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<p class="MsoNormal">I have another question to which I couldn’t find an answer in the archives. If it has been previously discussed, please tell me the right search keywords.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I need to represent 3dm data in GeoJSON. But GeoJSON positions specify the coordinates to be [x, y, z, m1, m2, …]. Any number, but the first 3 are defined to be x, y, and z (if all are present). So, how do I represent 3dm data (position
has x, y, and m, but no z).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The best option that I see is to supply a null for the z. Would that break readers?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Another option would be to encode the dimensions of the coordinate system in the CRS, along with its name. The coordinates for 3dz and 3dm would then be indistinguishable; the only difference would be in a non-standard attribute in the
CRS. This would certainly confuse GeoJSON clients.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there a better option?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">And I don’t want to encode this in the type. I shouldn’t need to have Point3m and Polygon3m, given that I don’t need Point2, Point3z, and Point4.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks for any help you can give.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Arlo<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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