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<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Hi Stefan,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US" style="color:#1F497D">Yes, we have considered the OGR/GDAL driver. Currently we believe that implementing a QGIS provider is the best approach for us, because the gap between our own model and the QGIS model is much
less than the gap between our own model and the OGR model.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US" style="color:#1F497D">That being said, we have not yet decided on a solution and tomorrow we might think differently. Being able to access/use our data files in other OSGeo tools as well is definitely a very strong
argument.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#272726;mso-fareast-language:NO-BOK">Best Regards<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#272726;mso-fareast-language:NO-BOK"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#272726;mso-fareast-language:NO-BOK">Sverre Jonassen</span></b><span lang="EN-US" style="font-size:10.0pt;color:black;mso-fareast-language:NO-BOK"><o:p></o:p></span></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#272726;mso-fareast-language:NO-BOK">+47 402 45 794</span></i><span lang="EN-US" style="font-size:10.0pt;color:black;mso-fareast-language:NO-BOK"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="mso-fareast-language:NO-BOK">Fra:</span></b><span lang="EN-US" style="mso-fareast-language:NO-BOK"> Blumentrath, Stefan [mailto:Stefan.Blumentrath@nina.no]
<br>
<b>Sendt:</b> 28. januar 2015 17:20<br>
<b>Til:</b> Sverre Jonassen; qgis-developer@lists.osgeo.org<br>
<b>Emne:</b> RE: Best practice for a new Vector Data Provider<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Hei Sverre,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Did you consider writing a GDAL/OGR driver for your format, which then could be used by QGIS for accessing it?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">That way it could also be used in / accessed by other OSGeo tools?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Cheers<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Stefan<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="mso-fareast-language:NO-BOK">From:</span></b><span lang="EN-US" style="mso-fareast-language:NO-BOK">
</span><a href="mailto:qgis-developer-bounces@lists.osgeo.org"><span lang="EN-US" style="mso-fareast-language:NO-BOK">qgis-developer-bounces@lists.osgeo.org</span></a><span lang="EN-US" style="mso-fareast-language:NO-BOK"> [</span><a href="mailto:qgis-developer-bounces@lists.osgeo.org"><span lang="EN-US" style="mso-fareast-language:NO-BOK">mailto:qgis-developer-bounces@lists.osgeo.org</span></a><span lang="EN-US" style="mso-fareast-language:NO-BOK">]
<b>On Behalf Of </b>Sverre Jonassen<br>
<b>Sent:</b> 28. januar 2015 13:05<br>
<b>To:</b> </span><a href="mailto:qgis-developer@lists.osgeo.org"><span lang="EN-US" style="mso-fareast-language:NO-BOK">qgis-developer@lists.osgeo.org</span></a><span lang="EN-US" style="mso-fareast-language:NO-BOK"><br>
<b>Subject:</b> [Qgis-developer] Best practice for a new Vector Data Provider<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Hi everybody,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">I am currently trying to make a new vector data provider with a source select dialog for QGIS so that QGIS can read and display data stored in a custom format. The
format in question proprietary to software developed and maintained by the company I work at. I am quite new to developing for QGIS and I am struggling to find the best approach to do this. I hope that somebody out there can help me. I have not been able to
find any internet resources on best practices for a data provider plugin.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">So far, I have succeeded in creating a very simple vector data provider plugin and accessing it through a source select dialog (which I have added to the src/ui/-folder).
This is, of course, not a suitable approach as it would mean that I have to build and deploy my own version of QGIS instead of a plugin. As far as I have understood it, there might be 3 possible approaches for me to make a new provider with a source select
dialog:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><span style="mso-list:Ignore">1)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">An ordinary C++ plugin for the source select dialog containing the provider. Is this possible? I have tried this and so far not succeeded.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><span style="mso-list:Ignore">2)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">A provider plugin containing all necessary ui. Is this possible? And if so, how can I add a menu-item to activate the source select dialog?<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><span style="mso-list:Ignore">3)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">A provider plugin without ui and a separate plugin with the source select dialog.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">A fourth option would be to create a plugin for OGR. This is, however, not a good solution for me because I would run a high risk of data conversion errors. Our
format is much more similar to the QGIS internal geodata model than to the OGR geodata model.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">I am developing on the Windows platform, using Visual Studio 2010. Primarily I want to create a C++-plugin since the API for our proprietary format is written in
C++, and because my daily development environment has no support for Python.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Any help would be greatly appreciated,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#272726;mso-fareast-language:NO-BOK">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#272726;mso-fareast-language:NO-BOK"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#272726;mso-fareast-language:NO-BOK">Sverre Jonassen</span></b><span lang="EN-US" style="font-size:10.0pt;color:black;mso-fareast-language:NO-BOK"><o:p></o:p></span></p>
<p class="MsoNormal"><i><span lang="EN-US" style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#272726;mso-fareast-language:NO-BOK">Senior software engineer</span></i><span lang="EN-US" style="font-size:8.0pt;color:black;mso-fareast-language:NO-BOK"><o:p></o:p></span></p>
<p class="MsoNormal"><a href="mailto:Navn.navnsen@norkart.no"><i><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#51A026;mso-fareast-language:NO-BOK;text-decoration:none">sverre.jonassen@norkart.no</span></i></a><span style="font-size:8.0pt;color:#51A026;mso-fareast-language:NO-BOK"><o:p></o:p></span></p>
<p class="MsoNormal"><i><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#272726;mso-fareast-language:NO-BOK">+47 402 45 794</span></i><span style="font-size:8.0pt;color:black;mso-fareast-language:NO-BOK"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black;mso-fareast-language:NO-BOK"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:black;mso-fareast-language:NO-BOK"><img border="0" width="135" height="37" id="Bilde_x0020_1" src="cid:image001.png@01D03BB6.FBB404F0" alt="cid:image001.png@01D03BB6.FBB404F0"></span><span style="font-size:10.5pt;color:black;mso-fareast-language:NO-BOK"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#272726;mso-fareast-language:NO-BOK">Løkketangen 20A</span><span style="font-size:8.0pt;color:black;mso-fareast-language:NO-BOK"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#272726;mso-fareast-language:NO-BOK">Postboks 145</span><span style="font-size:8.0pt;color:black;mso-fareast-language:NO-BOK"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#272726;mso-fareast-language:NO-BOK">N- 1300 Sandvika</span><span style="font-size:8.0pt;color:black;mso-fareast-language:NO-BOK"><o:p></o:p></span></p>
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<p class="MsoNormal"><i><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#51A026;mso-fareast-language:NO-BOK">______</span></i><i><span style="font-family:"Arial",sans-serif;mso-fareast-language:NO-BOK"><o:p></o:p></span></i></p>
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