X-Git-Url: https://git.gag.com/?p=debian%2Fsplat;a=blobdiff_plain;f=utils%2FREADME;h=b74a9618d6d8a811e941f8e15e2341f492ed1414;hp=31a9c4d907399d3c61b2a74e29742cebe4b4811e;hb=dcc481697c227c3b265d1e68a8a82910c818332c;hpb=3504a1ce545f764f4e96a31fa53dbf498e0bd9f9 diff --git a/utils/README b/utils/README index 31a9c4d..b74a961 100644 --- a/utils/README +++ b/utils/README @@ -3,7 +3,7 @@ ================ Utilities for use with SPLAT! software are found under the -splat-1.1.1/utils directory. They include the following: +splat-1.2.1/utils directory. They include the following: srtm2sdf @@ -60,6 +60,34 @@ Some examples of srtm2sdf use: In all cases, SDF files are written into the current working directory. +The srtm2sdf utility may also be used to convert 3-arc second SRTM data +in Band Interleaved by Line (.BIL) format for use with SPLAT! This data +is available via the web at: http://seamless.usgs.gov/website/seamless/ + +Once the region of the world has been selected at this site, select the +"Define Download Area By Coordinates" button under "Downloads". Proceed +to request the download of the region(s) desired in 1 degree by 1 degree +regions only, and make sure bounding coordinates entered fall exactly on +whole numbers of latitude and longitude (no decimal fractions of a degree). + +Select the "Add Area" button at the bottom. + +On the next screen, select "Modify Data Request". On the subsequent screen, +de-select the National Elevation Dataset (NED) format and select "SRTM 3 arc +sec - Shuttle Radar Topography Mission [Finished]". Change the format from +ArcGrid to BIL, and from HTML to TXT. + +Select the "Save Changes and Return To Summary" button. + +Select the "Download" button, and save the file once it has been sent to +your web browser. + +Uncompressing the file will generate a directory containing all files +contained within the downloaded archive. Move into the directory and +invoke srtm2sdf as described above with the filename having the .bil +extension given as its argument. Finally, move or copy the generated +.sdf file to your SPLAT! working directory. + usgs2sdf ======== @@ -166,5 +194,5 @@ You need to be 'root' to install any or all of these utilities. --- John A. Magliacane, KD2BD -March 2006 +August 2007