polygonize | Javascript Implementation of GEOS 's Polygonize function

I'm using a compute shader to speed up parallel processing of a 3D space computation. The shader gives me compile error Shader error in 'Polygonize': syntax error: unexpected token 'struct' at kernel Polygonize at Polygonize.compute(10) (on d3d11). Polygonize.compute is the shader file. The weirdest thing is that the first struct doesn't cause an error but the second one does. This is the code: (there's more later but the error occurs at the declaration of the second struct)

I set the return to null for the component and condition in question to check the data I'm returning and I couldn't find any issues in the coordinates arrays.

I get data as an array of geometry collections containing linestrings that make borders (from OSM's Overpass). Leaflet seems to only accept shapes, features, and featurecollections as inputs. As such, I wrote something to convert each geometry collection to a feature containing a multipolygon and added in a name and ID properties then made it into a featurecollection.

Example of OSM request body

I have a rather large raster (384 MB) that I am trying to convert to a polygon shapefile in R. The rastertoPolygons function from the raster package doesn't seem to be able to handle this, as I tried running it but gave up after it was going for 7+ hours.

I also tried to use gdal_polygonize.py from GDAL in python via this function by John Baumgartner but after letting the function run for 30+ minutes I still have nothing. Am I simply not letting it run long enough? I was under the impression that gdal_polyonize.py was supposed to be very quick, i.e. seconds.

Here's a link to my raster file.

Any guidance would be greatly appreciated.

I have a large dataset (~20000) of past storms over 40 years that have a list of central points over 3-hour intervals. I'm trying to overlay a mesh-grid onto a large area from which I would like to count the number of times each storm has passed over any given grid cell, however my current implementation only tracks the position at those three-hour intervals, leading to some instances where the track jumps a grid space when it should also be counted.

I am trying to address this problem using geopandas instead to create a lineseries for each storm track, and then perform an intersection against the mesh grid, however, I cannot find any functional implementations that allow me to do so.

To create the grid in geopandas, I am using the following solution from a previous question:

I've a 1 arc-second SRTM raster layer from USGS.

I'm trying to turn that raster into a set of polygons for each 100 m elevational bands. I then would like to dissolve or union polygons of same attributes together.

My problem is that the majority of the polygons get an invalid geometry in the process.

I'm not sure where the problem arises so I will describe all the steps I did:

I am trying to get rid of the spatial geometry that falls outside of the shapefile boundary I read. Is it possible to do this without manual software like Photoshop? Or me manually removing the tracts which span outside of the city's boundries. For example, I took out 14 tracts, this is there result:

I have provided all of the subset of the data and the key to test it yourself. Code script is below, and the dataset is https://github.com/THsTestingGround/SO_geoSpatial_crop_Quest.

I have done st_intersection(gainsville_df$Geomtry$x, gnv_poly$geometry) after I converted Geomtry to the sf, but I don't know what to do next to get rid of those portions.

I have this code based on this question, just a different point Extract constrained polygon using OSMnx

I am trying to plot the block in which the point is located but it does nothing, it just prints "Done" but I cannot see any image

I'm using the following loop to calculate the difference between two images of the same size:

I am trying to create an SQL query (PosgreSQL + PostGIS) on a single table that contains 1000’s of overlapping polygons (multi-part, some with holes) that will: . cut polygons into non-overlapping pieces, and for each piece . count how many times the overlap occurred.

I have found a few examples googling but none shows the full answer. For example, here is one that cuts polygon (based on: PostGIS equivalent of ArcMap Union ) but doesn’t cut properly if polygons have holes. And I can’t figure out how to add a column with counted overlaps: