[gdal-dev] Google Summer of Code

Sun Mar 20 00:15:42 PDT 2016

Hello Dmitry,
Sorry for the long delay, my exams had the better of me, but now they're
over :) .
I have updated libpng 1.6.21 and i have created a pull request after
removing files from original libpng 1.6.21 that I think would not be
required as a library in GDAL.
All test on travis have been passed, and you can see the pull request here
: https://github.com/OSGeo/gdal/pull/108

As for building on desktop, I configured with python, but the same issue of
"ImportError: No module named osgeo persists". I am trying to understand
why this is happening, and am working out how to get rid of this problem by
reading GDAL wiki.

Cheers
Tanuj

On Tue, Mar 15, 2016 at 1:24 AM, Dmitry Baryshnikov <bishop.dev at gmail.com>
wrote:

> Hi Tanuj,
>
> The error: ImportError: No module named osgeo
> is because you build gdal without python support (you need python with
> developers headers).
> On Linux Linux this is done via such command:
> ./configure --with-python ... <other config options>
>
> On Windows it depends how you build. On Windows I launch separate tests
> successfully but never try the whole tests (run_all.py).
>
> Best regards,
>     Dmitry
>
> 14.03.2016 19:11, Tanuj Kumar пишет:
>
> Hello Dmitry,
> I was reading up on the gdalautotest wiki(
> <http://trac.osgeo.org/gdal/wiki/TestingNotes>
> http://trac.osgeo.org/gdal/wiki/TestingNotes), and it says, "After
> building with either the old or new generation python bindings, and
> installing them (or adding them to your path from the build tree)..."
>
> I could not understand what that means. I guess this is important because
> when I tried the commands given on that page, I got the following error :
>
> File "./run_all.py", line 37, in <module>
> import gdaltest
> File"pymod/gdaltest.py", line 37, in <module>
> from osgeo import gdal
> ImportError: No module named osgeo
>
>
> Now, as far as I could understand, it is importing a file called "gdal.py"
> from a folder called osgeo. I searched for it, and got its path as
> "gdal/swig/python/osgeo, whereas the autotest folder is separate.
> So my guess is I have to somehow specify the path of "gdal.py"
>
> Could you or anyone please guide me on how to proceed with this?
>
> Thanks
> Tanuj
>
> On Sat, Mar 12, 2016 at 11:00 PM, Tanuj Kumar <kmrtnjscnc at gmail.com>
> wrote:
>
>> Alright, thank you very much, I'll get to work on it!
>>
>> On Sat, Mar 12, 2016 at 10:47 PM, Dmitry Baryshnikov <
>> <bishop.dev at gmail.com>bishop.dev at gmail.com> wrote:
>>
>>> Hi Tanuj,
>>>
>>> I wrote a big letter to the list. There is some answers there. Also I
>>> add comments below.
>>>
>>> Best regards,
>>>     Dmitry
>>>
>>> 12.03.2016 10:36, Tanuj Kumar пишет:
>>>
>>> Sorry for replying so late, got caught up in an exam :)
>>>
>>> I replaced libpng folder of gdal (frmts/png/libpng) with libpng 1.6.21.
>>> And then used ./configure and make install on this test version of gdal,
>>> which installed successfully. I used gdalinfo on a png file provided with
>>> the libpng 1.6.21 source, to check if it was OK, and it successfully gave
>>> the png file details.
>>>
>>> Is that enough to check the build on the computer?
>>>
>>> No, the autotests must be passed.
>>>
>>>
>>> I have also tested the gdal library with libpng 1.6.21 on Travis, and
>>> the build succeeded.
>>> https://travis-ci.org/Raeburn1687/gdal/builds/115487530
>>>
>>> Would all that be enough to check whether the update was succesful?
>>>
>>> I expected that travis from main gdal repo checked your PR.
>>>
>>>
>>> PS - Although I have copied the files from libpng 1.6.21 source to the
>>> gdal libpng folder, how would I know if any of those files are not required
>>> for gdal?
