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Geoprocessing tool reference > Environment Settings > General settings

M Resolution
Release 9.3 Last modified December 17, 2008	Print all topics in : "General settings"

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NOTE: This environment is only applicable to ArcGIS 9.2 or higher.

Specify the M resolution that will be used for processing and set to the output geodataset.

Learn more about M resolution.

Usage tips

Unlike XY and Z resolution, the M resolution of a feature class inside a feature dataset is not constrained to match the feature dataset's M resolution. For feature classes created inside a feature dataset, the feature dataset's M resolution is used as the default. To override this default, set the M resolution environment to the desired value.

If the output is a stand-alone feature class, raster catalog, or feature dataset, the tolerance of the input will be used as the processing and set as the output feature class' Z resolution. For tools that have multiple inputs (Intersect, for example) the resolution of the first geodataset in the list will be used as the default. To override these defaults, set the Z resolution environment to the desired value.

If the tool does not have an input geodataset (for example, Create Feature Class, Create Feature Dataset, and Create Raster Catalog) and if the environment is left blank, the default M resolution is set to 0.001 unit. To override this default, set the environment to the desired value.

Command line syntax

Parameters	Explanation	Data type
<Double>	The resolution of m-values when feature classes are created. The default value is the same as the XY resolution of 0.0001 meter or its equivalent in map units.	Double

MResolution 0.002

Scripting syntax

Parameters	Explanation	Data type
Double (Required)	The resolution of m-values when feature classes are created. The default value is the same as the XY resolution of 0.0001 meter or its equivalent in map units.	Double

import arcgisscripting
gp = arcgisscripting.create()
gp.workspace = "h:/workspace"
gp.MResolution = "0.002"

M Resolution