How to get *.ldb and *.xyz by DEM data?

EFDC_Explorer
1

how to get *.ldb and *.xyz by DEM data?
thank you very much.

2

One approach is to use ArcGIS, where we can convert a DEM to XYZ file with the following two steps:
- Convert DEM to points using Conversion Tool (Raster to Point)
- Calculate coordinates with the Calculate Geometry function, then export to XYZ file

3

Note that EE7.0 can natively read some DEMs, such as the USGS BIL format for Digital Elevation Model (DEM). Some of the data file formats that EFDC_Explorer currently reads include:

DAT/TXT ASCII XYZ files with space, comma or tab delimited (Appendix B)
TB2/TP2 ASCII regular grid file (Appendix B)
P2D ASCII XYZ files grouped into polylines. Space, comma or tab delimited (see Appendix B)
2DM/3DM Surface Water Modeling System (SMS) mesh geometry file
PLT TecPlot formatted file
E00 ArcInfo Coverage Export file
BIL/DEM USGS BIL format for Digital Elevation Model (DEM)
GRD/ASC ArcInfo ASCII grid file