[GRASS-user] Opensuse 13.1 Grass
Angelos Tzotsos
gcpp.kalxas at gmail.com
Sun Nov 30 03:17:20 PST 2014
I am guessing you use a more recent version of numpy, than the 13.1
default which is 1.7.
In numpy 1.9+ they dropped support for "numeric" and wxWidgets is
recently patched for it:
http://trac.wxwidgets.org/ticket/16590
On 11/30/2014 11:13 AM, Tim Southern wrote:
> Can confirm that Grass is apparently working under 13.1. Grass crashed trying to save a screen image from the Grass toolbar command. Rebooted ok.
>
> Thanks.
>
> Will try and install 13.2 again and try Grass. Why was Numpy incomplete?
>
> Kind regards
>
> Tim
> Tim Southern
> 17, Park Close,
> Sonning Common,
> Oxfordshire
> RG4 9RY
>
>
>
>> On 30 Nov 2014, at 05:02, grass-user-request at lists.osgeo.org wrote:
>>
>> Send grass-user mailing list submissions to
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>>
>> Today's Topics:
>>
>> 1. Re: Grass 6.4, Opensuse 13.1/13.2 (Angelos Tzotsos)
>> 2. mapping interface (shashank khare)
>> 3. Re: how to change all cats in a vector line
>> (C?sar Augusto Ram?rez Franco)
>> 4. Re: grass-user Digest, Vol 103, Issue 47 (Michael Barton)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Sun, 30 Nov 2014 05:16:07 +0200
>> From: Angelos Tzotsos <gcpp.kalxas at gmail.com>
>> To: grass-user at lists.osgeo.org
>> Subject: Re: [GRASS-user] Grass 6.4, Opensuse 13.1/13.2
>> Message-ID: <547A8BF7.3090306 at gmail.com>
>> Content-Type: text/plain; charset=windows-1252; format=flowed
>>
>> Problem fixed on both openSUSE 13.1 and 13.2
>> Can you please confirm?
>>
>> On 11/30/2014 01:43 AM, Angelos Tzotsos wrote:
>>> Hi Tim,
>>>
>>> I will have a look at this and report back.
>>>
>>> Cheers,
>>> Angelos
>>>
>>> On 11/29/2014 03:32 PM, Tim Southern wrote:
>>>> Dear all,
>>>>
>>>> A couple of weeks ago I made the mistake of upgrading Opensuse on
>>>> this 32 Toshiba Laptop to 13.2. Grass failed to work with error
>>>> messages indicating NumPy had not been installed. It had been
>>>> installed but did not contain the files Grass was looking for.
>>>> Attempts at removing and re-installing NumPy all produced the same
>>>> incomplete file set. (i586 installation)
>>>>
>>>> I have reverted to Opensuse 13.1 and now have another non working
>>>> version Grass 6.4
>>>>
>>>> Traceback (most recent call
>>>> GRASS 6.4.3 (South_Oxfordshire):~ > Traceback (most recent call last):
>>>> File "/opt/grass/etc/wxpython/wxgui.py", line 139, in <module>
>>>> sys.exit(main())
>>>> File "/opt/grass/etc/wxpython/wxgui.py", line 132, in main
>>>> app = GMApp(workspaceFile)
>>>> File "/opt/grass/etc/wxpython/wxgui.py", line 45, in __init__
>>>> wx.App.__init__(self, False)
>>>> File
>>>> "/usr/lib/python2.7/site-packages/wx-2.8-gtk2-unicode/wx/_core.py",
>>>> line 7981, in __init__
>>>> self._BootstrapApp()
>>>> File
>>>> "/usr/lib/python2.7/site-packages/wx-2.8-gtk2-unicode/wx/_core.py",
>>>> line 7555, in _BootstrapApp
>>>> return _core_.PyApp__BootstrapApp(*args, **kwargs)
>>>> File "/opt/grass/etc/wxpython/wxgui.py", line 78, in OnInit
