wmts | Collection of WMTS services | Runtime Evironment library

Previously I asked this question in a single threaded situation, and was given an answer that worked in that situation here. But now I'm trying to answer the same question in a multithreaded environment.

I'm using OpenLayers to draw a UK Ordnance Survey map. I have working examples, but they use a less secure method of accessing the UKOS servers by giving a key in the URL, whereas I'd like to use the more secure OAuth2 arrangement instead. To this end, I already have a CGI script querying the servers to get a session token, and returning this as JSON. The problem can be solved in a single-threaded environment by making the map drawing page wait for its return, as follows:

I'm using OpenLayers to draw a UK Ordnance Survey map. I have working examples, but they use a less secure method of accessing the UKOS servers by giving a key in the URL, whereas I'd like to use the more secure OAuth2 arrangement instead. To this end, I already have a CGI script querying the servers to get a session token, and returning this as JSON. The problem is making the map drawing page WAIT for its return, as follows:

I want to save some tiles in my app directory. I think, i can start through bbox, but i dont know current cooedinates (z,y,x) for download.
Bbox always like:

I am using OpenLayers with OSM and Geoportail. I display OSM at the bottom and Geoportail on top.

In France I have no problem but in others country Geoportail has no tiles for big zoom. In this case Geoportail return 404, openLayers keep the previous tile/image and zoom inside :/

I wish to hide the Geoportail tile when the tile doesn't exist, this way I will see the OSM tile.

Any idea how to do it ?

My code to add the both layers :

I've been looking everywhere for days about my issue, but still can't find a good solution to this problem.

I had to do a project using openlayers, to create maps that are included in iframes on different cities websites, to show some informations on WMS layers (graves status in cemeteries, trash sorting policy, etc).

Everything works fine, except for one thing. When I zoom in or out, my app does a request to get the new WMS layers, I can see the request coming back, with the good image, but it doesn't render the map automaticaly when the request comes back. It does work perfectly while paning or using the geolocation button.

My current workaround is to add a map.render() in the "moveend" event of the app, with an adjustable delay to wait for the request.

I'm using a config file to transmit the map default coordinates, zoom and layers, so I'm wondering if the problem doesn't come from that, since my WMS layers are all created in an each loop.

Since the informations of that project are confidential I have to hide everything, but here is my code :

scripts.js

Using the matplotlib backend, is it possible to add a tile basemap such as OSM to a GeoViewsplot, e.g. by somehow calling contextily? Using the Bokeh backend, this is done via gv.tile_sources and then adding it to an overlay but is there a similar function for the mpl backend?

Adding a reproducible example assuming one is switching between backends, and using neighbourhood-level polygon gdfs in EPSG:4326.

What made me initially think adding a basemap was not possible was (1) not defining the WMTS zoom level (causing undecipherable pixelated text to be plotted instead of features), and, after reading James' answer, (2) adding the tiles layer to the layout last, not first, which caused tiles to cover the polygons layers (not an issue on the bokeh backend, but with matplotlib apparently it does matter).

So I'm having some difficulties with using Tasks to handle loads of HTTP requests.

What I'm trying to do, is to create a large image from a WMTS. For those who don't know, a WMTS is a Web Map Tile Service. So basically, you can request image tiles that are 256x256 by sending a request with the correct tileRow and tileColumn. So in this case I'm trying to construct images that contains hundreds or even thousands of these image tiles.

To do this, I created an application that:

• calculates which tiles it needs to request based on input.
• creates a list that I can use to do the correct HTTP requests to the WMTS.
• sends these requests to the server and retrieves the images.
• stitches the images together into one large image. Which is the result that we want.

As you may imagine, the amount of tiles grows exponentially. This doesn't really impact the CPU work, but is mostly I/O bound work. So instead of waiting for each request to return, before sending the next one, I thought it would be a good idea to use Tasks for this. Create the tasks that will handle each individual request, and when all tasks are finished, construct the large image.

So this is the method where I already know what tiles I am going to request. Here I want to recursively send the requests with tasks until all the data is complete (eventually with a max retry mechanism).

I'm trying to import this XML https://wmts.geo.admin.ch/EPSG/2056/1.0.0/WMTSCapabilities.xml into google spreadsheets using the IMPORTXML function . using XPATH I would like to extract from

I am trying to show a WMTS layer, on an existing Open Street Map layer, using Open Layers. The WMTS layer is loaded, but it is in the wrong position (and the scale is off too).

I started with the official example, and adapted it to show the new WMTS, but I cannot get it to load correctly. The way I understand it there should be several sets of images for different coordinate systems, and the matrixSet switches between these. In the GetCapabilities xml the epsg:4326 is listed (and if I don't provide it, it does not load at all), so it should be available. My original OSM map should also be epsg:4326. I do not understand why the maps are not matching up and I would really appreciate your help!

This is my code thus far: