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I am using Quantum GIS and trying to create a vector field using data from two separate netcdfs. One contains the u data, one contains the v data. Can this be done, and if so, how? Thanks.

Jason

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What is u and v data? – Nathan W Jan 15 '13 at 3:39
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u and v are the vector field components along the x and y directions; see zonal and meridional – Mike T Jan 15 '13 at 9:58
    
@User could you please explain what it would mean to "create" a vector field? Do you want to depict one (perhaps as a collection of arrows on a map)? Or interpolate samples of one onto a grid? Or perhaps create some kind of native QGIS vector field data type for further analysis? – whuber Jan 15 '13 at 15:13
    
Yes, in this case I simply want to render a collection of arrows on a map for visual purposes only. I will be overlaying the current vectors (arrows) on a temperature map. I had been using IDV for this, but I am having compatibility issues at the moment. I have zero experience with qgis. It looks like a very promising application though. – user14241 Jan 15 '13 at 21:37
    
This question is old, but just in case: there is now a plugin for that: plugins.qgis.org/plugins/VectorFieldRenderer – Víctor Velarde May 22 '13 at 8:32

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