>>>> workspace = self.workspaceFile)
>>>> File "/opt/grass/etc/wxpython/lmgr/frame.py", line 111, in __init__
>>>> self.toolbars = { 'workspace' : LMWorkspaceToolbar(parent = self),
>>>> File "/opt/grass/etc/wxpython/lmgr/toolbars.py", line 40, in __init__
>>>> self.InitToolbar(self._toolbarData())
>>>> File "/opt/grass/etc/wxpython/gui_core/toolbars.py", line 96, in
>>>> InitToolbar
>>>> self.CreateTool(*tool)
>>>> File "/opt/grass/etc/wxpython/gui_core/toolbars.py", line 120, in
>>>> CreateTool
>>>> shortHelp, longHelp)
>>>> File
>>>> "/usr/lib/python2.7/site-packages/wx-2.8-gtk2-unicode/wx/_controls.py",
>>>> line 3764, in AddLabelTool
>>>> shortHelp, longHelp, clientData)
>>>> File
>>>> "/usr/lib/python2.7/site-packages/wx-2.8-gtk2-unicode/wx/_controls.py",
>>>> line 3686, in DoAddTool
>>>> return _controls_.ToolBarBase_DoAddTool(*args, **kwargs)
>>>> ValueError: invalid null reference in method 'ToolBarBase_DoAddTool',
>>>> expected argument 4 of type 'wxBitmap const &'
>>>>
>>>> I am assuming both the errors in 13.2 and now in 13.1 are due to
>>>> installation issues. Grass 6.4 worked well in 13.1 until I
>>>> upgraded. Can anyone help?
>>>>
>>>> Thanks
>>>>
>>>> Tim
>>>> Tim Southern
>>>> 17, Park Close,
>>>> Sonning Common,
>>>> Oxfordshire
>>>> RG4 9RY
>>>>
>>>>
>>>>
>>>>> On 25 Nov 2014, at 20:00, grass-user-request at lists.osgeo.org wrote:
>>>>>
>>>>> Send grass-user mailing list submissions to
>>>>> grass-user at lists.osgeo.org
>>>>>
>>>>> To subscribe or unsubscribe via the World Wide Web, visit
>>>>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>>>> or, via email, send a message with subject or body 'help' to
>>>>> grass-user-request at lists.osgeo.org
>>>>>
>>>>> You can reach the person managing the list at
>>>>> grass-user-owner at lists.osgeo.org
>>>>>
>>>>> When replying, please edit your Subject line so it is more specific
>>>>> than "Re: Contents of grass-user digest..."
>>>>>
>>>>>
>>>>> Today's Topics:
>>>>>
>>>>> 1. Re: Computing major and minor axes for polygons (Benjamin Ducke)
>>>>> 2. Re: Computing major and minor axes for polygons (S?ren Gebbert)
>>>>> 3. Re: Computing major and minor axes for polygons (Nikos
>>>>> Alexandris)
>>>>>
>>>>>
>>>>> ----------------------------------------------------------------------
>>>>>
>>>>> Message: 1
>>>>> Date: Mon, 24 Nov 2014 22:50:46 +0100
>>>>> From: Benjamin Ducke <benducke at fastmail.fm>
>>>>> To: grass-user <grass-user at lists.osgeo.org>
>>>>> Subject: Re: [GRASS-user] Computing major and minor axes for polygons
>>>>> Message-ID: <5473A836.5030305 at fastmail.fm>
>>>>> Content-Type: text/plain; charset=utf-8
>>>>>
>>>>> Right, a PCA of the polygon vertices, I assume?
>>>>> Maybe "v.to.db" could be enhanced to allow it to upload
>>>>> the lengths of the first two/three components to the
>>>>> attribute table?
>>>>>
>>>>> For a quick fix, I solved the problem in a shell script using
>>>>> a crude approximation. FWIW:
>>>>> 0. Set major axis length=-1
>>>>> 1. Rotate polygon by 10? (v.transform)
>>>>> 2. Fit region to polygon (g.region vect=).
