How to load the contour CAD drawing of the engineering coordinate system obtained by the designer into the new earth

order ：

A friend got a copy CAD Format drawings , There are contour lines in it , Want to load it as a 3D terrain base map into the map new earth . Ask other colleagues to help with the transition , Colleagues use Arcgis Gave him an output tif Formatted terrain , But the actual inspection of this data shows that 【 image 】

Here is given cad Formatted data , Convert to tif Tutorial on format terrain , And in lsv Loading inside .

One 、GlobalMapper open CAD Drawing

Be careful ,GlobalMapper open CAD Be sure to know its corresponding projection file , After opening, the effect is as shown in the figure

notes ： The wrong projection was used at the beginning , The coordinate range is out of bounds , The data coordinates are marked

Two 、 Filter out the contour lines used to generate the terrain

The attribute table is shown in the following figure ：

 

  Screened out 2934 Contour lines

 ctrl+A Future generations , Right click replication

direct ctrl+V Paste

 

  3、 ... and 、 Generate contour lines

 

  Four 、 The range of the generated layer ：

 

 

 

  5、 ... and 、 Precisely crop the generated terrain by range

 

  6、 ... and 、 Output terrain

 

  7、 ... and 、 Figure New Earth loading generated tif

notes ： If the projection information is correct, you can directly load the terrain （ It is recommended to use terrain batch processing to lrp）

If the projection information is a local coordinate system , Please use 【 Import tif】 Configure the project coordinate system for import