John wrote: > I have an ascii file in .csv format containing x/y coordinates and z > values. Z column data represents geophysical data collected along > parallel lines (X and Y coordinates). I wish to display this data in a > format similar to an XY trace plot (see image example), where z data > recorded along individual traverses in the field can be displayed as a > raster image of parallel lines showing both negative and positive > responses along each line. So far I have imported small data sets using > both v.in.ascii and v.in.lines with also use of v.build.polylines but > the results only produce a single flat line. It is most likely I am not > going the right way about this, hence my query. I have searched the mail > archive in advance of this mail and found no relevant reference. Is it > possible to produce such a display with GRASS?
the module has not been written yet, but you might try importing it with r.in.xyz then interpolating with r.surf.nnbathy (addons) or one of the other r.surf.* or v.surf.* modules. maybe R has such a plotting tool already? Hamish ps- you might be interested in the v.in.p190 module from GRASS addons, and the v.in.mbsys_fnv addon module which can read SEG-Y tracks via MB-System. see http://grass.osgeo.org/wiki/Geophysics _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
