[GRASS-dev] Re: [GRASS-GUI] how i can change the watershed analysis technique?

Mohammed Rashad mohammedrashadkm at gmail.com
Tue Nov 15 11:16:17 EST 2011 

IMHO for development it is better to have a Linux or Unix environment. so
that you can compile from source modify code again recompile and follow the
chain. In windows you have msys shell but you need to do a lot to setup an
environment.

so switch to *NIX and come back. please dont start os or distro wars. dont
ask the list to recommend an OS or linux distro. please...

On Tue, Nov 15, 2011 at 12:23 PM, Sandip Maity <sandip.stesalit at gmail.com>wrote:

> Dear frnd,
>
> Thanks for your reply.
>
> But i am using grass 6.5 -wxpython in windows. I cant able to run
> r.watershed.
>
> Please tell me "how can i get grass shell?"
>
> please help me.
>
> Sandip
>
>
>
>
> On Mon, Nov 14, 2011 at 7:17 PM, Mohammed Rashad <
> mohammedrashadkm at gmail.com> wrote:
>
>> you run from grass shell
>> r.watershed --interface-description 2> gui.xml
>> open gui.xml in an text editor. parse the xml using some xml parsers i
>> use pugixml and then create your own gui.
>> you can also make a standalone application if you link your application
>> with libgrass* libraries
>>
>> please see below your required xml output genreated by r.watershed
>>  <?xml version="1.0" encoding="UTF-8"?>
>> <!DOCTYPE task SYSTEM "grass-interface.dtd">
>> <task name="r.watershed">
>> <description>
>> Watershed basin analysis program.
>> </description>
>> <keywords>
>> raster
>> </keywords>
>> <parameter name="elevation" type="string" required="yes" multiple="no">
>> <description>
>> Input map: elevation on which entire analysis is based
>> </description>
>> <keydesc>
>> <item order="1">name</item>
>> </keydesc>
>> <gisprompt age="old" element="cell" prompt="raster" />
>> <guisection>
>> Input_options
>> </guisection>
>> </parameter>
>> <parameter name="depression" type="string" required="no" multiple="no">
>> <description>
>> Input map: locations of real depressions
>> </description>
>> <keydesc>
>> <item order="1">name</item>
>> </keydesc>
>> <gisprompt age="old" element="cell" prompt="raster" />
>> <guisection>
>> Input_options
>> </guisection>
>> </parameter>
>> <parameter name="flow" type="string" required="no" multiple="no">
>> <description>
>> Input map: amount of overland flow per cell
>> </description>
>> <keydesc>
>> <item order="1">name</item>
>> </keydesc>
>> <gisprompt age="old" element="cell" prompt="raster" />
>> <guisection>
>> Input_options
>> </guisection>
>> </parameter>
>> <parameter name="disturbed.land" type="string" required="no"
>> multiple="no">
>> <description>
>> Input map or value: percent of disturbed land, for USLE
>> </description>
>> <gisprompt age="old" element="cell" prompt="raster" />
>> <guisection>
>> Input_options
>> </guisection>
>> </parameter>
>> <parameter name="blocking" type="string" required="no" multiple="no">
>> <description>
>> Input map: terrain blocking overland surface flow, for USLE
>> </description>
>> <keydesc>
>> <item order="1">name</item>
>> </keydesc>
>> <gisprompt age="old" element="cell" prompt="raster" />
>> <guisection>
>> Input_options
>> </guisection>
>> </parameter>
>> <parameter name="accumulation" type="string" required="no" multiple="no">
>> <description>
>> Output map: number of cells that drain through each cell
>> </description>
>> <keydesc>
>> <item order="1">name</item>
>> </keydesc>
>> <gisprompt age="new" element="cell" prompt="raster" />
>> <guisection>
>> Output_options
>> </guisection>
>> </parameter>
>> <parameter name="drainage" type="string" required="no" multiple="no">
>> <description>
>> Output map: drainage direction
>> </description>
>> <keydesc>
>> <item order="1">name</item>
>> </keydesc>
>> <gisprompt age="new" element="cell" prompt="raster" />
>> <guisection>
