topic Re: Zonal statistics as table: "cannot set input into parameter..." in Python Questions

Zonal statistics as table: "cannot set input into parameter..."

RichardThurau — Tue, 08 Mar 2011 19:57:37 GMT

Hi,
I'm trying to calculate statistics for multi-band raster based on an integer (zone) raster. I'm using the following code:

inZoneData = "P:/AOI_ras.img"
zoneField = "Value"
inValueRaster1 = "P:/bloom_mos1_stack1.img/Layer_1"
outTable1 = "P:/Stats/Lay1_stats"

arcpy.CheckOutExtension("Spatial")
# Execute ZonalStatistics as table
ZonalStatisticsAsTable(inZoneData, zoneField, inValueRaster1, outTable1, "ALL", "NODATA")

Seems simple enough, I've used this tool many times before in modelbuilder. Not today though. Python is returning the following error message:
"ExecuteError: ERROR 000622: Failed to execute (Zonal Statistics as Table). Parameters are not valid.
ERROR 000628: Cannot set input into parameter ignore_nodata."

I've messed around with setting the nodata parameter to "DATA", "NODATA", and left it blank (it is an optional parameter), but I get this same message everytime.

Anyone have any suggestions?

Thanks

Rich

Re: Zonal statistics as table: "cannot set input into parameter..."

ColinLindeman — Tue, 08 Mar 2011 20:52:15 GMT

Hi Rich,

It looks like you have the ignore_nodata value "NODATA" and the statistics_type value "ALL" mixed up.

Here is a reference for this tools variables in version 10:
# Zonal Stats as table...ZonalStatisticsAsTable (in_zone_data, zone_field, in_value_raster, out_table, {ignore_nodata}, {statistics_type})

So try changing this...
ZonalStatisticsAsTable(inZoneData, zoneField, inValueRaster1, outTable1, "ALL", "NODATA")

to this:
ZonalStatisticsAsTable(inZoneData, zoneField, inValueRaster1, outTable1, "NODATA", "ALL")

Hope that helps!

-Colin Lindeman

Re: Zonal statistics as table: "cannot set input into parameter..."

RichardThurau — Thu, 10 Mar 2011 00:38:51 GMT

Colin, thanks. This syntax kills me sometimes.

RT

Re: Zonal statistics as table: "cannot set input into parameter..."

RichardThurau — Thu, 08 Dec 2011 22:47:52 GMT

All fixed. Thanks