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Raster Tools Reproject
This tool reprojects raster geodata from one projection to another. The tool uses the standard ArcGIS ‘Project Rasters (Data Management)’ tool. For more detailed help see ESRI Help for the ‘Project Rasters (Data Management)’ tool.
Table for Rasters: This is the input table, usually the results table generated by the Geodata > Search tool, but it can be any table with a field containing the full path to the rasters you want to project. If the Input Table is a DBF, or a table in an ESRI File Geodatabase, then you can select a subset of rows in ArcMap and only those rows will be processed by the tool.
Field for Raster: Select the field from the 'Table for Rasters' that contains the full path to the raster items you want to project.
Output Spatial Reference: The coordinate system to which the input raster will be projected. The default value is set based on the Output Coordinate System environment setting. If you want to select a coordinate system that differs from the default then click on the list icon to the right and select a new one.
Cell Size: The cell size for the new raster dataset. The default cell size is the cell size of the selected raster dataset. Or you can specify the ‘minimum’ or ‘maximum’ of inputs or a user defined cell size based on the values entered in the input box.
Resampling Method: The resampling algorithm to be used. The default is NEAREST. Select from:
- NEAREST—Nearest neighbour assignment
- BILINEAR—Bilinear interpolation
- CUBIC—Cubic convolution
- MAJORITY—Majority resampling
The NEAREST and MAJORITY options are used for categorical data, such as a land-use classification. The NEAREST option is the default since it is the quickest and also because it will not change the cell values. Do not use NEAREST or MAJORITY for continuous data, such as elevation surfaces. The BILINEAR option and the CUBIC option are most appropriate for continuous data. It is not recommended that BILINEAR or CUBIC be used with categorical geodata because the cell values may be altered
Format for output rasters: Raster format for output geodata. You can choose from: Esri Grid, img (ERDAS IMAGINE) or tif (GeoTIFF). If you select a file geodatabase for the Result Workspace then the output format will default to ‘Esri Grid’. When storing your raster geodata to a JPEG file, a JPEG 2000 file, a TIFF file, or a geodatabase, you can specify a compression type and compression quality within Geoprocessing > Environments.
Output Workspace: This is the location for the Grid Garage results table containing the list of geodata processed by the tool as well as any data outputs. If the tool encounters any errors when processing the input geodata then a second results table will be generated, with a ‘_FAIL’ suffix, listing the input geodata that failed and any ESRI error messages.
If you have set the ArcGIS ‘Workspace' parameter in the Geoprocessing > Environment Settings then this path will be used as the default. You can use this default path or click the folder button to select a new output location which can be a folder or File Geodatabase. If you specify a folder then the Results Table will be written to a comma-delimited (CSV) text file, if you specify a File Geodatabase it will be written as a Geodatabase Table.
Result Table Name: You can choose to use the default table name or specify a different name for the Grid Garage results table. The Grid Garage results table reports on a range of different properties for each of the geodata items in the 'Table for Geodata' input table. See the Grid Garage User Manual for a description of all the properties reported on.
If the tool encounters any errors when processing any of the geodata then a second results table will be generated, with a ‘_FAIL’ suffix, listing the input geodata that failed and any ESRI error messages. If you choose a folder for the Output Workspace then the result table will be written to a comma-delimited (CSV) text file which will not allow you to select rows for processing when using the table as input for other Grid Garage Tools.
Result Table file name: The default name will always take the form of ‘ReprojectRasterTool_date_time’, where ‘date’ and ‘time’ are the date and time that the tool was run.
Registration Point (optional): The x and y coordinates (in the output space) used for pixel alignment. The registration point works similar to the concept of snap raster. Instead of snapping the output to an existing raster cell alignment, the registration point allows you to specify the origin point for anchoring the output cells. All output cells will be an interval of the cell size away from this point. This point does not have to be a corner coordinate or fall within the raster dataset. The Snap Raster environment setting will take priority over the Registration Point parameter. Therefore, if you want to set the registration point, make sure that Snap Raster is not set.
Transformation Overrides (optional): The transformation method used between two geographic systems or datums. The geographic transformation is optional when the input and output coordinate systems have the same datum. If the input and output datum are different, a geographic transformation needs to be specified. For information on each supported geographic (datum) transformations, see the geographic_transformations.pdf file to be found in the \Documentation folder of your ArcGIS installation.
Output File Workspace (optional): If you want the output geodata files to be saved in a different location to the ‘Output Workspace’ you can select a new location (folder or File Geodatabase, depending on the output file type). The result tables will still be written to the ‘Output Workspace’ specified above.
Output Filename Prefix (optional): Any text you enter in this input box will be added as a prefix (at the beginning) for all output file names.
Output Filename Suffix (optional): Any text you enter in this input box will be added as a suffix (at the end) for all output file names.