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havatv / qgisclimbplugin

QGIS Plugin to calculate the climb along a line
GNU General Public License v2.0
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Filtering or Smoothing Input Data #6

Open jonach66 opened 5 years ago

jonach66 commented 5 years ago

I´m using CLIMB with GPX Files (Hiking, Skimountaineering) from GPS Hardware , and the results I get are far to high. I think this is caused by the high number of points with elevation plus/minus deviations. If all this points are used for calculation without filtering calculation delivers to high results. Possible to integrate smooting / filtering algorithm? Kind regards! Jo PS: Maybe there is another way to "smooth" raw data, but I´m a noob with QGIS, sorry!

havatv commented 5 years ago

Thank you for your interest in the Climb plugin, @jonach66! Dense sampling and GPS (GPS elevation values are often imprecise) may definitely cause too high climb / descent values. As you mention, a solution is to do smoothing in a pre-processing step. The plugin is currently being considered as a candidate for QGIS core, so any further development of the plugin will have to wait until that process has finished. In the meantime, I suggest that you look for 3d generalisation / smoothing algorithms. If such an algorithm does not exist, it would be a good idea to propose it. And if you have a DEM, the plugin can take the elevation values from the DEM.