DEM data download
Login geospatial data in the cloud , navigate to Advanced Search , select the data set (SRTMDEM 90M resolution of the original elevation data), and set up the administrative retrieved.
DEM data registration
SRTM data downloaded * .img raster data block using QGIS load data, using Raster -> Miscellaneous -> Merge ... splicing tool, and saved as * .tif format.
DEM data slice
osgearth source projects included in the osgearth_package tool, this tool is used to cut DEM, DOM and form a pyramid. Also designated generation tms.xml.
osgearth_package file.earth --tms --out output_folder
osgearth_package out.earth --tms--max-level 10 --out D:\tms\
Parameter Description:
out.earth: The document contains a description of earth being cut data. Preferably description contains only data to be cut.
--tms: After cutting, generating tms.xml, for publishing the tms.
--max-level 20: cutting the number of the highest level. Maximum cutting 10 described herein, it is from 0 to 10.
--out: results generated storage path.
.earth File Description:
<map name="xinjiangdem" version="2">
<heightfield name = "xindem" driver = "gdal">
<url>xinjiangdem1.tif</url>
<tile_size>64</tile_size>
</heightfield>
</map>
The final results include the generation of data to be cut and tms.xml, easy release into tms service.
OsgEarth load elevation tms
<elevation driver="tms" name="dem" url="./xindem/tms.xml"> </elevation>