>>>>> 3. Get width of region. If it is greater than major axis length,
>>>>> set "major axis length = width"
>>>>> 4. Repeat from 1, until polygon has been rotated 350?
>>>>> 5. Minor axis length = height of current region.
>>>>>
>>>>> Like I said, it's just a crude approximation (precision can
>>>>> be increased by using smaller rotation steps) and slow, too.
>>>>> But it's good enough for my purposes, which is basically to
>>>>> calculate "elongation=len(major)/len(min)".
>>>>>
>>>>> Best,
>>>>>
>>>>> Ben
>>>>>
>>>>> On 24/11/14 19:27, S?ren Gebbert wrote:
>>>>>> IIRC is the code to compute the major and minor axes already in GRASS.
>>>>>> You need to perform a Karhunen-Loewe-Transformation for each Polygon.
>>>>>> This is also known as principal components analysis.
>>>>>>
>>>>>> Best regards
>>>>>> Soeren
>>>>>>
>>>>>> Am 21.11.2014 23:33 schrieb "Benjamin Ducke" <benducke at fastmail.fm
>>>>>> <mailto:benducke at fastmail.fm>>:
>>>>>>
>>>>>> Hi All --
>>>>>>
>>>>>> Does anybody here know of an existing GRASS modules that
>>>>>> will compute the major and minor axes for the polygons of
>>>>>> a vector map?
>>>>>>
>>>>>> Thanks and best,
>>>>>>
>>>>>> Ben
>>>>>> _______________________________________________
>>>>>> grass-user mailing list
>>>>>> grass-user at lists.osgeo.org <mailto:grass-user at lists.osgeo.org>
>>>>>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>>>>>
>>>>>
>>>>> --
>>>>> Dr. Benjamin Ducke
>>>>> {*} Geospatial Consultant
>>>>> {*} GIS Developer
>>>>>
>>>>> Spatial technology for the masses, not the classes:
>>>>> experience free and open source GIS at http://gvsigce.org
>>>>>
>>>>>
>>>>> ------------------------------
>>>>>
>>>>> Message: 2
>>>>> Date: Mon, 24 Nov 2014 23:44:29 +0100
>>>>> From: S?ren Gebbert <soerengebbert at googlemail.com>
>>>>> To: Benjamin Ducke <benducke at fastmail.fm>
>>>>> Cc: grass-user <grass-user at lists.osgeo.org>
>>>>> Subject: Re: [GRASS-user] Computing major and minor axes for polygons
>>>>> Message-ID:
>>>>> <CAPHDReJy+aLKPEZThfCd+8M935qGiLD1f-yNhrjemZ-s8RUmog at mail.gmail.com>
>>>>>
>>>>> Content-Type: text/plain; charset=UTF-8
>>>>>
>>>>> Hi Ben,
>>>>>
>>>>> 2014-11-24 22:50 GMT+01:00 Benjamin Ducke <benducke at fastmail.fm>:
>>>>>> Right, a PCA of the polygon vertices, I assume?
>>>>> Exactly, create a covariance matrix from the vertices coordinates of
>>>>> each polygon
>>>>> and compute the eigenvectors and eigenvalues of these matrices.
>>>>>
>>>>> Best regards
>>>>> Soeren
>>>>>
>>>>>> Maybe "v.to.db" could be enhanced to allow it to upload
>>>>>> the lengths of the first two/three components to the
>>>>>> attribute table?
>>>>>>
>>>>>> For a quick fix, I solved the problem in a shell script using
>>>>>> a crude approximation. FWIW:
>>>>>> 0. Set major axis length=-1
>>>>>> 1. Rotate polygon by 10? (v.transform)
>>>>>> 2. Fit region to polygon (g.region vect=).
