[GRASS-user] d.rast.edit with multiple maps

[Ken Mankoff]

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 <kratochanna at gmail.com>
wrote:

> On Sun, Aug 20, 2017 at 12:32 PM, Helmut Kudrnovsky <hellik at web.de> 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 at 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 at PERMANENT align=elevation at PERMANENT
> > r.surf.random output=rrandom
> >
> > r.info map=rrandom at user1
> > Range of data:    min = 1.65429668186334e-005  max = 99.9999642372131
> >
> > after editing with cell value 9999 in the wxGUI
> >
> > r.info map=rrandom at user1
> > Range of data:    min = 1.65429668186334e-005  max = 99.9999642372131
> > r.patch --overwrite --quiet input="x6cd2d029,rrandom_backupcopy_2220"
> > output="rrandom at user1"
> >
> > I've experienced the same behaviour like you at the first step.
> >
> > but in a second test:
> >
> > r.info map=rrandom at user1
> > Range of data:    min = 1.65429668186334e-005  max = 888888888
> > r.patch --overwrite --quiet input="x0738b000,rrandom_backupcopy_2220\"
> > output="rrandom at 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.
> > _______________________________________________
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