I have a large polygon dataset, with slivers between almost all polygons. I've tried buffering (and negative buffering) to expand each feature, but this results in both slight overlaps and also retains some (smaller) slivers. Do you have any suggestions for how I could make a topologically...
This will remove the fill colour (to just keep an outline or other option of your choice). Setting the symbology for a polygon (Bristol Output Areas) in QGIS Next, we want to better visualise the NO2 point (x, y) data. We will colour the points and change their size based on the ...
Python QApplication.processEvents - 47 examples found. These are the top rated real world Python examples of qgis.PyQt.QtWidgets.QApplication.processEvents extracted from open source projects. You can rate examples to help us improve the quality of examp
What is the bug or the crash? If I have two overlapping polygons and I want to remove the overlapping area, the resulting geometry is invalid. I've noticed this using EPSG:3061. It is always failing (for a few tests). I've tried to repro...
In a polygon dataset, I have several thousands of features that have gaps mostly at the corner zones (see below). I'd like to remove them but I haven't yet found an appropriate workflow. I have already tried to use v.clean (bpol, rmdupl, rmarea), however, I get an empty output...
Then I want to count, for each polygon, how many people fall within that polygon's buffer, regardless of whether that buffer overlaps with the buffer from another polygon. I want to calculate this value for each polygon and append it as a column to the layer's attribute table (we'll...
Input polygons: Final result: Here's how it currently works (there's a standard QGIS tool for each step): Convert the input polygons into lines. Polygons to lines Split the input polygons with lines. Split with lines Calculate the centroids of the polygons. Point on Surface...
I removed those rows in the attribute table where my polygon area was zero: Open up Attribute Table > sort the Area column so that the zero values are at the top > select Toggle editing mode > Select the rows you want to delete > Select Remove selected feature > Deselect Togg...
The point layer has multiple existing features (1,000+) within which I need to populate the 'Zone id' field, taking the value from the polygon feature with which each one overlaps. How do I do this quickly and directly, i.e. without doing it manually, creating new layers...
convert polygons to outlines and remove overlaps Share Improve this answer Follow answered Nov 16, 2015 at 3:12 Miro 9,78488 gold badges5151 silver badges8989 bronze badges Add a comment Your Answer Sign up or log in Sign up using Google Sign up using Email and Password Po...