>>>>>> 3. Get width of region. If it is greater than major axis length,
>>>>>> set "major axis length = width"
>>>>>> 4. Repeat from 1, until polygon has been rotated 350?
>>>>>> 5. Minor axis length = height of current region.
>>>>>>
>>>>>> Like I said, it's just a crude approximation (precision can
>>>>>> be increased by using smaller rotation steps) and slow, too.
>>>>>> But it's good enough for my purposes, which is basically to
>>>>>> calculate "elongation=len(major)/len(min)".
>>>>>>
>>>>>> Best,
>>>>>>
>>>>>> Ben
>>>>>>
>>>>>> On 24/11/14 19:27, S?ren Gebbert wrote:
>>>>>>> IIRC is the code to compute the major and minor axes already in
>>>>>>> GRASS.
>>>>>>> You need to perform a Karhunen-Loewe-Transformation for each Polygon.
>>>>>>> This is also known as principal components analysis.
>>>>>>>
>>>>>>> Best regards
>>>>>>> Soeren
>>>>>>>
>>>>>>> Am 21.11.2014 23:33 schrieb "Benjamin Ducke" <benducke at fastmail.fm
>>>>>>> <mailto:benducke at fastmail.fm>>:
>>>>>>>
>>>>>>> Hi All --
>>>>>>>
>>>>>>> Does anybody here know of an existing GRASS modules that
>>>>>>> will compute the major and minor axes for the polygons of
>>>>>>> a vector map?
>>>>>>>
>>>>>>> Thanks and best,
>>>>>>>
>>>>>>> Ben
>>>>>>> _______________________________________________
>>>>>>> grass-user mailing list
>>>>>>> grass-user at lists.osgeo.org <mailto:grass-user at lists.osgeo.org>
>>>>>>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>>>>>>
>>>>>>
>>>>>> --
>>>>>> Dr. Benjamin Ducke
>>>>>> {*} Geospatial Consultant
>>>>>> {*} GIS Developer
>>>>>>
>>>>>> Spatial technology for the masses, not the classes:
>>>>>> experience free and open source GIS at http://gvsigce.org
>>>>>> _______________________________________________
>>>>>> grass-user mailing list
>>>>>> grass-user at lists.osgeo.org
>>>>>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>>>> ------------------------------
>>>>>
>>>>> Message: 3
>>>>> Date: Tue, 25 Nov 2014 19:10:38 +0200
>>>>> From: Nikos Alexandris <nik at nikosalexandris.net>
>>>>> To: <grass-user at lists.osgeo.org>
>>>>> Subject: Re: [GRASS-user] Computing major and minor axes for polygons
>>>>> Message-ID: <5db8e3e250d0adde57c6a9628ba5611f at nikosalexandris.net>
>>>>> Content-Type: text/plain; charset=UTF-8; format=flowed
>>>>>
>>>>> On 24.11.2014 23:50, Benjamin Ducke wrote:
>>>>>> Right, a PCA of the polygon vertices, I assume?
>>>>>> Maybe "v.to.db" could be enhanced to allow it to upload
>>>>>> the lengths of the first two/three components to the
>>>>>> attribute table?
>>>>>>
>>>>>> For a quick fix, I solved the problem in a shell script using
>>>>>> a crude approximation. FWIW:
>>>>>> 0. Set major axis length=-1
>>>>>> 1. Rotate polygon by 10? (v.transform)
>>>>>> 2. Fit region to polygon (g.region vect=).
>>>>>> 3. Get width of region. If it is greater than major axis length,
>>>>>> set "major axis length = width"
>>>>>> 4. Repeat from 1, until polygon has been rotated 350?
>>>>>> 5. Minor axis length = height of current region.