>>>
>>> You need to see the previous version. Some files not needed (i.e.
>>> configures and so on, which already comes from gdal, but legal notice must
>>> be present (license, autors, etc.) ). Don't hesitate to ask in list.
>>>
>>>
>>> Thank you
>>>
>>> Tanuj
>>>
>>> On Thu, Mar 10, 2016 at 2:07 PM, Dmitry Baryshnikov <
>>> <bishop.dev at gmail.com>bishop.dev at gmail.com> wrote:
>>>
>>>> Hi Tanuj,
>>>> 09.03.2016 13:17, Tanuj Kumar пишет:
>>>>
>>>> Yes, I have looked at the ideas list, and I am currently reading up on
>>>> idea no. 16, which is, implementing support for the proposed standard for
>>>> incrementally parseable GeoJSON data.
>>>>
>>>> Also, I was thinking that maybe I could work on ticket no 6294,
>>>> <https://trac.osgeo.org/gdal/ticket/6294>
>>>> https://trac.osgeo.org/gdal/ticket/6294
>>>> after I've studied about the GSoC idea, which is not really a bug, but
>>>> an enhancement. But if there are any other tickets that you or anyone else
>>>> would like to recommend me to work on, I'd love to see them too!
>>>>
>>>> I think this rather arguing ticket as the bool is not exist in plain C,
>>>> and duplication functions seems to me not good idea.
>>>> I think this ticket <https://trac.osgeo.org/gdal/ticket/6185>
>>>> https://trac.osgeo.org/gdal/ticket/6185 is good for: 1. building GDAL,
>>>> 2. Testing via TraviC on GitHub. By the way the libpng version is 1.6.21 or
>>>> maybe higher.
>>>>
>>>> Anyhow, you have to try to build gdal and test it with autotests from
>>>> appropriate folder.
>>>>
>>>>
>>>> Now, about the GSoC idea, do I need to know JSON( or GeoJSON, for that
>>>> matter) to work on it? I only ask because the idea lists C/C++ as the
>>>> required skills, but I feel that maybe this work would involve knowing JSON
>>>> too...
>>>>
>>>> Yes, certainly. But JSON are very simple. Also GeoJSON spec. can be
>>>> found here <http://geojson.org/>http://geojson.org/Thanks and regards,
>>>>
>>>>
>>>> Tanuj
>>>>
>>>>
>>>> On Wed, Mar 9, 2016 at 2:58 PM, Dmitry Baryshnikov <
>>>> <bishop.dev at gmail.com>bishop.dev at gmail.com> wrote:
>>>>
>>>>> Hi, Tanuj
>>>>>
>>>>> I'll look for opened tickets for you, or maybe others can recommend
>>>>> some for you.
>>>>>
>>>>> By the way, do you see the idea list (
>>>>> <https://trac.osgeo.org/gdal/wiki/SummerOfCode#a2016IdeasList>
>>>>> https://trac.osgeo.org/gdal/wiki/SummerOfCode#a2016IdeasList)?
>>>>> The ideas are not ranked yet - the numbers in the list - are only in
>>>>> order.
>>>>> This is a task for us to rank the ideas.
>>>>> But, have you some preferable idea (or ideas) for GSoC from this list
>>>>> or maybe you have got own?
>>>>>
>>>>> Best regards,
>>>>>     Dmitry
>>>>>
>>>>> 04.03.2016 16:11, Tanuj Kumar пишет:
>>>>>
>>>>> Hello,
>>>>> I am interested in applying for GSoC this year. Currently, I am
>>>>> reading up on the GDAL Summer of Code ideas list. I know C++ and C, and I
>>>>> have some experience on working on linux.
>>>>> Could the mentors please recommend a bug for me to work on, I'd really
>>>>> love to start off as soon as possible!
>>>>>
>>>>> Thank you,
>>>>>
>>>>> Tanuj Kumar
>>>>> Birla institute of Technology and Science
>>>>> Pilani, Rajasthan,
>>>>> India
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> gdal-dev mailing listgdal-dev at lists.osgeo.orghttp://lists.osgeo.org/mailman/listinfo/gdal-dev
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> gdal-dev mailing list
>>>>> <gdal-dev at lists.osgeo.org>gdal-dev at lists.osgeo.org
>>>>> <http://lists.osgeo.org/mailman/listinfo/gdal-dev>
>>>>> http://lists.osgeo.org/mailman/listinfo/gdal-dev
>>>>>
>>>>
>>>>
>>>> Best regards,
>>>>     Dmitry
>>>>
>>>>
>>>
>>>
>>
>
>
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