[GRASS-dev] [GRASS-user] wxGUI raster digitizer available
neteler at osgeo.org
Wed Nov 19 12:31:14 PST 2014
On Tue, Nov 18, 2014 at 5:19 AM, Anna Petrášová <kratochanna at gmail.com> wrote:
> Hi all,
> I added raster digitizer in r62792 in trunk.
what a great job!
If you didn't find it: it is in the "Map Display" windows, then
selector on the right side (2D/3D/Vector digitizer/Raster digitizer).
> You are welcome to test it and
> report bugs/enhancements.
> It currently allows to draw areas, lines and points and specify width to
> buffer individual features. We can discuss some changes in gui interface and
> behavior if you find the current one intuitive. There is still a lot to
> improve especially in the drawing part (needs some refactoring of the old
> drawing code).
One general thing I found (also valid for the vector digitizer): I
wonder where to put a message what the mouse buttons mean.
Maybe in the status bar at bottom of the display/digitizer window?
> - draw area, line, point
> - specify buffer width for individual features to create for example
> circles, roads of certain width...
... maybe rename from "Width" to "Buffer width"? Otherwise it could be
confused with the drawing line width.
> - specify background map
... works (maybe have a button to optionally take computational region
from that map?)
> - simple undo
> - save button to save results during drawing
here I got an issue somewhere:
Exception in thread Thread-4:
Traceback (most recent call last):
File "/usr/lib64/python2.7/threading.py", line 811, in
linux-gnu/gui/wxpython/core/gthread.py", line 94, in run
ret = vars()['callable'](*args, **kwds)
linux-gnu/gui/wxpython/rdigit/controller.py", line 432, in
if item.GetPropertyVal('widthValue') and \
linux-gnu/gui/wxpython/mapwin/graphics.py", line 439, in
raise KeyError(_("Property does not exist: %s") %
KeyError: 'Property does not exist: widthValue'
> - keeps drawing order in the output raster map
> - change color of drawing
> - doesn't block gui when exporting raster (which can take some time)
> Does not support (yet?):
> - adding labels
> - interactive setting color of raster cells (not planned, there are other tools)
> - vector export/import
> Known issues:
> - r.in.poly supports only CELL (I just realized that, this must be changed)
(meanwhile you changed that already, thanks)
> - various small drawing issues
> - slow when exporting features with buffers (r.grow is slow, probably
> because it's a script)
Not sure but r.buffer would be appropriate/faster?
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