Clip (Data Management)
Summary
Creates a spatial subset of a raster, including a raster dataset, mosaic dataset, or image service layer.
Illustration
Usage
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This tool allows you to extract a portion of a raster dataset based on a template extent. The clip output includes any pixels that intersect the template extent. If you want to extract a portion of a feature dataset, use the Clip tool found in the Analysis toolbox.
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The clipped area is specified either by a rectangular envelope using minimum and maximum x- and y-coordinates or by using an output extent file. If the clip extent specified is not aligned with the input raster dataset, this tool makes sure that the proper alignment is used. This may cause the output to have a slightly different extent than specified in the tool.
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An existing raster or vector layer can be used as the clip extent. If you are using a feature class as the output extent, you have the option to clip the raster by the minimum bounding rectangle of the feature class or by the polygon geometry of the features. If clipping geometry is used, then the pixel depth of the output may be promoted. Therefore, you need to make sure that the output format can support the proper pixel depth.
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When using ArcMap, you also have the ability to use the selected features as the clipping extent. If a feature within the feature class is selected and Selection Extent is checked (clipping_geometry is set to ClippingGeometry), then the output clips out the areas that are selected. If a feature within the feature class is selected but Selection Extent is not checked, then the output clips out the minimum bounding rectangle for that feature.
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You can save your output to BIL, BIP, BMP, BSQ, DAT, Esri Grid, GIF, IMG, JPEG, JPEG 2000, PNG, TIFF, or any geodatabase raster dataset.
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The extent values must be in the same spatial coordinates and units as the raster dataset.
Syntax
Parameter | Explanation | Data Type |
in_raster |
The input raster dataset. | Mosaic Dataset; Mosaic Layer; Raster Dataset; Raster Layer |
rectangle |
The four coordinates defining the minimum bounding rectangle to be clipped are defined in this order: X-Minimum, Y-Minimum, X-Maximum, Y-Maximum. If the clip extent specified is not aligned with the input raster dataset, the Clip tool makes sure that the proper alignment is used. This may cause the output to have a slightly different extent than specified in the tool. | Envelope |
out_raster |
The output raster dataset. Make sure that this output format is able to support the proper pixel depth. When storing the raster dataset in a file format, you need to specify the file extension:
When storing a raster dataset in a geodatabase, no file extension should be added to the name of the raster dataset. When storing your raster dataset to a JPEG file, a JPEG 2000 file, a TIFF file, or a geodatabase, you can specify a compression type and compression quality. | Raster Dataset |
in_template_dataset (Optional) |
An existing raster or vector layer that can be used as the clip extent. The clip output includes any pixels that intersect the minimum bounding rectangle. If a feature class is used as the output extent and you want to clip the raster based on the polygon features, use the clipping_geometry option. If this is checked, then the pixel depth of the output may be promoted. Therefore, you need to make sure that the output format can support the proper pixel depth. | Raster Layer; Feature Layer |
nodata_value (Optional) |
All the pixels with the specified value will be set to NoData in the output raster dataset. | String |
clipping_geometry (Optional) |
If you are using a feature class as the output extent, you have the option to clip the raster by the extent of the feature class or by its polygon perimeter.
If clipping geometry is used, then the pixel depth of the output may be promoted. Therefore, you need to make sure that the output format can support the proper pixel depth. | Boolean |
Code Sample
This is a Python sample for the Clip tool.
import arcpy
arcpy.Clip_management("c:/data/image.tif","1952602 294196 1953546 296176",
"c:/data/clip.gdb/clip01", "#", "#", "NONE")
This is a Python script sample for the Clip tool.
##====================================
##Clip
##Usage: Clip_management in_raster rectangle out_raster {in_template_dataset} {nodata_value} {NONE | ClippingGeometry}
try:
import arcpy
arcpy.env.workspace = r"C:/Workspace"
##Clip Raster Dataset by known extent - Left Bottom Right Top
arcpy.Clip_management("image.tif","1952602.23 294196.279 1953546.23 296176.279","clip.gdb/clip", "#", "#", "NONE")
##Clip Raster Dataset with feature geometry
arcpy.Clip_management("image.tif", "#", "clip.tif","feature.shp", "0", "ClippingGeometry")
except:
print "Clip example failed."
print arcpy.GetMessages()