: Batch processing: turning NetCDF to raster

awei — Fri, 10 Jul 2015 20:12:53 GMT

still nothing! weird! I know this should provide a layer file. where can I find that?

Re: Batch processing: turning NetCDF to raster

awei — Fri, 10 Jul 2015 20:13:17 GMT

I'm using 10.2.2

Re: Batch processing: turning NetCDF to raster

IanMurray — Fri, 10 Jul 2015 20:21:46 GMT

Are you doing this within a map document or outside?

If outside, you need to save a layer file for each one, as the help says

"To save the output layer, right-click the layer in the ArcMap table of contents and click Save As Layer File, or use the Save To Layer File tool."

Otherwise, you can change the environment settings to guarantee geoprocessing outputs are added to the map document, if it doesn't add automatically after geoprocessing.

Re: Batch processing: turning NetCDF to raster

SteveLynch — Fri, 10 Jul 2015 20:25:05 GMT

it returns an in-memory raster layer. Use SaveToLayerFile_management or CopyRaster_management to persist the result.

-Steve

Re: Batch processing: turning NetCDF to raster

awei — Tue, 14 Jul 2015 13:30:12 GMT

I didn't know there's a difference running code in and out of software and I found that very helpful! Thank you so much.