[GRASS-user] Grass 6.4, Opensuse 13.1/13.2
Angelos Tzotsos
gcpp.kalxas at gmail.com
Sat Nov 29 19:16:07 PST 2014
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:
>>>
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>>>
>>> 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
>>> *******************************************
>>
>>
>>
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>
>
--
Angelos Tzotsos
Remote Sensing Laboratory
National Technical University of Athens
http://users.ntua.gr/tzotsos
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