Unanswered Questions
38,446 questions with no upvoted or accepted answers
34
votes
1
answer
4k
views
Leaflet v1 plugin: layer control for ungrouped, grouped, and nested-grouped layers
I need a Leaflet plugin which extends L.Control.Layers. I have the following requirements:
works with Leaflet 1.x
handles ungrouped layers alongside grouped ones
handles nested layer groups
does not ...
CommunityBot
- 1
16
votes
0
answers
1k
views
High PostgreSQL/PostGIS memory and disk usage when saving QGIS project
Why would simply pressing the Save button in QGIS cause my local PostgreSQL instance to cause memory and disk usage to spike to "Not Responding" levels? Seems to me like the PostgreSQL ...
- 18.7k
14
votes
0
answers
3k
views
How to prevent cross-world lines in ggplot world map?
I'm having issues displaying 'great circles' paths and polygons in ggmap, an extension of ggplot2. Please enter the following code to replicate my issues:
https://gist.github.com/Robinlovelace/...
- 9,063
12
votes
0
answers
536
views
Saving ArcGIS Pro symbology to PostGIS DB for each layer
I want to have a default style/symbology assigned to each layer in a PostGIS database so that whenever it is loaded in ArcGIS Pro, it will come up with the default style.
There is a way in QGIS to ...
- 65.5k
12
votes
0
answers
2k
views
PyQgis Exporting Print Layout: "ERROR 6: The PNG driver does not support update access to existing datasets."
I am trying to export a .tif loaded into a pre-configured print layout template and further exported as .png
def openLayer(project, fp, basename, vector=True):
layer = QgsVectorLayer(fp, basename) ...
- 18.7k
12
votes
1
answer
900
views
Calculate volume of space defined by multiple overlapping 3D polygons
I have thousands of 3D polygons scattered in space but they mostly overlap with many of their neighbors in big extent.
Is there any way how to compute volume they define effectively?
I would love to ...
CommunityBot
- 1
12
votes
0
answers
432
views
Processing post-execution script hook to clear scratch layers?
I've been cobbling together some Processing scripts for QGIS 2.18 (I'm not a fan of QGIS 3 scripts), and I keep running into one particular problem: my script creates a lot of scratch layers and they ...
- 575
12
votes
0
answers
374
views
ESRI Runtime Geodatabase Shape storage
Does anyone out there know the geometry storage encoding for ESRI's Runtime Geodatabase (.sqlite) format? aka mobile geodatabase.
There are 'GDB_ tables', 'st_ tables', 'RTREE indexes' and other ...
- 35k
11
votes
2
answers
2k
views
QGIS GRASS Processing Not Working on MacOS?
Recently upgraded to QGIS3 (3.0.2) for MacOS (High Sierra) and encountered GRASS (7.2.2) issues. Tried adding a custom variable and now when running GRASS algorithms (e.g. r.reclass) I get the ...
CommunityBot
- 1
11
votes
0
answers
618
views
MapScript with Python 3
I am trying to build raster summarizing features into a GeoDjango webmap,
and would like to use the django-raster and django-wms packages to do so. I believe that I have them set up correctly, but am ...
- 13.6k
11
votes
0
answers
389
views
Defining partial or complete overlap with QgsSpatialIndex
I'm working on adding some functionality to a QGIS plugin. It currently uses a QgsSpatialIndex to efficiently compute whether the features of a vector layer intersect (potentially millions) of ...
- 35k
11
votes
0
answers
1k
views
What is the convergence threshold for ArcGIS Iso Cluster?
The ArcGIS tool Iso Cluster Unsupervised Classification does not seem to have any documentation on the convergence threshold used in the tool. To compare, Erdas Imagine has all of the necessary ...
- 51.9k
10
votes
0
answers
2k
views
Nearest neighbour joins for two geodataframes using KDtree from scipy/sklearn
I have a number of large geodataframes and I want to automate the implementation of a Nearest Neighbour function using a KDtree for more efficient processing. The process I want to achieve here is to ...
- 1,408
9
votes
2
answers
3k
views
Adding support to Esri's FileGDB driver when fiona/gdal/osgeo were installed through Anaconda
Is there a way to tweak the fiona/gdal/osgeo packages installed through Anaconda so that they can be used to read/write GDB files using the ESRI FileGDB driver? The main thing I'm actually trying to ...
CommunityBot
- 1
9
votes
0
answers
147
views
Does QGIS use data source-specific operations?
This may be a very basic question, but I couldn't find an appropriate answer.
Does QGIS use data source specific operations where available and appropriate? For example, when using the Join attributes ...
- 35k