[SoC] Re: [GRASS-dev] SoC proposal

Helena Mitasova hmitaso at unity.ncsu.edu
Tue Apr 5 11:40:48 EDT 2011

I can co-mentor as well - this could be another strong project by a student with excellent qualifications,
Martin can you please add it to the ideas page - perhaps under raster so that we have everything in one place?


On Apr 5, 2011, at 10:43 AM, Markus Metz wrote:

> On Tue, Apr 5, 2011 at 4:37 PM, Martin Landa <landa.martin at gmail.com> wrote:
>> Hi,
>> 2011/3/31 Margherita Di Leo <diregola at gmail.com>:
>>> I am willing to participate as student to GSoC with a GRASS GIS related
>>> project.
>>> I'm a third year PhD student and my main research interests lie in
>>> hydrological modeling coupled with GIS.
>>> My idea is the following: recently, in GRASS GIS new modules suitable for
>>> hydrological analysis have been developed, r.stream*. I tested it and found
>>> very complete and useful, I currently use it for hydrological analysis and
>>> develop python scripts using it.
>>> My idea for GSoC is to develop a sophisticated Graphical User Interface in
>>> wxpython for r.stream*.
>>> GIMP users may know the Filter Pack, that allow to see the preview of the
>>> effects over an image. I imagine the r.stream* GUI something like that, in
>>> which it's possible to see rapidly on a small portion of the area of
>>> interest the result of the hydrological analysis, and then decide if apply
>>> the analysis or not.
>>> It will include "multiple previews". Every result can be saved as an image
>>> and set of parameters for future use in additional "preview windows", next
>>> choose from group of possible parameters that which is most suitable.
>>> Also, changing the extend of sample area will be available "on the fly".
>>> Parameters that shall to be shown are:
>>> * network (vector) + optionally (order + elementary basins +
>>> distance/elevation)
>>> Parameters to change:
>>> * threshold
>>> * Montgomery exponent
>>> * SFD treshold
>>> Optionally:
>>> * Flow accumulation map
>>> * Map of depressions
>>> The advantage of such a graphical interface is to allow the user to have a
>>> simple approach to a sophisticated thing like hydrology. Many hydrologists
>>> use other GIS suites because they simply don't know or don't know how to use
>>> r.stream*. I believe that such a GUI could improve the user approach to
>>> hydrological analysis in GRASS.
>>> My tentative of timeline is the following:
>>> 2 weeks: design interface based on other similar software
>>> 3 weeks - midterm goal: get a preview widget working in grass7
>>> 3 weeks: add functionality and documentation
>>> 1 week: testing
>>> final goal: working GUI for grass7
>> I could be co-mentor for this project (wxGUI part), anyone interested
>> to mentor this project from hydrological modeling point of view?
> I could co-mentor the hydrological component.
> Markus M
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