Stamen watercolor tile requests send back HTTP Error 404

[wckoeppen]

Description

Attempting to use the cartopy.io.img_tiles.Stamen tiles with the watercolor style sends back an HTTP Error 404: Not Found error.

It looks like the Stamen tile urls may have changed slightly? This code asks for

f'http://tile.stamen.com/{self.style}/{z}/{x}/{y}.png'

These requests get redirected to https://tiles.stadiamaps.com/styles/, and it looks like the watercolor tiles are only made available there as jpg, not png. (Other tilesets are available in both formats.)

Doesn't work: https://tiles.stadiamaps.com/styles/stamen_watercolor/12/1104/1625.png Works: https://tiles.stadiamaps.com/styles/stamen_watercolor/12/1104/1625.jpg

Code to reproduce

import matplotlib.pyplot as plt
import cartopy.io.img_tiles as cimgt

request = cimgt.Stamen(style='watercolor')

fig = plt.figure()
ax = fig.add_axes([0,0,1,1], projection=request.crs)
ax.set_extent([-83.35, -83.30, 34.85, 34.90])
img = ax.add_image(request, 14)
plt.show()

Operating system

Mac OS Ventura 13.4.1

Cartopy version

0.21.1

conda list

  - numpy
  - gpxpy
  - python=3.10
  - shapely
  - geopandas
  - matplotlib
  - tqdm
  - cartopy
  - pandas
  - jupyterlab

[lgolston]

Thanks @wckoeppen for reporting! I don't know if the png version is still available or not, but jpg seems to be the primary version of watercolor so we should look at using that. More broadly, could be handled something like in openlayers: link

[rcomer]

I think this one is fixed by #2202?

[dopplershift]

I think so. This should be fixed either by running main or installing the next release when it becomes available. If you find that's not the case, feel free to re-open.

[wckoeppen]

Thanks everyone. Much appreciated!