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esri/arcgis
esri/dijit
esri/dijit/analysis
esri/dijit/geoenrichment
esri/dijit/geoenrichment/ReportPlayer
esri/geometry
esri/layers
esri/renderers
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Class: GeographicTransformationStep
[ AMD Module Require | Legacy Module Require ]
require(["esri/geometry/GeographicTransformationStep"], function(GeographicTransformationStep) { /* code goes here */ });
Description
(Added at v3.24)
Represents a step in the process of transforming coordinates from one geographic coordinate system to another. A geographic transformation step can be constructed from a well-known ID (wkid) or a well known text (wkt).Samples
Search for samples that use this class.Constructors
| Name | Summary |
|---|---|
| new GeographicTransformationStep(params?) | Creates a new GeographicTransformationStep object. |
Properties
| Name | Type | Summary |
|---|---|---|
| isInverse | Boolean | Indicates whether the geographic transformation is inverted. |
| wkid | Number | The well-known id (wkid) that represents a known geographic transformation. |
| wkt | String | The well-known text (wkt) hat represents a known geographic transformation. See Geographic datum transformations for the list of supported equation-based geographic transformations. |
Methods
| Name | Return type | Summary |
|---|---|---|
| getInverse() | GeographicTransformationStep | Returns the inverse of the geographic transformation calling this method or null if the transformation is not invertible. |
Constructor Details
Creates a new GeographicTransformationStep object.
Parameters:
< |
Optional | See the params table for additional information. |
params properties: < |
Optional | The well-known id (wkid) that represents a known geographic transformation. See Geographic datum transformations for the list of supported equation-based geographic transformations. |
< |
Optional | The well-known text (wkt) that represents a known geographic transformation. See Geographic datum transformations for the list of supported equation-based geographic transformations. |
Sample:
require([
"esri/geometry/projection",
"esri/geometry/GeographicTransformation"
"esri/geometry/GeographicTransformationStep",
], function(projection,
GeographicTransformation,
GeographicTransformationStep) {
var step = new GeographicTransformationStep({
wkid: 54044
});
var datum = new GeographicTransformation({
steps: [step]
});
});
Property Details
<Boolean
BooleanIndicates whether the geographic transformation is inverted.
<Number
NumberThe well-known id (wkid) that represents a known geographic transformation.
See Geographic datum transformations for the list of supported equation-based geographic transformations.
<String
StringThe well-known text (wkt) hat represents a known geographic transformation.
See Geographic datum transformations for the list of supported equation-based geographic transformations.
Method Details
Returns the inverse of the geographic transformation calling this method or
null if the transformation is not invertible. The inverse of a transformation converts coordinates using the same method and parameters, but in the opposite direction of the original object. For example if the original object represents the NAD_1983_HARN_To_NAD_1983_NSRS2007_1 transformation, then the inverse will transform from NAD 83 (NSRS 2007) to NAD 83 (HARN).Return type:
GeographicTransformationStep