A new algorithm in QGIS’s analysis library API to export directly contour lines and polygons is added. The method is not based on GDAL algorithms, but directly uses mesh layer triangular mesh interpolation methods. It is both fast and with smooth shapes, matching rendered images from QGIS. You can try the new processing algorithm in Crayfish processing toolbox.
This feature was funded by Austrian Ministry of Agriculture, Forestry, Environment and Water Management
This feature was developed by Peter Petrik (Lutra Consulting)