Int function

Available with Image Analyst license.

Available with Spatial Analyst license.

Overview

Converts each pixel value of a raster to an integer by truncation.

Notes

The input values can be positive or negative.

If rounding is preferred to truncating, add a 0.5 input raster prior to performing the operation.

There is a difference between the Int function and the Round Down function. For example, given the following two values, Int always truncates the number:

• 1.5 becomes 1
• -1.5 becomes -1

while for the same two values, Round Down returns the following:

• 1.5 becomes 1.0
• -1.5 becomes -2.0.

Another difference is that Round Down outputs floating-point values, while Int only outputs integer values.

Storing categorical (discrete) data as an integer raster will use significantly less disk space than the same information stored as a floating-point raster. Whenever possible, it is recommended to convert floating-point rasters to integer with this function.

If the input is a multiband raster, the output will be a multiband raster. The function will perform the operation on each band in the input.

If the input is a multidimensional raster, all slices from all variables will be processed, and the output will be a multidimensional raster.

Parameters

Parameter name	Description
Raster	The input raster to be converted to integer.
Extent Type	Choose which extent should be used in the output raster: First Of—Use the extent of the first input raster to determine the processing extent. Intersection Of—Use the extent of the overlapping pixels to determine the processing extent. This is the default. Union Of—Use the extent of all the rasters to determine the processing extent. Last Of—Use the extent of the last input raster to determine the processing extent.
Cellsize Type	Choose which cell size to use in the output raster. If all the input cell sizes are the same, all the options will yield the same results. First Of—Use the first cell size of the input rasters. Min Of—Use the smallest cell size of all the input rasters. Max Of—Use the largest cell size of all the input rasters. This is the default. Mean Of—Use the mean cell size of all the input rasters. Last Of—Use the last cell size of the input rasters.