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This is one of the most common GDAL/OGR Python Gotchas: A dataset is only written to disk after it is closed. Closing a dataset happens when it goes out of scope. This can be done in a number of ways and one of the following needs to be appended to the end of your script. data_out = None data_out = "some new value" del(data_out) There are libraries ...


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The problem may be related to bad data. A GPX file is a simple text file that can be opened in notepad and is formatted as XML. Try opening the file in notepad to double check any malformed/unclosed tags. Try comparing the and headers with another file that does load to locate a bad heading. Try deleting all but one or two ... sections and see if the ...


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I don't know if there is a similar tool in QGIS, but in ArcGIS there is a function called Extract to Points (under Spatial Analyst Tools - Extraction). I have been using this with big datasets, and it works. However, you would have to define the points initially that you want to extract the data too. If you wish to lower the resolution, you could use a tool ...



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