simple raster processing, fill with integer [python]

[HugoAhlenius]

Hi, how do I just fill an extent with an integer value, like 1? I have defined cellsize and extent in the environment, but then I would like create a grid with all cells set to e.g. 1.

In ArcInfo Grid I would do:

newGrid = 1

[ChrisSnyder]

In v9.3:

gp.extent = "0 0 1000 5000"
#or gp.extent = r"C:\temp\test.shp"
#optional gp.mask = r"C:\temp\test.shp"
gp.cellsize = "100"
# optional gp.snapraster = someOtherGrid
somaExp = "1"
outputGrd= r"C:\temp\test"
gp.SingleOutputMapAlgebra_sa (somaExp, outputGrd, "")

[DanPatterson_Retired]

what version of ArcMap?
have you ruled out the raster calculator? (placed in different locations depending upon versions)
have you ruled out the Constant Raster Tool in ArcToolbox, which can also be implemented via Python.

[HugoAhlenius]

This is ArcGIS 10 - and I didn't know about the Constant Raster tool - thanks for the pointer, although it seems like a convoluted way to do that!

[DanPatterson_Retired]

there are some examples in the online help
http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z000000s4000000.htm