Shift (Data Management)

Summary

Moves (slides) the raster to a new geographic location, based on x and y shift values. This tool is helpful if your raster dataset needs to be shifted to align with another data file.

Illustration

Usage

• The cell size of the output raster will be the same as that of the input raster.

• The number of rows and columns in the output raster will be the same as those of the input raster, no matter what parameters are specified.

• The coordinates of the lower left corner of the output raster will be offset from the input raster by the x and y shift coordinate values specified.

• Using a negative shift x-coordinate value will shift the output to the left. A positive shift x-coordinate value will shift the output to the right. Using a negative shift y-coordinate value will shift the output down. A positive shift y-coordinate value will shift the output to the top.

• The output raster dataset is nudged according to the location of the input snap raster, so the new shifted raster dataset can be aligned perfectly with another raster dataset.

• Shift does not perform any resampling or warping.

• You can save your output to BIL, BIP, BMP, BSQ, DAT, GIF, GRID, IMG, JPEG, JPEG 2000, PNG, TIFF, or any geodatabase raster dataset.

• When storing your raster dataset to a JPEG file, a JPEG 2000 file, or a geodatabase, you can specify a Compression type and Compression Quality within the Environment Settings.

Syntax

Shift_management (in_raster, out_raster, x_value, y_value, {in_snap_raster})

Parameter	Explanation	Data Type
in_raster	The input raster dataset.	Raster Layer
out_raster	Output raster dataset. When storing the raster dataset in a file format, you need to specify the file extension: .bil—ESRI BIL .bip—ESRI BIP .bmp—BMP .bsq—ESRI BSQ .dat—ENVI DAT .gif—GIF .img—ERDAS IMAGINE file .jpg—JPEG .jp2—JPEG 2000 .png—PNG .tif—TIFF no extension—ESRI GRID 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
x_value	The value used to shift the x coordinates.	Double
y_value	The value used to shift the y coordinates.	Double
in_snap_raster (Optional)	The raster dataset used to align the cells of the output raster dataset.	Raster Layer

Code Sample

Shift example 1 (Python window)

This is a Python sample for the Shift tool.

import arcpy
arcpy.Shift_management("c:/data/image.tif", "c:/output/shift.tif", "100",\
                       "150", "snap.tif")

Shift example 2 (stand-alone script)

This is a Python script sample for the Shift tool.

##====================================
##Shift
##Usage: Shift_management in_raster out_raster x_value y_value {in_snap_raster}
    
try:
    import arcpy
    
    arcpy.env.workspace = r"C:/Workspace"
    
    ##Shift a TIFF image by 4.5 in X direction and 6 in Y direction
    ##Snap the output to a existing raster dataset
    arcpy.Shift_management("image.tif", "shift.tif", "4.5", "6", "snap.tif")
    
except:
    print "Shift example failed."
    print arcpy.GetMessages()

Environments

Compression, Current Workspace, Output CONFIG Keyword, Output Coordinate System, Extent, Pyramid, Raster Statistics, Scratch Workspace, Tile Size, Snap Raster

Snap Raster

If the snap raster is set in the tool and also in the Environment Settings, the snap raster from the tool will be used.

Licensing Information

ArcView: Yes

ArcEditor: Yes

ArcInfo: Yes