Round Up (Image Analyst)

Available with Spatial Analyst license.

Summary

Returns the next higher integer value, just represented as a floating point, for each cell in a raster.

Illustration

OutRas = RoundUp(InRas1)

Usage

• Input values can be positive or negative.

• The output raster from this tool is always floating-point type, regardless of the input value type.

• If the input number has any values to the right of the decimal point, the output will be assigned the next higher integer value, but will be represented as a floating point number with no decimal portion. For example:

     Input   Output
      5.3     6.0
      4.9     5.0
      3.0     3.0
      6.5     7.0
     -0.2     0.0
     -2.8    -2.0

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

• If the input is multidimensional raster data, all slices from all variables will be processed. The output will be a multidimensional raster in CRF format.

Parameters

Dialog

Label	Explanation	Data Type
Input raster or constant value	The input values to be rounded up. To use a number as an input for this parameter, the cell size and extent must first be set in the environment.	Raster Layer; Constant

Return Value

Label	Explanation	Data Type
Output raster	The output raster. The cell values are the result of rounding up the input values.	Raster

Python

RoundUp(in_raster_or_constant)

Name	Explanation	Data Type
in_raster_or_constant	The input values to be rounded up. To use a number as an input for this parameter, the cell size and extent must first be set in the environment.	Raster Layer; Constant

Return Value

Name	Explanation	Data Type
out_raster	The output raster. The cell values are the result of rounding up the input values.	Raster

Code sample

RoundUp example 1 (Python window)

This example rounds the values in the input raster to the next higher integer value and outputs a floating-point raster.

import arcpy
from arcpy import env
from arcpy.ia import *
env.workspace = "C:/iapyexamples/data"
outRoundUp = RoundUp("gwhead")
outRoundUp.save("C:/iapyexamples/output/outru")

RoundUp example 2 (stand-alone script)

This example rounds the values in the input raster to the next higher integer value and outputs a floating-point raster.

# Name: RoundUp_Ex_02.py
# Description: Returns the next higher whole number for each pixel
#              in a raster
# Requirements: Image Analyst Extension

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

# Set environment settings
env.workspace = "C:/iapyexamples/data"

# Set local variables
inRaster = "gwhead"

# Check out the ArcGIS Image Analyst extension license
arcpy.CheckOutExtension("ImageAnalyst")

# Execute RoundUp
outRoundURaster = RoundUp(inRaster)

# Save the output 
outRoundURaster.save("C:/iapyexamples/output/outroundup")

Environments

Auto Commit, Cell Size, Cell Size Projection Method, Current Workspace, Extent, Geographic Transformations, Mask, Output CONFIG Keyword, Output Coordinate System, Scratch Workspace, Snap Raster, Tile Size