All Questions
12 questions with no upvoted or accepted answers
3
votes
0
answers
206
views
QGIS - what the equivelant rendering scale dependencies for the zoom levels when generating XYZ Tiles (Mbtiles)?
I am trying to make a map from zoom 0 until zoom 12 in QGIS. All shapefiles have CRS: EPSG 900913.
What i am trying to acheive is eg: on zoom 0 will show just the map, then zoom 2 till 8 will appear ...
- 31
3
votes
0
answers
516
views
GeoServer wind speed with WMS
I have a GeoTIFF layer with spatial resolution of 3 km with two bands with wind speed components (u,v). I want to display these datasets with RasterAsPointCollection plugin with arrows size and ...
- 187
3
votes
3
answers
312
views
How to make the display of a satellite image the same across users?
I have a group of users counting objects in a satellite image. To keep viewing conditions the same I wish each user to have the same display (e.g., the same scale).
To do this, I have asked users to ...
- 31
2
votes
0
answers
112
views
Mapnik image render not corresponding to generated tiles
I successfully manage to install a tile server using Mapnik following this tutorial: https://switch2osm.org/serving-tiles/manually-building-a-tile-server-ubuntu-22-04-lts/
The tiles are fine and look ...
- 21
2
votes
0
answers
3k
views
How to get bounds coords by center LatLng point, width and height in pixels and zoom?
I have to calculate bounds coordinates to query mongodb box on server side to get data before google maps is loaded.
How can I get four LatLng corners by center LatLng point, window width and height ...
- 131
2
votes
0
answers
516
views
QGIS Web Client zoom and scale
I have a problem with setting up zoom levels and max/min scale in QGIS web client. It looks like that values used in GlobalOptions.js file does not apply. Right now ZOOM_LEVELS is 70, maxScale 50 and ...
- 81
1
vote
0
answers
80
views
Zoomscale method in QGIS C++ API
I am working on a custom QGIS application using QGIS C++ APIs.
I am able to render .mbtiles file of world blue marble as a raster file on Qgsmapcanvas. but when I call zoomscale API on canvas with ...
- 95
1
vote
0
answers
59
views
zoomScale() doesn't work in QGIS 2.14 standalone c++ application
Can't set scale for my canvas with mapCanvas.zoomScale(50000); Seems like canvas is zooming to 1:1 and for a few seconds I can't zoom in or zoom out with mouse wheel. Any suggestions?
- 123
1
vote
0
answers
88
views
ol3 zoom with defined scale
I am trying to show map based on the gridset defined in geoserver, in such a manner that map zooms to that Scale only.
Scale is as follow : 1:1000, 1:500, 1:400, 1:300
view = new ol.View({
...
- 19
1
vote
0
answers
147
views
Enlarge region/features in shapefile
I'm completely new to QGIS.
I have a shapefile over the counties in Denmark (see here for what the shape file looks like). The counties around Copenhagen are rather small and I'd like to add an ...
- 111
0
votes
0
answers
3k
views
Display Features based on Zoom Level using OpenLayers
I want to display roads(linestring) on the map using OpenLayers.currently, I manage to assign styling based on road type but when I run the server I can see all the data displayed. I want to change ...
- 113
0
votes
0
answers
62
views
Trying to figure out ArcGIS API's `mapScale` variable and how it maps to OpenStreetMap's zoom level
I'm using ArcGIS' /export endpoint to get an .svg of a few map layers given a specific bounding box. However, when I apply the .svg as an image overlay to OpenStreetMap's world map using Leaflet, the ...
- 23