Extract by Attributes Tool ArcGIS

Extract by Attributes Tool, Extraction Toolset, Spatial Analyst ArcToolbox
Summary
Extracts the cells of a raster based on a logical query.
Usage
Additional attributes from the input raster, if any, will be carried over as-is to the output raster attribute table. Depending on the nature of the property being recorded, some of the attribute values may need to be recalculated.

When a multiband raster is specified as the Input Raster (in_raster in Python), all bands will be used.

To process a selection of bands from a multiband raster, first create a new raster dataset composed of those particular bands with the Composite Bands tool, and use the result as the Input Raster (in_raster in Python).

The default output format is a geodatabase raster. If an Esri Grid stack is specified as the output format, note that the name cannot start with a number, use spaces, or be more than nine characters in length.

If the Where clause evaluates to true, the original input value is returned for the cell location. If it evaluates to false, the cell location is assigned NoData.

The Where clause uses an SQL query. See the following topics for more details on creating queries in the Query Builder:

Building a query expression
SQL reference for query expressions used in ArcGIS
In order to use a {where_clause} in Python, it should be enclosed in quotes. For example, "Value more than 5000".

You can consult the help for more information on specifying a query in Python.

If an item other than Value of input raster is specified in the query, the original input value is returned for the cell location.

If the input raster is integer, the output raster will be integer. If the input is floating point, the output will be floating point.

See Analysis environments and Spatial Analyst for additional details on the geoprocessing environments that apply to this tool.

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