How do you reclassify values in a raster?

How do you reclassify values in a raster?

Reclassifies (or changes) the values in a raster. The input raster must have valid statistics. If the statistics do not exist, they can be created using the Calculate Statistics tool in the Data Management Tools toolbox. If a range of values is to be reclassed, the ranges should not overlap except at the boundary of two input ranges.

How is the remap object used to reclassify values?

The Remap object is used to specify how to reclassify values of the input raster. There are two ways to define how the values will be reclassified in the output raster: RemapRange and RemapValue. Either ranges of input values can be assigned to a new output value, or individual values can be assigned to a new output value.

Is the output of reclassify always an integer?

The output reclassified raster. The output will always be of integer type. The following examples show several ways of reclassifying a raster. This example reclassifies the input raster based on the values in a string field. # Name: reclassify_example02.py # Description: Reclassifies the values in a raster.

How do you reclassify a field in ArcGIS?

Edit or select a field for the reclass field to invoke a new default reclassification. Select and delete the remap entries and manually add the new values. Select the unique or classification options to generate a new reclassification. This tool has a precision control that manages how decimal places are treated.

How many classes can a raster be classified in ArcGIS?

It is recommended to only load tables previously saved by the Reclassify tool. The table format is specific and must contain the fields FROM, TO, OUT, and MAPPING. By default, the input raster will be classified into nine classes for the reclassification table.

When to use NODATA or reclassify in ArcGIS?

This is the default. 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. The output reclassified raster. The output will always be of integer type.

Do you need Spatial Analyst License to reclassify raster?

Available with Spatial Analyst license. Reclassifies (or changes) the values in a raster. The input raster must have valid statistics. If the statistics do not exist, they can be created using the Calculate Statistics tool in the Data Management Tools toolbox.

How is the remap object used in reclassify?

Field denoting the values that will be reclassified. The Remap object is used to specify how to reclassify values of the input raster. There are two ways to define how the values will be reclassified in the output raster: RemapRange and RemapValue.

How to reclassify a range of values in ArcGIS?

If the statistics do not exist, they can be created using the Calculate Statistics tool in the Data Management Tools toolbox. If a range of values is to be reclassed, the ranges should not overlap except at the boundary of two input ranges.