Reproject

Summary

Creates a raster object by modifying the projection of the input raster.

Discussion

For more information about how this function works, see the Reproject raster function.

The referenced raster dataset for the raster object is temporary. To make it permanent, you can call the raster object's save method.

Syntax

Reproject(raster, {spatial_reference}, {x_cell_size}, {y_cell_size}, {x_registration_point}, {y_registration_point})

Parameter	Explanation	Data Type
raster	The input raster.	Raster
spatial_reference	The coordinate system used to reproject the data. This value is provided as a Python dictionary with the well-known ID (wkid). Optionally, you can include the latest well-known ID (latestWkid), or the current wkid value associated with the same spatial reference. For example, the WGS 1984 Web Mercator Auxiliary Sphere projection has a wkid of 102100 and a latestWKid of 3857. To reproject the input raster object into Web Mercator, use {"wkid" : 102100} or {"wkid" : 102100, "latestWkid" : 3857}. The default value is None.	Dictionary
x_cell_size	The cell size in the x-dimension to use if resampling the data. If no value is provided or the value is 0, the output envelope (extent and cell sizes) is calculated from the input raster. The default value is 0.	Integer
y_cell_size	The cell size in the y-dimension to use if resampling the data. If no value is provided or the value is 0, the output envelope (extent and cell sizes) is calculated from the input raster. The default value is 0.	Integer
x_registration_point	The x-coordinate used to define the upper left corner of the dataset. The coordinate must be in the units of the new spatial reference. If both x_cell_size and y_cell_size are defined and greater than 0, they are used along with the x_registration_point and y_registration_point arguments to define the output envelope. The default value is 0.	Double
y_registration_point	The y-coordinate used to define the upper left corner of the dataset. The coordinate must be in the units of the new spatial reference. If both x_cell_size and y_cell_size are defined and greater than 0, they are used along with the x_registration_point and y_registration_point arguments to define the output envelope. The default value is 0.	Double

Return value

Data Type	Explanation
Raster	The reprojected raster object.

Code sample

Reproject example

Reprojects a raster to the WGS 1984 UTM Zone 11N coordinate system.

# Import system modules
import arcpy
from arcpy.ia import *

input_raster = arcpy.Raster("LasVegas_LandCover.tif")

# reproject the input raster to WGS 1984 UTM Zone 11N
reprojected_raster = arcpy.ia.Reproject(input_raster, {"wkid" : 32611})

# verify the new coordinate system
prj = print(arcpy.Describe(reprojected_raster).spatialReference.name)

# save the output
reprojected_raster.save("C:/arcpyExamples/outputs/LasVegas_LandCover_UTM11N.tif")