>> Output_options
>> </guisection>
>> </parameter>
>> <parameter name="basin" type="string" required="no" multiple="no">
>> <description>
>> Output map: unique label for each watershed basin
>> </description>
>> <keydesc>
>> <item order="1">name</item>
>> </keydesc>
>> <gisprompt age="new" element="cell" prompt="raster" />
>> <guisection>
>> Output_options
>> </guisection>
>> </parameter>
>> <parameter name="stream" type="string" required="no" multiple="no">
>> <description>
>> Output map: stream segments
>> </description>
>> <keydesc>
>> <item order="1">name</item>
>> </keydesc>
>> <gisprompt age="new" element="cell" prompt="raster" />
>> <guisection>
>> Output_options
>> </guisection>
>> </parameter>
>> <parameter name="half.basin" type="string" required="no" multiple="no">
>> <description>
>> Output map: each half-basin is given a unique value
>> </description>
>> <keydesc>
>> <item order="1">name</item>
>> </keydesc>
>> <gisprompt age="new" element="cell" prompt="raster" />
>> <guisection>
>> Output_options
>> </guisection>
>> </parameter>
>> <parameter name="visual" type="string" required="no" multiple="no">
>> <description>
>> Output map: useful for visual display of results
>> </description>
>> <keydesc>
>> <item order="1">name</item>
>> </keydesc>
>> <gisprompt age="new" element="cell" prompt="raster" />
>> <guisection>
>> Output_options
>> </guisection>
>> </parameter>
>> <parameter name="length.slope" type="string" required="no" multiple="no">
>> <description>
>> Output map: slope length and steepness (LS) factor for USLE
>> </description>
>> <keydesc>
>> <item order="1">name</item>
>> </keydesc>
>> <gisprompt age="new" element="cell" prompt="raster" />
>> <guisection>
>> Output_options
>> </guisection>
>> </parameter>
>> <parameter name="slope.steepness" type="string" required="no"
>> multiple="no">
>> <description>
>> Output map: slope steepness (S) factor for USLE
>> </description>
>> <keydesc>
>> <item order="1">name</item>
>> </keydesc>
>> <gisprompt age="new" element="cell" prompt="raster" />
>> <guisection>
>> Output_options
>> </guisection>
>> </parameter>
>> <parameter name="threshold" type="integer" required="no" multiple="no">
>> <description>
>> Input value: minimum size of exterior watershed basin
>> </description>
>> <guisection>
>> Input_options
>> </guisection>
>> </parameter>
>> <parameter name="max.slope.length" type="float" required="no"
>> multiple="no">
>> <description>
>> Input value: maximum length of surface flow, for USLE
>> </description>
>> <guisection>
>> Input_options
>> </guisection>
>> </parameter>
>> <parameter name="convergence" type="integer" required="no" multiple="no">
>> <label>
>> Convergence factor for MFD (1-10)
>> </label>
>> <description>
>> 1 = most diverging flow, 10 = most converging flow. Recommended: 5
>> </description>
>> <default>
>> 5
>> </default>
>> </parameter>
>> <parameter name="memory" type="integer" required="no" multiple="no">
>> <description>
>> Maximum memory to be used with -m flag (in MB)
>> </description>
>> <default>
>> 300
>> </default>
>> </parameter>
>> <flag name="f">
>> <label>
>> Enable MFD flow (default is SFD (D8))
>> </label>
>> <description>
>> SFD: single flow direction, MFD: multiple flow direction
>> </description>
>> </flag>
>> <flag name="4">
>> <description>
>> Allow only horizontal and vertical flow of water
>> </description>
>> </flag>
>> <flag name="m">
>> <label>
>> Enable disk swap memory option: Operation is slow
>> </label>
>> <description>
>> Only needed if memory requirements exceed available RAM; see manual on
>> how to calculate memory requirements
>> </description>
>> </flag>
>> <flag name="a">
>> <label>
>> Use positive flow accumulation even for likely underestimates
>> </label>
>> <description>
>> See manual for a detailed description of flow accumulation output
>> </description>
