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In order to work properly, FlowMapper needs a square matrix. Just reviewed your dataset and assuming that entries "New York City" and "New York" are same (since they seem to have the same coordinates) you have 38 nodes. So you would need a 38x38 matrix. Make a list of all 38 nodes and create an empty square matrix. Then, based on your original data that ...
The old Openstreetmap plugin had the ability to edit and upload the data back to the OSM Servers. This was dropped, because the OSM editors are better, and keeping up to date with the OSM tagging would need more time than the plugin authors want to spend on it. You can however change properties of the points, lines and polygons layers inside QGIS, as you do ...
I just found out about the Custom Forms feature on QGIS. This was just what I needed. More info found here: http://nathanw.net/2011/09/05/qgis-tips-custom-feature-forms-with-python-logic/
Please check that your data is in correct format. Decimal separator is "." point and items are tab or space delimited. At first, it might be better to run the plugin with the test data provided under the installation folder. (or download the plugin from http://cempro.dyndns.org/FlowMapper-0.4.zip and extact the sample data) Interaction matrix should be ...
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