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Cartographic Line Generalization QGIS 4 compatibility
Not QGIS 4 ready Likely abandoned
Not yet — the latest version declares max QGIS version 3.99.0, so it is not offered to QGIS 4 users.
Generalize lines suitable for presentation on printed or screen maps.
About
Algorithm gives lines (contours, coastlines, rivers, buildings etc.) on map with good geometrical and visual properties suitable for presentation on paper or screen maps. Level of generalization is controlled only by map scale making it very simple to use. If the result still looks too detailed or too coarse for some purpose, just change the scale parameter. It has distinct property of area preservation of features. This ensures that polygons do not collapse to lines or points, and also ensures closeness of input and generalized line. Nevertheless, topological issues are possible, e.g. self-intersections or intersections of features. The typical generalization combines simplification followed by smoothing. Generalization algorithms are based on area preserving approach known from generalization theory. This simulates manual generalization, and parameters of the algorithms were defined by analysing manually generalized lines in different scales. TIPS: - Input vector data must be in projected coordinate system. - Default scale for generalization is scale of current map view, change if necessary. - For buildings (or predominantly rectangular lines or polygons set algorithm to "Orthogonal segments". - If "Remove small areas" is selected, algorithm will automatically delete small areal objects for given scale. One can do manual filtering of small objects by area and appropriate threshold, too.
| Author | Drazen Tutic |
|---|---|
| Downloads | 45,942 |
| Latest version | 3.2.2 |
| Last updated | 2022-05-19 (1610 days ago) |
| Min QGIS | 3.2.0 |
| Max QGIS | 3.99.0 |
| QGIS 4 ready | No |
| Maintenance | Likely abandoned |
| Categories | Vector tools, Cartography & layout |
| Tags | smoothing, generalization, cartography, area preserving, simplification |
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Maintenance: Active = updated within 1 year, Quiet = 1–3 years, Likely abandoned = over 3 years.