Timeline for Geopandas buffer using geodataframe while maintaining the dataframe
Current License: CC BY-SA 4.0
15 events
| when toggle format | what | by | license | comment | |
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| Oct 3, 2020 at 13:21 | comment | added | Alz | @RogerAlmengor I am not sure if I understand the question, can you explain a bit more? | |
| Oct 3, 2020 at 13:17 | comment | added | Alz | @zwornik the buffer here is a shapely method. Shapely operates on a cartesian plane and have no notion of projection or geography. If you have lat/lon and you expect the buffer to give you distance, you need to project the coordinated into an appropriate coordinate system first. | |
| Oct 3, 2020 at 13:00 | comment | added | Alz |
@jesnes I am sorry for the late response. I am not sure about that, I don't know the internals of Geopandas to be honest. But a simple test tells me that it is probably not the case: %timeit gdf.geometry.buffer(2) and %timeit [i.buffer(2) for i in gdf.geometry] on a somewhat large data give similar numbers (%timeit is an ipython magic command for simple benchmark). If it was vectorized, I would expect the former to be substantially faster.
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| Sep 30, 2020 at 10:56 | comment | added | Roger Almengor | Is there a way to perform the buffer but keeping the squared corners in rectangles? | |
| Sep 27, 2020 at 19:23 | comment | added | zwornik | @Alz If soure GeoDataFrame has geographic projection should it be first reprojected to projected coordinate system? | |
| Jul 15, 2020 at 18:40 | comment | added | jesnes | @Alz Does this mean that the geopandas overlay and geometry manipulation functions are vectorized? | |
| S Mar 5, 2020 at 9:47 | history | suggested | Alz | CC BY-SA 4.0 |
add import statements
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| Mar 5, 2020 at 9:46 | review | Suggested edits | |||
| S Mar 5, 2020 at 9:47 | |||||
| Apr 1, 2019 at 9:39 | comment | added | Alz | can you give an example? | |
| Apr 1, 2019 at 6:30 | comment | added | user32882 | not invalid... null geometry (empty) its not the same thing | |
| Mar 31, 2019 at 22:47 | comment | added | Alz |
@user32882 you cannot even create a GeoDataFrame if your input geometries are not valid
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| Mar 30, 2019 at 16:44 | comment | added | user32882 | This won't work if your original dataframe has null geometries | |
| Aug 28, 2017 at 16:00 | vote | accept | RutgerH | ||
| Aug 26, 2017 at 0:15 | review | First posts | |||
| Aug 26, 2017 at 0:40 | |||||
| Aug 26, 2017 at 0:13 | history | answered | Alz | CC BY-SA 3.0 |