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Editor to share with you how to obtain the regional elevation of TE7, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

In the update of the version of te7, the interface of QueryElevationBuffer has been added to the interface of Analysis. According to the description in the help document, this API can obtain the elevation in an area. Compared with the api development interface of te6, it is found that the interface of mass haul has been removed from te7. As previously explained, in te7pro, using the functional web page of mass haul analysis, it is found that the interface of QueryElevationBuffer has been replaced.

How to use the QueryElevationBuffer interface? the following is a simple CS version to use. For detailed use, you can go to te7pro's fill and excavation page for analysis.

Note: when using this interface, make sure that the terrain is opaque.

The parameters in the API are:

/ / the coordinates of the upper left corner of the map, that is, the starting point coordinates of the area to be obtained

Double UpperLeftX

Double UpperLeftY

/ / in the map coordinate system, the resolution of x and y units

Double ResX

Double ResY

/ / the pixel length and width of the raster image in the map, ranging from 512 to 2048

Int DimensionX

Int DimensionY)

/ / define the upper-left and lower-right coordinates of the range

Double _ upLeftX = 106.637950

Double _ upLeftY = 26.646355

Double _ boRightX = 106.642731

Double _ boRightY = 26.642131

/ / sets the length and width resolution of the grid on the map

Var gQuaryResolution = 1024

Var qualityStep = 4

/ / calculate the resolution moved by each cell according to the difference of the range

Var stepX = Math.Abs (_ boRightX-_ upLeftX) / gQuaryResolution

Var stepY = Math.Abs (_ upLeftY-_ boRightY) / gQuaryResolution

/ / according to the instructions of te7 on the web page, you need to call multiple times to ensure that the result is returned correctly.

Var _ tmpObj = _ sgworld.Analysis.QueryElevationBuffer (_ upLeftX, _ upLeftY, stepX, stepY, gQuaryResolution, gQuaryResolution)

_ tmpObj = _ sgworld.Analysis.QueryElevationBuffer (_ upLeftX, _ upLeftY, stepX, stepY, gQuaryResolution, gQuaryResolution)

/ / convert the obtained value to a C # array

Object [] _ redata = (object []) _ tmpObj

/ / cycle to correspond the coordinate points to the elevation values, so that you can get the slices.

For (int I = qualityStep / 2; I < gQuaryResolution; I = I + qualityStep)

{

For (int j = qualityStep / 2; j < gQuaryResolution; j = j + qualityStep)

{

Var x = _ upLeftX + I * stepX

Var y = _ upLeftY-j * stepY

Var altitue= _ redata [j * gQuaryResolution + I])

}

}

The efficiency of this method is relatively high, and the batch elevation values can be obtained quickly.

The above is all the contents of the article "how to obtain Regional elevation by TE7". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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