Batch conversion of NetCDF to raster - python script

RobKay — Fri, 10 Aug 2012 03:54:08 GMT

Hi everyone
I've got a lot of netCDF files that I have to convert to rasters. Each netCDF will be divided into 12 rasters based on the "month" dimension (jan = 1 .... dec = 12). I've written a script to loop through all the netCDF files in my workspace and convert them to the rasters, each with an appropriate name. I need some help fixing the script, it falls over before converting anything and gives me the following error:

Processing: E:\SOLAR_DATA\netcdf\monthly_means_daily_ghe\ghe_stats_1990-1990.nc
Traceback (most recent call last):
File "N:/gdmp/Solar/BOMNetCDFConversion/rob_working.py", line 90, in <module>
arcpy.MakeNetCDFRasterLayer_md(nc, variable, xdimension, ydimension, nowFileNew, "", ncDimValue, valueSelectionMethod)
File "C:\Program Files\ArcGIS\Desktop10.0\arcpy\arcpy\md.py", line 165, in MakeNetCDFRasterLayer
raise e
ExecuteError: Failed to execute. Parameters are not valid.
ERROR 000238: One or more dimension values are invalid
Failed to execute (MakeNetCDFRasterLayer).

My script is attached.

Any help would be greatly appreciated
Cheers
Rob

Re: Batch conversion of NetCDF to raster - python script

RobKay — Tue, 21 Aug 2012 23:38:06 GMT

Hi everyone
I figured out what was going wrong and thought I'd post it just in case someone was running into the same issue.
The MakeNetCDFRasterLayer_md command was not working because the required input for the dimension_values parameter is a value table, I was trying to input a different data type.

MakeNetCDFRasterLayer_md (in_netcdf_file, variable, x_dimension, y_dimension, out_raster_layer, {band_dimension}, {dimension_values}, {value_selection_method})

Once I created the value table and loaded it with the appropriate dimensions and values, 2 column table as is shown when running the tool in desktop, everything went smoothly.

Cheers
Rob

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Batch conversion of NetCDF to raster - python script

Re: Batch conversion of NetCDF to raster - python script