>> </flag>
>> <flag name="overwrite">
>> <description>
>> Allow output files to overwrite existing files
>> </description>
>> </flag>
>> <flag name="verbose">
>> <description>
>> Verbose module output
>> </description>
>> </flag>
>> <flag name="quiet">
>> <description>
>> Quiet module output
>> </description>
>> </flag>
>> </task>
>>
>> On Mon, Nov 14, 2011 at 7:02 PM, Sandip Maity <sandip.stesalit at gmail.com>wrote:
>>
>>> Dear frnd,
>>>
>>> I want
>>> 1> to keep input option on required screen.
>>> 2> to keep only minimum size of exterior basis of input option.
>>> 3> to keep first and third parameter of output option.
>>> All are in first screen( with required screen) .
>>>
>>> please suggest me.
>>>
>>> thanks and regards.
>>>
>>> Sandip.
>>>
>>>
>>>
>>> On Mon, Nov 14, 2011 at 5:30 PM, Mohammed Rashad <
>>> mohammedrashadkm at gmail.com> wrote:
>>>
>>>> what are changes you are planing. pleasse be more secific
>>>> and dont be shy to ask on grass-dev
>>>>
>>>>
>>>> On Mon, Nov 14, 2011 at 5:27 PM, Sandip Maity <
>>>> sandip.stesalit at gmail.com> wrote:
>>>>
>>>>>
>>>>> Dear frnd
>>>>>
>>>>> I am planning to change in GUI  for watershed basin analysis.
>>>>>
>>>>> Actually the GUI asking to many datas. I want to fixed the parameter
>>>>> to make easy to handle.
>>>>>
>>>>> please help me.
>>>>>
>>>>> thanking for your suggetion and waiting for more suggetion.
>>>>>
>>>>> sandip
>>>>> On Mon, Nov 14, 2011 at 4:36 PM, Mohammed Rashad <
>>>>> mohammedrashadkm at gmail.com> wrote:
>>>>>
>>>>>> move to grass-dev ML.
>>>>>> gui is not very active now a days. and be specific when asking
>>>>>> questions
>>>>>> r.watershed is the module you are looking for...
>>>>>>
>>>>>> folder is raster/r.watershed . Its not gui in python its C code you
>>>>>> need to familiar with and in my opinion should swich to UNIX-like PC for
>>>>>> these work and its my own opnion.
>>>>>>
>>>>>> please dont start operating system wars!!!
>>>>>>
>>>>>> gui is gnerated from an xml format .Each grass module have
>>>>>> interface-description and based on that gui parsers will generate the form
>>>>>> structure. What changes are you planning to make.?
>>>>>>
>>>>>>   On Fri, Nov 11, 2011 at 5:06 PM, Sandip Maity <
>>>>>> sandip.stesalit at gmail.com> wrote:
>>>>>>
>>>>>>>   Dear sir,
>>>>>>>
>>>>>>> I want to modify the existing code of watershed analysis.
>>>>>>>
>>>>>>> Please tell me in which file or folder i should go for changing the
>>>>>>> code?
>>>>>>>
>>>>>>> I have to change some or modify the form structure.
>>>>>>>
>>>>>>> Please help me.
>>>>>>>
>>>>>>> regards.
>>>>>>>
>>>>>>> Sandip.
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> grass-gui mailing list
>>>>>>> grass-gui at lists.osgeo.org
>>>>>>> http://lists.osgeo.org/mailman/listinfo/grass-gui
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Regards,
>>>>>>    Mohammed Rashad K M
>>>>>>    M.S. (By Research) student
>>>>>>    Lab for Spatial Informatics
>>>>>>    Department of CSE
>>>>>>    International Institute of Information Technology
>>>>>>    Hyderabad, India
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Regards,
>>>>    Mohammed Rashad K M
>>>>    M.S. (By Research) student
>>>>    Lab for Spatial Informatics
>>>>    Department of CSE
>>>>    International Institute of Information Technology
>>>>    Hyderabad, India
>>>>
>>>>
>>>
>>
>>
>> --
>> Regards,
>>    Mohammed Rashad K M
>>    M.S. (By Research) student
>>    Lab for Spatial Informatics
>>    Department of CSE
>>    International Institute of Information Technology
>>    Hyderabad, India
>>
>>
>


-- 
Regards,
   Mohammed Rashad K M
   M.S. (By Research) student
   Lab for Spatial Informatics
   Department of CSE
   International Institute of Information Technology
   Hyderabad, India
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