[GRASS-dev] OSGeo-SoC 2016 application

[Yang, Bo (yangb2)]

Hello,
My name is Bo Yang, a Ph. D. student in the Department of Geography, University 
of Cincinnati.  I have a bachelor degree in Mathematics and MS in Computer 
Science. I am proficient in Python, C/C++, R and have utilized QGIS and GRASS a 
lot in my study and research project. I am really interested in OSGeo-SoC2016. 
It would be a great opportunity if I can make contributions as well as learn to 
become an open-source developer.
For years I have worked with raster processing algorithms and computation 
efficiency, for example, coding (python) to process large volume of remote 
sensing data, therefore I am interested in the existing idea:
GRASS: Additional segmentation algorithms for i.segment.
In addition, I have an idea based on my MA thesis project:
Spatio-temporal fusion of multi-scale data with in a cokriging framework.
This project extends traditional cokriging method for blending spatial data 
sets with different temporal sampling frequency and spatial resolution 
(density). It can be used for both raster data and vector data, effectively 
fill in data gaps due to severe weather condition, instrument malfunction, or 
other reasons, filtering out data noise, and generate reliable results at both 
high spatial resolution and high temporal frequency with associated uncertainty 
estimates.
It would be greatly appreciated if someone interested in my idea and could 
guide me how to get start and prepare the proposal. Thanks for your time and I 
am looking forward to hearing from you.
Best regards,
Bo Yang
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[GRASS-dev] Interest in contributing

[Djimeli Konrad]

Hello,

My name is Djimeli Konrad a second year computer science student from
the University of Buea, Cameroon. I am proficient in c, c++ and
python. I would like to contribute GRASS GIS for the Google Summer of
Code 2016. I am interested in working on the project "v.in.osm
enhancement". I have previous experience developing a VRML-STL parser
hosted on github ( https://github.com/djkonro/vrml-stl ) and also an
X3D importer for BRL-CAD GSoC 2015. I would like to get some pointer
to some starting point that could give me a better understanding of
the project.

Thanks
Konrad
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[GRASS-dev] [GRASS GIS] #2964: G7: v.extract does not remove islands

[GRASS GIS]

#2964: G7: v.extract does not remove islands
---+-
 Reporter:  sbl|  Owner:  grass-dev@…
 Type:  defect | Status:  new
 Priority:  normal |  Milestone:  7.0.4
Component:  Vector |Version:  7.0.3
 Keywords:  v.extract,islands  |CPU:  Unspecified
 Platform:  All|
---+-
 v.extract in GRASS 7.0.3 (and trunk too I guess) does not remove islands
 from areas.

 This problem has been reported on the mailinglist earlier (for earlier
 versions): [[BR]]

 https://lists.osgeo.org/pipermail/grass-user/2014-June/070503.html [[BR]]

 https://lists.osgeo.org/pipermail/grass-user/2008-May/044906.html [[BR]]

 https://lists.osgeo.org/pipermail/grass-user/2006-May/034301.html [[BR]]

 https://lists.osgeo.org/pipermail/grass-dev/2004-May/014602.html [[BR]]


 A test using the North Carolina data set illustrates it. Both the
 following v.extract commands are - according to the manual - supposed to
 remove islands. However, islands are still present in the results:

 {{{
 # Create a vector map with islands
 v.extract input=soils_general@PERMANENT cats=222 output=map_with_islands

 # From the Manual
 v.extract input=map_with_islands output=maps_without_islands cats=1-9
 # and/or
 v.extract -d in=map_with_islands out=maps_without_islands
 }}}

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[GRASS-dev] raster query/r.what error with a r.external-linked raster

[Helmut Kudrnovsky]

hi,

I have a self compiled:

System Info 
GRASS Version: 7.1.svn  
GRASS SVN revision: 68037   
Build date: 2016-03-11  
Build platform: x86_64-pc-linux-gnu 
GDAL: 2.0.2 
PROJ.4: 4.8.0   
GEOS: 3.4.2 
SQLite: 3.8.7.1 
Python: 2.7.9   
wxPython: 3.0.1.1   
Platform: Linux-3.16.0-4-amd64-x86_64-with-debian-8.3   

