Hi, Re: patch for src/Lib/DEM/dem.cxx
>> using the DEM data available from >> http://geobase.ca/geobase/en/data/cded/index.html, >> which has a resolution of about 30m... These great ASCII DEM files have a resolution of 0.75 arcsecs, and unfortunately libDEM had been coded for _ONLY_ integer col_step and row_step in the output stage... This requires a minor changes in dem.cxx :- The lines :- fprintf( fp, "%d %d %d %d\n", span_x + 1, (int)col_step, span_y + 1, (int)row_step ); Need to be changed to :- fprintf( fp, "%d %f %d %f\n", span_x + 1, col_step, span_y + 1, row_step ); Note, col_step, and row_step are already read in, and maintained as doubles, so no other change is required. The attached patch does the job ;=)) Then demchop will correctly output the <index>.arr.gz files... Some quick images show the 'profound' effect ;=)) http://geoffair.net/tmp/newscenery.htm#success3 I would respectfully request this patch be applied to the terragear repository... Regards, Geoff. PS: I tried to put a newline in the commit message, using $ git commit -m "msg\n\nwith new line" ... but obviously this is NOT done by using \n ;=)) will learn how someday... if anybody can help... attached: 0001-Allow-non-integer-steps-n-nFor-ASCII-DEM-with-say-0.patch
0001-Allow-non-integer-steps-n-nFor-ASCII-DEM-with-say-0.patch
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