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<p>Hi Tom,</p>
<p>Perhaps the following reference could be of help to you when you start writing the plugin:<br />Computers&Geosciences: 1986, V12, pp175-197 - DIGMAP: a computer program for accurate acquisition by digitizer of geographical coordinates from conformal projections. (FORTRAN IV code on a Z-80!!!)</p>
<p>Regards,<br />Benoit</p>
<p>On 21/02/2014 09:56, Thomas Colley wrote:</p>
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<p class="MsoNormal"><span style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;">Hi Nathan<!-- o ignored --></span></p>
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<p class="MsoNormal"><span style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;">Thanks for replying. From what I can understand it’s just a case of georeferencing the drawing on the board in the same way as you would a raster on the screen.</span><span style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;"> </span></p>
<p class="MsoNormal"><span style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;">ArcMap takes a text file with at least 4 coordinate pairs from the drawing on the board that it uses to tie the digitizing area into the on screen CRS.<!-- o ignored --></span></p>
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<p class="MsoNormal"><span style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;">So I hope it might be relatively easy to implement a plugin that can accept these coordinates then apply some sort of shift to any input from the drawing board.</span><span style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;"> </span></p>
<p class="MsoNormal"><span style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;">I’ll try and get some more info on how it works in ArcMap.<!-- o ignored --></span></p>
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<p class="MsoNormal"><span style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;">Thanks again</span><span style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;"><br />Tom<!-- o ignored --></span></p>
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<p class="MsoNormal"><strong><span style="font-size: 10.0pt; font-family: 'Tahoma','sans-serif';">From:</span></strong><span style="font-size: 10.0pt; font-family: 'Tahoma','sans-serif';"> Nathan Woodrow [mailto:madmanwoo@gmail.com] <br /><strong>Sent:</strong> 20 February 2014 12:54<br /><strong>To:</strong> Thomas Colley<br /><strong>Cc:</strong> qgis-user<br /><strong>Subject:</strong> Re: [Qgis-user] QGIS with digitizing board/tablet</span><!-- o ignored --></p>
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<p class="MsoNormal">Hey Thomas,<!-- o ignored --></p>
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<p class="MsoNormal">Wouldn't it just pick it up like a mouse? Qt does have support for more pressure based devices but QGIS doesn't take advantage of it. It will work fine if it acts like a mouse though.<!-- o ignored --></p>
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<p class="MsoNormal">- Nathan <!-- o ignored --></p>
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<p class="MsoNormal">On Thu, Feb 20, 2014 at 10:50 PM, Thomas Colley <<a href="mailto:t.colley@neath-porttalbot.gov.uk">t.colley@neath-porttalbot.gov.uk</a>> wrote:<!-- o ignored --></p>
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<p class="MsoNormal" style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto;">Hi<!-- o ignored --></p>
<p class="MsoNormal" style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto;">Is it possible to use QGIS with a digitizing board/tablet?<!-- o ignored --></p>
<p class="MsoNormal" style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto;">I’ve had a search but can’t find any information on this. <!-- o ignored --></p>
<p class="MsoNormal" style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto;">The board I am trying to use is a CalComp DrawingBoard III that our users have been using with ArcMap.<!-- o ignored --></p>
<p class="MsoNormal" style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto;">If it’s not currently possible in QGIS I will look at creating a plugin for it.<!-- o ignored --></p>
<p class="MsoNormal" style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto;">Thanks<!-- o ignored --></p>
<p class="MsoNormal" style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto;">Tom<br />_______________________________________________<br />Qgis-user mailing list<br /><a href="mailto:Qgis-user@lists.osgeo.org">Qgis-user@lists.osgeo.org</a><br /><a href="http://lists.osgeo.org/mailman/listinfo/qgis-user">http://lists.osgeo.org/mailman/listinfo/qgis-user</a></p>
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