Hi Calvin and list,
Have you looked at the GRASS GIS v.generalize tool?
https://grass.osgeo.org/grass64/manuals/v.generalize.html
The Douglas-Peucker algorithm is implemented there and I have used that
with (topologic)success recently on many touching polygons. Should work
for polylines too!
Best regards,
Aron
On 01/10/2019 08:19, Tim Sutton wrote:
Hi
On 26 Sep 2019, at 17:13, C Hamilton <adenacult...@gmail.com
<mailto:adenacult...@gmail.com>> wrote:
Are there any geodesic QGIS algorithms that simplify lines?
"Simplify" just uses the projection units of measure. If there isn't
I thought I would add this to the Shape Tools plugin. I could easily
implement the Douglas-Peucker algorithm using geodesic math.
For GPS tracks I also see a need to throw out all points that are
less than a certain distance or less than a certain time interval. I
don't see any simplification algorithms that make use of time. Am I
just missing them?
No I don’t think we have any time based simplifiers - would be a great
addition!
Regards
Tim
Thanks,
Calvin
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