Hi, My solution was to export the relevant image and stream network to Google Earth, draw lines there, import the KML of the lines, and use them to raise/lower the raster. GE is a fairly good interface for drawing vector lines.
I'm switching to Linux soon so in the future I may do this entirely in GRASS. Thanks, -k. On Sun, Aug 20, 2017 at 10:48 PM, Anna Petrášová <[email protected]> wrote: > On Sun, Aug 20, 2017 at 12:32 PM, Helmut Kudrnovsky <[email protected]> wrote: > > Ken Mankoff wrote > >> I nowe select a map from the dropdown, set the "Cell value:" to 9999, > >> "Width:" to 30 (the resolution of the map), and select the point option, > >> click 3x (3 green "+"'s appear), and then save the raster. If I then > >> inspect it with "r.info", it appears to be a new raster created by this > >> tool (based on the "Comments" section), but the max is not 9999: > >> > >>> r.info DEM > >> > >> +----------------------------------------------------------- > -----------------+ > >> | Range of data: min = 341 max = 589 > >> | > >> | > >> | > >> | Data Description: > >> | > >> | generated by r.patch > >> | > >> | > >> | > >> | Comments: > >> | > >> | r.patch --overwrite --quiet input="xceebb34b,DEM_ > backupcopy_10405" > >> o\ > >> | > >> | utput="DEM@DEM" > >> | > >> > >> +----------------------------------------------------------- > -----------------+ > >> > >> If I repeat with the area tool instead of the point tool, and select > >> ~10x10 > >> area on a small raster (the region is only 80x50), when I save it it > says > >> "rasterizing..." for ~10 minutes and nothing appears to be happening. > > > > now tested it with > > > > System Info > > GRASS version: 7.3.svn > > GRASS SVN revision: r71404 > > Build date: 2017-08-15 > > Build platform: i386-w64-mingw32 > > GDAL: 2.2.1 > > PROJ.4: 4.9.3 > > GEOS: 3.5.0 > > SQLite: 3.17.0 > > Python: 2.7.4 > > wxPython: 2.8.12.1 > > Platform: Windows-Vista-6.0.6002-SP2 (OSGeo4W) > > > > on a very old windows box with the NC sample data set > > > > g.region -p -a raster=elevation@PERMANENT align=elevation@PERMANENT > > r.surf.random output=rrandom > > > > r.info map=rrandom@user1 > > Range of data: min = 1.65429668186334e-005 max = 99.9999642372131 > > > > after editing with cell value 9999 in the wxGUI > > > > r.info map=rrandom@user1 > > Range of data: min = 1.65429668186334e-005 max = 99.9999642372131 > > r.patch --overwrite --quiet input="x6cd2d029,rrandom_backupcopy_2220" > > output="rrandom@user1" > > > > I've experienced the same behaviour like you at the first step. > > > > but in a second test: > > > > r.info map=rrandom@user1 > > Range of data: min = 1.65429668186334e-005 max = 888888888 > > r.patch --overwrite --quiet input="x0738b000,rrandom_backupcopy_2220\" > > output="rrandom@user1" > > > > it seems to be a chronological matter of when you enter the cell value > and > > press the area/line/point button. > > > > it works, at least here, when I enter first the cell value, than choose > > area/line/point button, and then beginn to edit. > > > > > > Hi, > > yes, you first select the value you want to change and then draw > polygons/lines/points and right click to confirm. The width is useful > mostly for drawing lines and points. The rasterization process can > take little bit more time than one would expect, because it calls > r.in.poly several times, but at least it should be more stable than > the vector digitizer (not crashing the gui), because it doesn't use > ctypes. It works actually quite well if you know how to use it but I > unfortunately haven't added the manual yet... Will try to fix that. > It should work on Linux and Windows, I know about the problem on Mac, > but it was not super easy to fix when I looked at it some time ago. > > > > Anna > > > > > ----- > > best regards > > Helmut > > -- > > View this message in context: http://osgeo-org.1560.x6. > nabble.com/d-rast-edit-with-multiple-maps-tp5331874p5331935.html > > Sent from the Grass - Users mailing list archive at Nabble.com. > > _______________________________________________ > > grass-user mailing list > > [email protected] > > https://lists.osgeo.org/mailman/listinfo/grass-user > _______________________________________________ > grass-user mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/grass-user >
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