>>>>> Wow, What a smart approach! :-)
>>>>>
>>>>> Nikos
>>>>>
>>>>>
>>>>> ------------------------------
>>>>>
>>>>> _______________________________________________
>>>>> grass-user mailing list
>>>>> grass-user at lists.osgeo.org
>>>>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>>>>
>>>>> End of grass-user Digest, Vol 103, Issue 42
>>>>> *******************************************
>>>>
>>>>
>>>> _______________________________________________
>>>> grass-user mailing list
>>>> grass-user at lists.osgeo.org
>>>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>>
>>
>> --
>> Angelos Tzotsos
>> Remote Sensing Laboratory
>> National Technical University of Athens
>> http://users.ntua.gr/tzotsos
>>
>>
>>
>> ------------------------------
>>
>> Message: 2
>> Date: Sun, 30 Nov 2014 03:46:54 +0000
>> From: shashank khare <skhare at hotmail.com>
>> To: "grass-user at lists.osgeo.org" <grass-user at lists.osgeo.org>
>> Subject: [GRASS-user] mapping interface
>> Message-ID: <BLU175-W24E2D4661F9FD9E586BF7CC97C0 at phx.gbl>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> I want to develop a mapping application using python for avalanche flow simulation which takes a lot of user inputs. I do not want to go through wxGUI as the user is not interested in options shown by its GUI. Is there any documentation about 2d/3d mapping interface classes/modules which I can use. If these are not documented I can help in it.
>> ThanksShash
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>>
>> ------------------------------
>>
>> Message: 3
>> Date: Sun, 30 Nov 2014 04:13:43 +0000
>> From: C?sar Augusto Ram?rez Franco <caesarivs at gmail.com>
>> To: GRASS User List <grass-user at lists.osgeo.org>
>> Subject: Re: [GRASS-user] how to change all cats in a vector line
>> Message-ID:
>> <CAJDYeikYbxrb3-w3ZSiiN3ufZoLzQRnQow+RjgD5=RZDs67XVw at mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Hello Michael
>>
>> You could use r.stream.order after r.stream.extract to get your stream
>> network ordered, and then, after running r.thin on the ordered stream
>> network, convert it to vector using r.to.vect with the -v flag, that way,
>> each order is a cat, you can them use v.to.points or the add-on suggested
>> below to get topologically-correct points along the stream network, you
>> could also use r.stream.distance and upload distance and elevation to each
>> point using v.what.rast
>>
>> I usually run R from within GRASS and use the spgrass6 library to read the
>> vector map and analyze the data there
>>
>> Regards
>>
>> C?sar.
>>
>> El s?b, 29 de noviembre de 2014 06:29 p.m., Helmut Kudrnovsky <hellik at web.de>
>> escribi?:
>>
>>> Michael Barton wrote
>>>> Hi Markus,
>>>>
>>>> What I'm trying to do is start with a raster stream map from r.drain and
>>>> convert it to a sequence of vector points, where each point has
>>>> information as to its position along the stream. I then use the points
>>> for
>>>> sampling a stream profile and related information. Oddly enough, with all
>>>> of the very useful stream analysis modules, there is nothing I could find
>>>> to generate the data for a stream profile (distance from outlet or from
>>>> headwaters vs. elevation).
>>>>
>>>> v.to.points does a nice job of creating a sequence of evenly spaced
>>> points
>>>> with information about their location along a line (the "along" field).
>>>> BUT, if the line is composed of multiple segments or even if it has an
>>>> irregularity in it, the "along" values start over again from 0. The only
>>>> way I can use it is if I have a very clean and continuous vector line
>>> with
>>>> only a single cat.
>>>>
>>>> This has proven surprisingly difficult to obtain reliably from my raster
>>>> stream map. So far, the only way has been to do a two sequences of
>>> v.clean
>>>> (with thresholds 1.5 X the raster resolution) and v.build.polylines. If
>>>> you have any better suggestion, I'd love to hear it.
>>>>
>>>> Thanks again for the polylines idea. That was a big help.
