Select by Dimension (Multidimension)

Summary

Updates the netCDF layer display or netCDF table view based on the dimension value.

Usage

• Inputs for this tool can be created using the Make NetCDF Feature Layer, Make NetCDF Raster Layer, or Make NetCDF Table View tools.

• If a dimension is not specified, its value is set to the first value. The first value is considered the default value.

• Auxiliary coordinate variables are not listed in the Dimension Values parameter drop-down list and cannot be set as the value of this parameter in a script.

• The BY_INDEX option matches the input value with the position or index of a dimension value. The index is 1 based, that is, the position starts at 1.

• This tool updates the input. In ModelBuilder, an output variable appears that can chain the updated input as input to another tool in the model, but the tool does not produce a new output.

Syntax

SelectByDimension_md (in_layer_or_table, {dimension_values}, {value_selection_method})

Parameter	Explanation	Data Type
in_layer_or_table	The input netCDF raster layer, netCDF feature layer, or netCDF table view.	Raster Layer; Feature Layer; Table View
dimension_values [[dimension, {value}],...] (Optional)	A set of dimension–value pairs used to specify a slice of a multidimensional variable. dimension—A netCDF dimension. {value}—A value of the dimension to specify a slice of a multidimensional variable. A drop-down arrow will appear if the number of available values is less than or equal to 200.	Value Table
value_selection_method (Optional)	Specifies the dimension value selection method. BY_VALUE — The input value is matched with the actual dimension value. BY_INDEX — The input value is matched with the position or index of a dimension value. The index is 0 based, that is, the position starts at 0.	String

Code Sample

SelectByDimension example 1 (Python window)

Updates the layer based on the dimension value.

import arcpy
arcpy.SelectByDimension_md("rainfall",[["lat", 20]],"BY_VALUE")

SelectByDimension example 2 (stand-alone script)

Updates the layer based on the dimension value.

# Name: SelectBydimension_Ex_02.py
# Description: Updates the netCDF layer display based on the dimension value.
# Requirements: none

# Import system modules
import arcpy

# Set local variables
inNetCDFLayer = "rainfall" 
valueSelect01 = ["lat", 20]
valueSelect02 = ["lon", 45]  
dimensionValues = [valueSelect01, valueSelect02]
valueSelectionMethod = ""

# Execute SelectByDimension
arcpy.SelectByDimension_md(inNetCDFLayer, dimensionValues, valueSelectionMethod)

Environments

Current Workspace, Scratch Workspace

Licensing Information

ArcView: Yes

ArcEditor: Yes

ArcInfo: Yes