Clearly, the NodeDepth cannot be aggregated using SUM, we need to use MIN. Thus, we define a new measure MinNodeDepth which simply aggregates the NodeDepth column using MIN. The final result, with all these measures in a PivotTable, can be seen here:

Putting the chopped up pieces of spatial data as blobs into PostgreSQL was what inspired PostGIS. It seemed really obvious that we had the makings of an interactive real-time analysis engine, with all this processed data in the database, if we could just do more with the blobs than only stuff them in and pull them out.

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PeterJacobsen

After copying and pasting your settings to the file, type Ctrl + x to exit. The text editor will ask "Save modified buffer?", and you can type y and then hit Enter.

    dtRelation = new DataRelation("CustOrderRelation ", custCol, orderCol);