GA Layer to Grid (Geostatistical Analyst)
Release 9.3 Last modified November 10, 2008	Print all topics in : "Tools"

Exports a Geostatistical layer to an ArcInfo GRID

Usage tips

• The output GRID will be created at the cell size specified by Output cell size.

• Select the number of predictions for each cell in the horizontal and vertical directions for block interpolation.

• For output data formats that support Null values, a Null value will be used to indicate that a prediction could not be made for that location. For output data formats that do not support Null values, a negative DBL_MAX = -1.7976931348623158e+308 value will be used to indicate that a prediction could not be made for that location.

• The following environment settings affect this tool:

  Current Workspace, Scratch Workspace, Output Extent, Output Coordinate System, and Cell Size.

Command line syntax
An overview of the Command Line window
GALayerToGrid_ga <in_geostat_layer> <out_surface_grid> {cell_size} {points_per_block_horz} {points_per_block_vert}

Parameter	Explanation	Data Type
<in_geostat_layer>	Input geostatistical layer	Geostatistical Layer
<out_surface_grid>	The ArcInfo GRID to be created	Raster Dataset
{cell_size}	The cell size at which the output GRID will be created	Analysis cell size
{points_per_block_horz}	The number of predictions for each cell in the horizontal direction for block interpolation	Long
{points_per_block_vert}	The number of predictions for each cell in the vertical direction for block interpolation	Long

Data types for geoprocessing tool parameters

Command line example

GALayerToGrid c:/data/idw.lyr c:/data/out_grid 2 1 1

Scripting syntax
About getting started with writing geoprocessing scripts
GALayerToGrid_ga (in_geostat_layer, out_surface_grid, cell_size, points_per_block_horz, points_per_block_vert)

Parameter	Explanation	Data Type
in_geostat_layer (Required)	Input geostatistical layer	Geostatistical Layer
out_surface_grid (Required)	The ArcInfo GRID to be created	Raster Dataset
cell_size (Optional)	The cell size at which the output GRID will be created	Analysis cell size
points_per_block_horz (Optional)	The number of predictions for each cell in the horizontal direction for block interpolation	Long
points_per_block_vert (Optional)	The number of predictions for each cell in the vertical direction for block interpolation	Long

Data types for geoprocessing tool parameters

Script example

# Purpose: Export a Geostatistical layer to a GRID.

# Create the Geoprocessor object.
import arcgisscripting
gp = arcgisscripting.create()

try:
    # Set the input GA layer.
    inputGALayer = "c:/data/Input/idw.lyr"

    # Set the output grid name.
    outputGrid = "out_grid" 

    # Set some of the parameters.
    cell_size = 2
    points_horiz = 1
    points_vert = 1

    # Check out GeoStatistical Analyst extension license.
    gp.CheckOutExtension("GeoStats")	

    # Process: GA Layer To Grid...
    gp.GALayerToGrid_ga (inputGALayer, outputGrid, cell_size, points_horiz, points_vert)

except:
    # If an error occurred while running a tool, then print the messages.
    print gp.GetMessages()	

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