topic Re: Syntax for Merge with map algebra in ArcGIS 10 in ArcGIS Spatial Analyst Questions

Syntax for Merge with map algebra in ArcGIS 10

GraziaZulian — Thu, 09 Jun 2011 06:52:31 GMT

Hi

With arcgis 9.x there was the Merge operator for the map Algebra syntax
Es:
MERGE (ras1, ras2)
What is the equivalent command for the new version?
How do I use it in a python script? Thanks, Grazia

Re: Syntax for Merge with map algebra in ArcGIS 10

DanPatterson_Retired — Thu, 09 Jun 2011 12:01:33 GMT

mosaic
http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Mosaic/001700000097000000/
or mosaic to new raster
http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Mosaic_To_New_Raster/001700000098000000/
script examples are contained there as well

Re: Syntax for Merge with map algebra in ArcGIS 10

TimothyHales — Sat, 11 Dec 2021 19:01:55 GMT

You will need to use the Mosaic to New Raster tool.

This is a Python sample for the MosaicToNewRaster tool to use in the Python Window.

 
import arcpy
from arcpy import 
envenv.workspace = "c:/data"arcpy.MosaicToNewRaster_management("land1.tif;land2.tif", "landnew.tif",\
                                                                                                       "World_Mercator.prj", "8_BIT_UNSIGNED",\ 
                                                                                                       "40", "1", "LAST","FIRST")

There is also a python standalone version at the bottom of the tool's help page:Mosaic To New Raster

Also see the following thread: Raster Calculator Merge Function in ArcGIS 10?

Re: Syntax for Merge with map algebra in ArcGIS 10

GraziaZulian — Mon, 27 Jun 2011 13:14:39 GMT

thank a lot
Grazia