Export Voxel Isosurface (Multidimension Tools)

Summary

Exports one or more isosurfaces from a voxel layer, scene layer package, or netCDF file.

Usage

Exports one or more isosurfaces to a single output multipatch feature class or each isosurface as an individual multipatch feature class in a geodatabase.
Continuous variables populate the Isosurface Definition parameter dropdown. These variables are based on double or floating point numbers as defined in the netCDF file. Discrete variables are not provided in the dropdown.
The spatial reference of the output matches the input voxel layer.
You can only provide a value for one output parameter; you cannot specify an Output Feature Class and Target Workspace parameter value at the same time.
When specifying the Target Workspace parameter, the output feature classes do not have exaggeration applied by default. Adjust the vertical exaggeration in the Elevation page of the layer properties, when added to a local scene.
Exaggeration and color are applied when the Output Feature Class parameter is specified and the output is added to the active local scene.
Output fields added to the feature class include variable name, isosurface value, surface area, local time and source time for time enabled datasets.
Check the Enable Time Export parameter for datasets that contain a time dimension.
An empty output warning appears if isosurface values are empty for an isovalue or time value when time is enabled. Examine the attribute table in the output feature class to determine which object IDs are empty for a given value.
Use the time slider with the output feature class to visualize isosurface values across time.
Datasets with irregular Z spacing may not match exaggeration of voxel layer. The layer properties Source page contains information on a voxel layers Z dimension. A Regular or Irregular value will be listed for Interval. Use the regularize Z script tool to fix irregular Z values.

Label	Explanation	Data type
Input Dataset	The input voxel layer, voxel scene layer package, or netCDF file.	Voxel Layer; File; Layer File
Isosurface Definition	The continuous variables and matching isosurface values. Value table columns: Variable—The continuous variable. Isovalue—The isosurface value in double format.	Value Table
Enable Time Export (Optional)	Specifies whether all available time values or only the first time value will be exported to the output feature class. This option is available for datasets that include a time dimension. When this parameter is checked, the Target Workspace parameter is inactive. Checked—All available time values will be exported to the output feature class. Unchecked—Only the first time value will be exported to the output feature class. This is the default.	Boolean
Output Feature Class (Optional)	The output multipatch feature class containing one or more isosurfaces. Specify a value for this parameter when you want all isosurfaces in a single feature class.	Feature Class
Target Workspace (Optional)	The geodatabase containing multiple isosurfaces. Specify a value for this parameter when you want each isosurface as it's own feature class.	Workspace

Derived output

Label	Explanation	Data type
Updated Workspace	The geodatabase containing the output feature classes.	Workspace

arcpy.md.ExportVoxelIsosurface(in_dataset, isosurface_definition, {enable_time}, {out_feature_class}, {target_workspace})

Name	Explanation	Data type
in_dataset	The input voxel layer, voxel scene layer package, or netCDF file.	Voxel Layer; File; Layer File
isosurface_definition [isosurface_definition,...]	The continuous variables and matching isosurface values. Value table columns: `variable`—The continuous variable. `isovalue`—The isosurface value in double format.	Value Table
enable_time (Optional)	Specifies whether all available time values will be exported to the output feature class. This option is available for datasets that include a time dimension. When this parameter is set to `TIME_ENABLED`, the `target_workspace` parameter is active. `TIME_ENABLED`—All available time values will be exported to the output feature class. `TIME_DISABLED`—Only the first time value will be exported to the output feature class. This is the default.	Boolean
out_feature_class (Optional)	The output multipatch feature class containing one or more isosurfaces. Specify a value for this parameter when you want all isosurfaces in a single feature class.	Feature Class
target_workspace (Optional)	The geodatabase containing multiple isosurfaces. Specify a value for this parameter when you want each isosurface as it's own feature class.	Workspace

Derived output

Name	Explanation	Data type
updated_workspace	The geodatabase containing the output feature classes.	Workspace

Code sample

ExportVoxelIsosurface example 1 (Python window)

The following python script exports two isosurfaces to a single multipatch feature class.

import arcpy
arcpy.md.ExportVoxelIsosurface(
    in_dataset=r"C:\data\air_quality.nc",
    isosurface_definition="pm10 0.2;pm10 0.3",
    enable_time="TIME_DISABLED",
    out_feature_class=r"C:\data\isodata.gdb\air_quality_pm10",
    in_workspace=None
)

ExportVoxelIsosurface example 2 (Python window)

The following python script exports three isosurfaces as separate multipatch feature classes in a geodatabase.

import arcpy
arcpy.md.ExportVoxelIsosurface(
    in_dataset=r"C:\data\air_quality.nc",
    isosurface_definition="pm25 0.2;pm25 0.5;pm25 0.6",
    enable_time="TIME_DISABLED",
    out_feature_class=None,
    in_workspace=r"C:\data\isodata.gdb"
)

Environments

Parallel Processing Factor

Licensing information

Basic: Yes
Standard: Yes
Advanced: Yes

Export Voxel Isosurface (Multidimension Tools)

Summary

Usage

Parameters

Derived output

Environments

Licensing information

Related topics