-

raster is linked:

r.info map=EUD_CP_DEMS_3500025000_AA@demdata

++
 | Map:  EUD_CP_DEMS_3500025000_AA@dem  Date: Sun Mar 13 01:10:35 2016   
|
 | Mapset:   demdataLogin of Creator: bugs   
|
 | Location: eudem_epsg3035  
|
 | DataBase: /home/bugs/grassdata
|
 | Title: ( EUD_CP_DEMS_3500025000_AA )  
|
 | Timestamp: none   
|

||
 |   
|
 |   Type of Map:  raster   Number of Categories: 0  
|
 |   Data Type:FCELL 
|
 |   Rows: 4 
|
 |   Columns:  4 
|
 |   Total Cells:  16
|
 |Projection: Lambert Azimuthal Equal Area   
|
 |N:300S:200   Res:25
|
 |E:400W:300   Res:25
|
 |   Range of data:min = -33.27055  max = 3385.91
|
 |   
|
 |   Data Description:   
|
 |generated by r.external
|
 |   
|
 |   Comments:   
|
 |r.external input="/home/bugs/gisdata/eudem/EUD_CP-DEMS_3500025000-AA\  
|
 |/EUD_CP-DEMS_3500025000-AA.tif" output="EUD_CP_DEMS_3500025000_AA" 
|
 |   
|

++

when I do a raster query in the map display, I get:

-
Traceback (most recent call last):
  File "/home/bugs/dev/cpp/grass7_trunk/dist.x86_64-pc-
linux-gnu/gui/wxpython/mapwin/buffered.py", line 1236, in
MouseActions

self.OnLeftUp(event)
  File "/home/bugs/dev/cpp/grass7_trunk/dist.x86_64-pc-
linux-gnu/gui/wxpython/mapwin/buffered.py", line 1413, in
OnLeftUp

self.mapQueried.emit(x=self.mouse['end'][0],
y=self.mouse['end'][1])
  File "/home/bugs/dev/cpp/grass7_trunk/dist.x86_64-pc-
linux-gnu/etc/python/grass/pydispatch/signal.py", line 229,
in emit

dispatcher.send(signal=self, *args, **kwargs)
  File "/home/bugs/dev/cpp/grass7_trunk/dist.x86_64-pc-
linux-gnu/etc/python/grass/pydispatch/dispatcher.py", line
349, in send

**named
  File "/home/bugs/dev/cpp/grass7_trunk/dist.x86_64-pc-
linux-gnu/etc/python/grass/pydispatch/robustapply.py", line
60, in robustApply

return receiver(*arguments, **named)
  File "/home/bugs/dev/cpp/grass7_trunk/dist.x86_64-pc-
linux-gnu/gui/wxpython/mapdisp/frame.py", line 870, in Query

self.QueryMap(east, north, qdist, rast, vect)
  File "/home/bugs/dev/cpp/grass7_trunk/dist.x86_64-pc-
linux-gnu/gui/wxpython/mapdisp/frame.py", line 907, in
QueryMap

localized=True)
  File "/home/bugs/dev/cpp/grass7_trunk/dist.x86_64-pc-
linux-gnu/etc/python/grass/script/raster.py", line 186, in
raster_what

env=env)
  File "/home/bugs/dev/cpp/grass7_trunk/dist.x86_64-pc-
linux-gnu/etc/python/grass/script/core.py", line 461, in
read_command

return handle_errors(returncode, stdout, args, kwargs)
  File "/home/bugs/dev/cpp/grass7_trunk/dist.x86_64-pc-
linux-gnu/etc/python/grass/script/core.py", line 329, in
handle_errors

returncode=returncode)
grass.exceptions
.

Re: [GRASS-dev] [GRASS GIS] #2944: g.gui.gmodeler - strange duplicity when setting comment

[GRASS GIS]

#2944: g.gui.gmodeler - strange duplicity when setting comment
+-
  Reporter:  lfurtkevicova  |  Owner:  martinl
  Type:  enhancement| Status:  assigned
  Priority:  minor  |  Milestone:  7.0.4
 Component:  wxGUI  |Version:  svn-trunk
Resolution: |   Keywords:  g.gui.gmodeler, Set Comment
   CPU:  x86-64 |   Platform:  Linux
+-

Comment (by lfurtkevicova):

 It is fixed, thanks, backport if needed ..

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Re: [GRASS-dev] [GRASS GIS] #2909: g.gui.gmodeler - all layers rewritten by last output for more than one parameter

[GRASS GIS]

#2909: g.gui.gmodeler - all layers rewritten by last output for more than one
parameter
+-
  Reporter:  lfurtkevicova  |  Owner:  martinl
  Type:  defect | Status:  assigned
  Priority:  normal |  Milestone:  7.0.4
 Component:  wxGUI  |Version:  svn-trunk
Resolution: |   Keywords:  gmodeler
   CPU:  Unspecified|   Platform:  Unspecified
+-

Comment (by lfurtkevicova):

 works for me, please backport if needed!

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