Unfortunately I do not have access to Manifold as my employer refuses to pay for it, so am currently investigating alternatives.
Suppose I would like to buffer an alignment linestring stored in a database (SQL Server 2008), sample points at intervals around the buffer and then assign elevations to those points based on a raster:
- With Manifold I would simply formulate this as a single nested query and link a drawing (vector layer) to it to contain the output, then if the alignment changes I just refresh the query and the linked drawing updates accordingly
- With QGIS I can achieve the same result via a multiple step manual procedure (generating superfluous shapefiles along the way) each time the alignment changes, but this is nowhere near adequate for my requirements
Is there a more elegant way of combining functions in QGIS? If not, is this the sort of thing I might be able to achieve server side using PostGIS or similar? (I am completely ignorant of the workings of PostGIS).