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Dear list,<br><br>Many references to IDW use QGIS, GRASS or GDAL to create raster surfaces. However, what I am looking for is a PL/SQL function to calculate the values at points in a grid from irregularly spaced observation points using IDW: all in vector space.<br><br>Has anyone created such a function before? Many thanks in advance.<br><br>Kind regards,<br><br>Edward<br> </div></body>
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