i am working on a project which is not commercial and i need some digital elevation data for visualization. in net i have found a link and i have downloaded .asc data from following link..
with arcmap in toolbox, Conversion Tools > To Raster > ASCII to Raster , with floating options i can convert it to what i want. but when i export it as tiff and taking info with gdalinfo i am getting no coordinate system information and three band (RGB)...
in normal dted2 file with gdalinfo i am getting this result with other coordinate info:
GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",6378137,298.257223563, AUTHORITY["EPSG","7030"]], AUTHORITY["EPSG","6326"]], PRIMEM["Greenwich",0], UNIT["degree",0.0174532925199433], AUTHORITY["EPSG","4326"]] Pixel Size = (0.000277777777778,-0.000277777777778) Image Structure Metadata: INTERLEAVE=BAND Band 1 Block=3601x1 Type=Int16, ColorInterp=Gray NoData Value=-32767 Unit Type: m
Can you help me how can i convert srtm asc data to dem or dted as below with arcmap or gdal? and is there any batch conversion for this?