matteason / live-cloud-maps Goto Github PK

Hi,

I understand the problem of the missing data for the polar regions. And the need for the substitutions of these gaps.
Ont he other hand, most of Europe seems to be under clouds - all the time. I tried to compensate this using the cloud-threshold config value, but that does not really help.
I am using Xplanets mercator projection and it seems to me, that something like 50% of the data is actually static.
I think that this behavior had need been that way all the time, only since some months now.

Could that be correct or am I doing something wrong?

Regards,
Michael

There's a visible seam at the antimeridian where the source data doesn't quite reach the edges of the image. This is quite prominent when the image is wrapped round a sphere.

Over the poles we take a mirror image of the area below combined with a fade to solid white to compensate for missing data. Doing something similar here would probably only make the seam more obvious, so I'll need to do something smarter to infill the missing data. Need to ensure that the left edge is contiguous with the right edge so that it loops seamlessly.

Is there a way to access the creation time of the images? By this one could wait 3 hours before downloading a new file.

Currently the images do not contain EXIF data and the server response with this header:

t = 'https://clouds.matteason.co.uk/images/2048x1024/clouds.jpg'
response = requests.head(t, allow_redirects=True)
print(json.dumps(dict(response.headers), indent=4))

{
    "Date": "Sun, 07 Jan 2024 15:03:36 GMT",
    "Content-Type": "image/jpeg",
    "Content-Length": "453521",
    "Connection": "keep-alive",
    "last-modified": "Sun, 07 Jan 2024 14:40:10 GMT",
    "access-control-allow-origin": "*",
    "etag": "\"659ab7ca-6eb91\"",
    "expires": "Sun, 07 Jan 2024 14:56:22 GMT",
    "Cache-Control": "max-age=600",
    "x-proxy-cache": "MISS",
    "x-github-request-id": "D7A6:3CB921:4663A39:478CE79:659AB93E",
    "via": "1.1 varnish",
    "x-served-by": "cache-fra-eddf8230113-FRA",
    "x-cache": "MISS",
    "x-cache-hits": "0",
    "x-timer": "S1704638782.245013,VS0,VE116",
    "vary": "Accept-Encoding",
    "x-fastly-request-id": "d37c7c93eee1d54d41bbf3af796af759af214a7b",
    "CF-Cache-Status": "REVALIDATED",
    "Accept-Ranges": "bytes",
    "Report-To": "{\"endpoints\":[{\"url\":\"https:\\/\\/a.nel.cloudflare.com\\/report\\/v3?s=HcZUwe2O41bkdngpsz%2FeRquqDosFjSkMRrYWri%2FNvekWfdQ91DnaRhMtXxdsYvD7ussoKqgzLnrtu6yxtNp4Uii2pJvcg2uhh%2F%2BfiVW%2FXcUl8waPfh%2Bxc4MDJ5zSgU6C1N%2FfYWvlE3CW\"}],\"group\":\"cf-nel\",\"max_age\":604800}",
    "NEL": "{\"success_fraction\":0,\"report_to\":\"cf-nel\",\"max_age\":604800}",
    "Server": "cloudflare",
    "CF-RAY": "841d16a639d16d6e-MUC",
    "alt-svc": "h3=\":443\"; ma=86400"
}

Date is the time of downloading and last-modified seems to change every 30 minutes. It would be best, if this information were available in the header sent by the server. Of perhaps in a separate text/json file on the server.