On Sat, 3 Nov 2018 at 11:28, Francois Chartier <[email protected]> wrote: > > Hi, > > I am using Microsoft Access to populate a data set at regular intervals along > the vertical axis between two elevation ranges (50 to 350 masl) and have the > attribute (which does not exist) of that elevation to become the attribute of > the above data point. example at 124.4, attribute at location 1 is A, > therefore at 124 attribute becomes A, and this down to the next data point at > example 121.6 masl where it is B (you will at location 1: at 124=A, 123=A, > 122=A). > The goal being to interpolate different elevation slices at regular intervals > as data points are not all at the same elevations depending on location. > I am able to do this with a Cross Join query in access and then removing any > intervals above top and bottom. this is quite fastiduous, and i am wondering > if i can do this straight in qgis, or > if i can run an interpolation with a condition that the value at location x,y > equals the next above attribute value. this would keep the attribute table > much smaller.
There's nothing directly available out of the box which does this, but it sounds like the perfect candidate for a little Python Processing script algorithm, if you've got some Python experience or can contract someone who has. Alternatively, you may be able to create a graphical model which also does this, using a combination of: - set Z value (to set the first feature's z values) - array of translated features (to create the "stacked" features at different heights) - field calculator (to populate the attribute values) Nyall > > thanks > F > _______________________________________________ > Qgis-user mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user _______________________________________________ Qgis-user mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
