Contents
How to use a variable created in ModelBuilder?
Variables created in ModelBuilder can be used by this tool, but variables desired for use in the expression parameter cannot be connected to the Calculate Value tool. To use them in the expression, enclose the variable name in percent signs ( % ).
How to calculate value in Python using ModelBuilder?
Returns a value based on a specified Python expression. This tool is intended for use in ModelBuilder, not in Python scripting. The Data Type parameter is used in ModelBuilder to help chain the output of the Calculate Value tool with other tools.
How is the data type parameter used in calculate value?
The Data Type parameter is used in ModelBuilder to help chain the output of the Calculate Value tool with other tools. For example, if you use the Calculate Value tool to calculate a distance for use as input to the Buffer Distance parameter of the Buffer tool, specify Linear Unit for the Data Type parameter.
How to calculate a value in a model?
If you are calculating a value in the model and want to use the calculated value with tools such as Buffer that require a buffer distance value as well as a linear unit you have to: set the data type parameter to linear unit so that the result of the expression will be converted to a linear unit value.
Can you access model variables from code block in Python?
In Python, part of syntax is proper indentation. Indentation level (two spaces or four spaces) does not matter as long as it is consistent throughout the code block. You cannot access model variables from the code block. Such variables must be passed to the code block from the expression.
When to use calculate value in ArcGIS Pro?
For example, if you use the Calculate Value tool to calculate a distance for use as input to the Buffer Distance parameter of the Buffer tool, specify Linear Unit for the Data Type parameter.
How to calculate random value from uniform distribution?
Calculate a random value derived from a uniform distribution of integers between 0 and 10: arcgis.rand (“Integer 0 10”) The expression arcgis.rand must be entered in lowercase characters.