>>>>
>>>> Michael
>>>> ____________________
>>>> C. Michael Barton
>>>> Director, Center for Social Dynamics & Complexity
>>>> Professor of Anthropology, School of Human Evolution & Social Change
>>>> Head, Graduate Faculty in Complex Adaptive Systems Science
>>>> Arizona State University
>>>>
>>>> voice: 480-965-6262 (SHESC), 480-965-8130/727-9746 (CSDC)
>>>> fax: 480-965-7671 (SHESC), 480-727-0709 (CSDC)
>>>> www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu
>>>>
>>>>
>>>>
>>>>
>>>>> On Nov 29, 2014, at 10:20 AM, Michael Barton <
>>>> Michael.Barton@
>>>> > wrote:
>>>>> Thanks. This helped.
>>>>>
>>>>> Michael
>>>>> ____________________
>>>>> C. Michael Barton
>>>>> Director, Center for Social Dynamics & Complexity
>>>>> Professor of Anthropology, School of Human Evolution & Social Change
>>>>> Head, Graduate Faculty in Complex Adaptive Systems Science
>>>>> Arizona State University
>>>>>
>>>>> voice: 480-965-6262 (SHESC), 480-965-8130/727-9746 (CSDC)
>>>>> fax: 480-965-7671 (SHESC), 480-727-0709 (CSDC)
>>>>> www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> On Nov 29, 2014, at 1:23 AM, Markus Neteler <
>>>> neteler@
>>>> > wrote:
>>>>>> On Sat, Nov 29, 2014 at 6:16 AM, Michael Barton <
>>>> Michael.Barton@
>>>> > wrote:
>>>>>>> I have a vector line that is divided into 12 cat values. I?d like all
>>>>>>> of the
>>>>>>> line to have a single cat value. I?ve tried v.category to no avail. If
>>>>>>> I
>>>>>>> delete all categories and then add new categories, I get 12 cats
>>> again.
>>>>>>> And
>>>>>>> I can find no other way to get a single cat for the entire line.
>>>>>>> Hopefully
>>>>>>> someone can tell what I?m missing here.
>>>>>> Please try to use
>>>>>> http://grass.osgeo.org/grass70/manuals/v.build.polylines.html
>>>>>>
>>>>>> Markus
>>>> _______________________________________________
>>>> grass-user mailing list
>>>> grass-user at .osgeo
>>>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>> http://grass.osgeo.org/grass71/manuals/r.stream.extract.html ?
>>>
>>>
>>>
>>> -----
>>> best regards
>>> Helmut
>>> --
>>> View this message in context: http://osgeo-org.1560.x6.
>>> nabble.com/how-to-change-all-cats-in-a-vector-line-tp5175575p5175634.html
>>> Sent from the Grass - Users mailing list archive at Nabble.com.
>>> _______________________________________________
>>> grass-user mailing list
>>> grass-user at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/grass-user
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>>
>> ------------------------------
>>
>> Message: 4
>> Date: Sun, 30 Nov 2014 04:51:04 +0000
>> From: Michael Barton <Michael.Barton at asu.edu>
>> To: grass-user grass-user <grass-user at lists.osgeo.org>
>> Subject: Re: [GRASS-user] grass-user Digest, Vol 103, Issue 47
>> Message-ID: <D877804B-CAF8-4178-9156-6D2F160CA3C0 at asu.edu>
>> Content-Type: text/plain; charset="utf-8"
>>
>> r.stream.extract can make the raster streams?ones that are pretty much equivalent to those made with r.watershed. But it can?t do stream profiles AFAICT. Also, like r.watershed, it extracts a stream network, not a particular stream. That is why we?re using r.drain to extract a particular drainage.
