[gdal-dev] support for Czech Exchange Format for Land Consolidation

[Martin Landa]

Hi,

2015-04-17 12:26 GMT+02:00 Martin Landa <landa.martin at gmail.com>:
>>> to the user, we could have a generic XML driver that would try several XSLT
>>> documents and then feed the transformed document to the GML driver. I don't
>>
>> Anybody here is interested to implement such driver or at least to
>> collaborate on such project?
>>
>>> If you go with a from-the-scratch driver, I would not recommand to go from the
>>> GML one which has become very complicated. GeoRSS or GPX are probably better
>>> starting points.
>
> it's seems to me that I will go this way (from-the-scratch driver).
> Unfortunately I do not have enough time to start working on generic
> driver first.

I am back with this topic again, I was thinking to use xsd2cpp way,
but it seems to be not possible (or hardly possible) [1]. I was also
thinking to design VFP driver classes as descendant of GML driver
classes (I could basically write gfs file for VFP format). The
difference would be how to read geometry, example:

      <par>
        <pa parid="2402887611" vymo="291" vzd="296" cir="0" vymg="280.568">
          <gpar>
            <area>
              <reg>
                <solid>
                  <polygon xmlns:v="http://www.hsi.cz/vfp" xsi:type="v:linpol">
                    <segment xsi:type="v:se">
                      <c x="1074884.94" y="610475.72" />
                      <c x="1074902.12" y="610470.6" />
                      <c x="1074875.22" y="610462.44" />
                      <c x="1074873.4" y="610461.76" />
                      <c x="1074861.4" y="610470.26" />
                      <c x="1074862.21" y="610470.45" />
                      <c x="1074884.94" y="610475.72" />
                    </segment>
                  </polygon>
                </solid>
              </reg>
              <t hod="60" vys="4.5" sir="5.5" j="33">
                <c x="1074877.99" y="610469.04" />
              </t>
            </area>
          </gpar>
          ...
          </pa>
        </par>


But it doesn't seems to be a reasonable way. So I end up again with
plan to write a special driver from scratch. Or is there any other way
which I overlooked?

Thanks, Martin

[1] http://codesynthesis.com/pipermail/xsd-users/2016-January/004755.html

-- 
Martin Landa
http://geo.fsv.cvut.cz/gwiki/Landa
http://gismentors.cz/mentors/landa