# Geometric

## サマリー

Creates a raster object by producing an orthorectified image using a sensor definition and terrain model.

## 説明

You can use this function when your raster data has rational polynomial coefficients.

The referenced raster dataset for the raster object is temporary. To make it permanent, you can call the raster object's save method.

## 構文

`Geometric (raster, {geodata_transforms}, {append_geodata_xform}, {z_factor}, {z_offset}, {constant_z}, {correct_geoid}, {tolerance}, {dem})`
 パラメーター 説明 データ タイプ raster The input raster. Raster geodata_transforms The transformation method for the geometric function. Transformation methods include Polynomial, Projective, or Identity.(デフォルト値は次のとおりです None) String append_geodata_xform Specifies whether to append the geodata transform to the input raster.True—The geodata transform will be appended to the input raster.False—The geodata transform will not be appended to the input raster.(デフォルト値は次のとおりです False) Boolean z_factor The z-factor value to rescale to meters, if the input elevation dataset uses vertical units other than meters.(デフォルト値は次のとおりです None) Double z_offset The base value to be added to the elevation values in the DEM. Use this argument to offset elevation values that do not start at sea level.(デフォルト値は次のとおりです None) Double constant_z A constant elevation value to use for the function.(デフォルト値は次のとおりです None) Double correct_geoid The geoid correction converts orthometric heights using a geoid before applying an orthorectification to your imagery.Most elevation datasets, such as USGS NED or ArcGIS Online World elevation, use orthometric heights, so it is necessary to select the Geoid correction for compatibility with satellite RPCs, which require ellipsoidal heights.True—Apply the geoid (EGM96) correction to the z-values.False—Do not apply the geoid correction to the z-values.(デフォルト値は次のとおりです False) Boolean tolerance The maximum tolerable error in the geometric function, given in number of pixels.(デフォルト値は次のとおりです None) Double dem The DEM used to orthorectify the raster dataset.(デフォルト値は次のとおりです None) Raster

 データ タイプ 説明 Raster The output raster.

## コードのサンプル

Geometric example

Orthorectifies a satellite image using a sensor model and a DEM.

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

# Set the local variables
raster = "C:/data/Image.JPG"
geodata_transforms = "Polynomial"
append_geodata_xform = True
z_factor = None
z_offset = None
constant_z = None
correct_geoid = False
tolerance = 2
dem = "C:/data/DEM.tif"

# Apply RegionGrow function
Orthorectified_raster = arcpy.ia.Geometric(raster, geodata_transforms, append_geodata_xform,
z_factor, z_offset, constant_z, correct_geoid,
tolerance, dem)

# Save the output
Orthorectified_raster.save("C:/arcpyExamples/outputs/Image_ortho.JPG")``````