Dear Matt,Sorry, I am new to Python. I tried the loop that you gave me but it still gives me the same errors. Here is the code that I put together: # Import arcpy module
import arcpy, os
from arcpy import env
from arcpy.sa import *
# Check out any necessary licenses
arcpy.CheckOutExtension("spatial")
# Input data source
arcpy.env.workspace = "S:/Work/Risa/Trials_Errors/InputFiles02"
arcpy.env.scratchWorkspace = "S:/Work/Risa/Trials_Errors/ScratchWorkSpace"
arcpy.env.overwriteOutput = True
ZoneData = "S:/Work/Risa/USA Boundary_AlbersNAD83/PINEMAP_Counties_USCensus.shp"
# Output File
OutputFolder = "S:/Work/Risa/Trials_Errors/ZonalStats"
# Loop through a list of files in the workspace
RasterFiles = arcpy.ListRasters()
print RasterFiles
print " "
# Local variables:
for filename in RasterFiles:
print "Processing: {0}".format(filename)
input_dir = arcpy.env.workspace
inRaster = os.path.join(input_dir,filename)
outRaster = os.path.join(OutputFolder,"Avg_" + filename)
# Process: Zonal Statistics
saveRaster = arcpy.sa.ZonalStatistics(ZoneData, "ZoneField", inRaster, "MEAN", "DATA")
saveRaster.save(outRaster)
print " "
print ":o) End Processing :)"
print arcpy.GetMessages()
and here is the error message:[u'ppt_1970_03.tif', u'ppt_1970_04.tif', u'ppt_1970_05.tif']
Processing: ppt_1970_03.tif
Traceback (most recent call last):
File "S:/Work/Risa/Python codes/zonalStats_test02.py", line 39, in <module>
saveRaster = arcpy.sa.ZonalStatistics(ZoneData, "ZoneField", inRaster, "MEAN", "DATA")
File "C:\Program Files (x86)\ArcGIS\Desktop10.0\arcpy\arcpy\sa\Functions.py", line 5787, in ZonalStatistics
ignore_nodata)
File "C:\Program Files (x86)\ArcGIS\Desktop10.0\arcpy\arcpy\sa\Utils.py", line 47, in swapper
result = wrapper(*args, **kwargs)
File "C:\Program Files (x86)\ArcGIS\Desktop10.0\arcpy\arcpy\sa\Functions.py", line 5780, in wrapper
ignore_nodata)
File "C:\Program Files (x86)\ArcGIS\Desktop10.0\arcpy\arcpy\geoprocessing\_base.py", line 474, in <lambda>
return lambda *args: val(*gp_fixargs(args))
ExecuteError: ERROR 999999: Error executing function.
Failed to open raster dataset
Failed to execute (ZonalStatistics).
thank you very much for your help. I will post the previous code and error message shortly.Risa