>>
>> MICHAEL
>> ____________________
>> C. Michael Barton
>> Director, Center for Social Dynamics & Complexity
>> Professor of Anthropology, School of Human Evolution & Social Change
>> Head, Graduate Faculty in Complex Adaptive Systems Science
>> Arizona State University
>>
>> voice: 480-965-6262 (SHESC), 480-965-8130/727-9746 (CSDC)
>> fax: 480-965-7671 (SHESC), 480-727-0709 (CSDC)
>> www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu
>>
>>
>>
>> On Nov 29, 2014, at 4:40 PM, grass-user-request at lists.osgeo.org<mailto:grass-user-request at lists.osgeo.org> wrote:
>>
>> Re: [GRASS-user] how to change all cats in a vector line
>>
>>
>> Michael Barton wrote
>> Hi Markus,
>>
>> What I'm trying to do is start with a raster stream map from r.drain and
>> convert it to a sequence of vector points, where each point has
>> information as to its position along the stream. I then use the points for
>> sampling a stream profile and related information. Oddly enough, with all
>> of the very useful stream analysis modules, there is nothing I could find
>> to generate the data for a stream profile (distance from outlet or from
>> headwaters vs. elevation).
>>
>> v.to.points does a nice job of creating a sequence of evenly spaced points
>> with information about their location along a line (the "along" field).
>> BUT, if the line is composed of multiple segments or even if it has an
>> irregularity in it, the "along" values start over again from 0. The only
>> way I can use it is if I have a very clean and continuous vector line with
>> only a single cat.
>>
>> This has proven surprisingly difficult to obtain reliably from my raster
>> stream map. So far, the only way has been to do a two sequences of v.clean
>> (with thresholds 1.5 X the raster resolution) and v.build.polylines. If
>> you have any better suggestion, I'd love to hear it.
>>
>> Thanks again for the polylines idea. That was a big help.
>>
>> Michael
>> ____________________
>> C. Michael Barton
>> Director, Center for Social Dynamics & Complexity
>> Professor of Anthropology, School of Human Evolution & Social Change
>> Head, Graduate Faculty in Complex Adaptive Systems Science
>> Arizona State University
>>
>> voice: 480-965-6262 (SHESC), 480-965-8130/727-9746 (CSDC)
>> fax: 480-965-7671 (SHESC), 480-727-0709 (CSDC)
>> www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu<http://csdc.asu.edu/>
>>
>>
>>
>>
>> On Nov 29, 2014, at 10:20 AM, Michael Barton <
>>
>> Michael.Barton@
>>
>> > wrote:
>>
>> Thanks. This helped.
>>
>> Michael
>> ____________________
>> C. Michael Barton
>> Director, Center for Social Dynamics & Complexity
>> Professor of Anthropology, School of Human Evolution & Social Change
>> Head, Graduate Faculty in Complex Adaptive Systems Science
>> Arizona State University
>>
>> voice: 480-965-6262 (SHESC), 480-965-8130/727-9746 (CSDC)
>> fax: 480-965-7671 (SHESC), 480-727-0709 (CSDC)
>> www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu<http://csdc.asu.edu/>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> On Nov 29, 2014, at 1:23 AM, Markus Neteler <
>>
>> neteler@
>>
>> > wrote:
>>
>> On Sat, Nov 29, 2014 at 6:16 AM, Michael Barton <
>>
>> Michael.Barton@
>>
>> > wrote:
>> I have a vector line that is divided into 12 cat values. I?d like all
>> of the
>> line to have a single cat value. I?ve tried v.category to no avail. If
>> I
>> delete all categories and then add new categories, I get 12 cats again.
>> And
>> I can find no other way to get a single cat for the entire line.
>> Hopefully
>> someone can tell what I?m missing here.
>>
>> Please try to use
>> http://grass.osgeo.org/grass70/manuals/v.build.polylines.html
>>
>> Markus
>>
>>
>> _______________________________________________
>> grass-user mailing list
>>
>> grass-user at .osgeo
>>
>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>
>> http://grass.osgeo.org/grass71/manuals/r.stream.extract.html ?
>>
>>
>>
>> -----
>> best regards
>> Helmut
>>
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--
Angelos Tzotsos
Remote Sensing Laboratory
National Technical University of Athens
http://users.ntua.gr/tzotsos
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