# Requirements: Spatial Analyst Extension, # Check out the ArcGIS Spatial Analyst extension license, Analysis environments and Spatial Analyst. Once the remap table of the reclassification has been modified, the table will not be updated if a new input raster is selected. The mapping platform for your organization, Free template maps and apps for your industry. If the input raster does not have an attribute table, you can run the Build Raster Attribute Table tool from the Data Management toolbox to build one before inputting the raster into the Reclassify tool. Click the Reclass field dropdown arrow and click the field you want to use. NODATA —Signifies that if any cell location on the input raster contains a value that is not present or reclassed in a remap table, the value will be reclassed to NoData for that location on the output raster. From scripting, when the output raster is written into a folder, it will be in TIFF format. The following example shows how to reclassify a raster into seven classes. See Analysis environments and Spatial Analyst for additional details on the geoprocessing environments that apply to this tool. The output will always be of integer type. Reclassifying values of a set of rasters to a common scale Click the Spatial Analyst dropdown arrow and click Reclassify. If the reclassification is not suitable for the new raster, a new reclassification can be reinitialized by one of the following methods. You can save the remap to any relational table format. The following are the forms of the remap objects. Field denoting the values that will be reclassified. Otherwise, when you input the raster, a reclassification table will be created for it by first applying geoprocessing environment settings, such as Extent and Cell size, and scanning the raster. Select and delete the remap entries and manually add the new values. The table format is specific and must contain the fields FROM, TO, OUT, and MAPPING. Select and delete the remap entries and manually add the new values. By default, this tool will take advantage of multi-core processors. If exposing the reclassification table as a model parameter, the reclass field must be exposed as a variable; however, it does not need to be set as a model parameter. If a range of values is to be reclassed, the ranges should not overlap except at the boundary of two input ranges. Otherwise, the reclassification must be manually entered or generated using the unique or classification options. There are two ways to define how the values will be reclassified in the output raster: RemapRange and RemapValue . How to Reclassify Raster Datasets in ArcGIS for Desktop | MD DoIT GIO Page 3 of 21 6. Click the Input raster dropdown arrow and click the raster with the values you want to prioritize. If the input raster has an attribute table, it will be used to create the initial reclassification table. Where overlapping occurs, the higher end of the lower input range is inclusive, and the lower end of the higher input range is exclusive. It is recommended to only load tables previously saved by the Reclassify tool. The maximum number of cores that can be used is four. Edit or select a field for the reclass field to invoke a new default reclassification. This tool has a precision control that manages how decimal places are treated. If a range of values is to be reclassed, the ranges should not overlap except at the boundary of two input ranges. Use the Load option to reload remap tables you previously created with the Save button. Once the remap table of the reclassification has been modified, the table will not be updated if a new input raster is selected. If the reclassification is not suitable for the new raster, a new reclassification can be reinitialized by one of the following methods, When using the Reclassify tool as part of a model. From the tool, the remap table can be stored for future use with the Save option. Input raster formats with double-precision (64 bit) cell values are supported. The current geoprocessing environment settings will be ignored when importing those values. Otherwise, the reclassification table will default to natural breaks with nine classes. Reclassifies (or changes) the values in a raster. If the input raster does not have an attribute table, you can run the Build Raster Attribute Table tool from the Data Management toolbox to build one before inputting the raster into the Reclassify tool. If the reclassification is not suitable for the new raster, a new reclassification can be reinitialized by one of the following methods Edit or select a field for the reclass field to invoke a new default reclassification. For example. The current geoprocessing environment settings will be ignored when importing those values. This example reclassifies the input raster based on the values in a string field. The following examples show several ways of reclassifying a raster. Field denoting the values that will be reclassified. Once the remap table of the reclassification has been modified, the table will not be updated if a new input raster is selected. Use the Load option to reload remap tables you previously created with the Save button. Signifies that if any cell location on the input raster contains a value that is not present or reclassed in a remap table, the value should remain intact and be written for that location to the output raster. Where overlapping occurs, the higher end of the lower input range is inclusive, and the lower end of the higher input range is exclusive. This example reclassifies the input raster based on the values in a string field. If the input raster has an attribute table, it will be used to create the initial reclassification table. If the field is not exposed as a variable, the classify and unique values buttons will be disabled in the model tool dialog box. Either ranges of input values can be assigned to a new output value, or individual values can be assigned to a new output value. Then in the Contents pane, highlight the Elevation layer. DATA —Signifies that if any cell location on the input raster contains a value that is not present or reclassed in a remap table, the value should remain intact and be written for that location to the output raster. From the tool, the remap table can be saved as an INFO table for future use with the Save option. Reclassifies (or changes) the values in a raster. Select the unique or classification options to generate a new reclassification. When using the Reclassify tool as part of a model. Remove all remap records using the erase option and manually add the new values. The Remap object is used to specify how to reclassify values of the input raster. When the input raster is a layer from Contents, the default reclassification table will import the unique values or classified break values as specified by the layer symbology. For example, if two ranges are specified, such as reclassifying values 1 to 5 as 100 and values 5 to 10 as 200, an input value less than or equal to 5 will be assigned the value 100 in the output, and an input value that is larger than 5, such as 5.01, will be assigned to 200. To use fewer cores, use the parallelProcessingFactor environment setting. A remap list that defines how the values will be reclassified. The Remap object is used to specify how to reclassify values of the input raster. The Remap object is used to specify how to reclassify values of the input raster. Either ranges of input values can be assigned to a new output value, or individual values can be assigned to a new output value. If the input to the tool is derived data from a tool that isn't already run, the remap parameter in the. Each row in the remap list is separated by a semicolon, and the three components are separated by spaces. This is the default. Select the unique or classification options to generate a new reclassification. Remove all remap records using the erase option and manually add the new values. Denotes whether missing values in the reclass table retain their value or get mapped to NoData. For example, if two ranges are specified, such as reclassifying values 1 to 5 as 100 and values 5 to 10 as 200, an input value less than or equal to 5 will be assigned the value 100 in the output, and an input value that is larger than 5, such as 5.01, will be assigned to 200. Basic: Requires Spatial Analyst or 3D Analyst, Standard: Requires Spatial Analyst or 3D Analyst, Advanced: Requires Spatial Analyst or 3D Analyst. If the reclassification is not suitable for the new raster, a new reclassification can be reinitialized by one of the following methods.

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