topic Re: Convert data type in Euclidean distance calculation script in ArcGIS Spatial Analyst Questions

Convert data type in Euclidean distance calculation script

AndrewOrr — Tue, 17 Apr 2012 13:29:29 GMT

Hi all,
I have a python script where I'm trying to perform a Euclidean distance on a feature class to generate a raster. The map units are meters so it outputs the cell size in meters as an integer format. I want it in miles, so I multiply by a constant to convert to miles. This, however, does not change the integer data format to a floating point. Is there any way to specify or convert the output Euclidean distance data format to FP so I can get an output as FP?

Here is the line of code I'm using in the script:

OutEucDistance = (EucDistance(src_layer, "", resolution, "")*0.000621371192)

Thanks for the help,
-Andy

Re: Convert data type in Euclidean distance calculation script

DanPatterson_Retired — Tue, 17 Apr 2012 13:49:52 GMT

according to the help
http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z0000001p000000.htm
the output raster is supposed to be floating point, perhaps trying to multiply that raster by a constant raster outside you euclidean distance might work

Re: Convert data type in Euclidean distance calculation script

AndrewOrr — Tue, 17 Apr 2012 17:06:07 GMT

That's an idea! I'll look into it. Thanks!
-Andy

Re: Convert data type in Euclidean distance calculation script

curtvprice — Sat, 11 Dec 2021 14:36:58 GMT

This, however, does not change the integer data format to a floating point. Is there any way to specify or convert the output Euclidean distance data format to FP so I can get an output as FP?

As Dapper Dan pointed out, the output of EucDistance should be floating point. And, (integer * float) should always give you float. But if you want to make triple sure, you can always convert a grid to float using the Float tool.

One thing that may be messing you up is the artificial ArcGIS designation of a raster as "discrete" or "continuous", which is used for symbology but can be unrelated to the pixel data type.

from arcpy.sa import *
...
OutEucDistance = Float(EucDistance(src_layer, "", resolution, "")) * 0.000621371192

Re: Convert data type in Euclidean distance calculation script

curtvprice — Sat, 11 Dec 2021 14:37:00 GMT

This, however, does not change the integer data format to a floating point. Is there any way to specify or convert the output Euclidean distance data format to FP so I can get an output as FP?

As was pointed out, the output of EucDistance should be floating point. And, integer * float should give you float. But if you want to make triple sure, you can always convert a grid to float using the Float tool.

from arcpy.sa import *
...
OutEucDistance = Float(EucDistance(src_layer, "", resolution, "")) * 0.000621371192

Re: Convert data type in Euclidean distance calculation script

AndrewOrr — Fri, 27 Apr 2012 18:32:24 GMT

Excellent, that worked very well curtvprice.

Thanks!
-Andy