Comments (1)
Thanks @bnlawrence. I have noticed this issue too (being spammed by the message telling me a feature is being downloaded in cf-plot, at least).
I think this is more of a cf-plot issue, or at least a joint consideration, since the downloading happens directly (e.g. using interactive Python) with cf-plot, too, and isn't related to the UI aspects, so if you don't object I will move the Issue over to the cf-plot repo.
There is some code I have seen in the cf-plot script which I think is intended to try to cache any downloads, but I have my doubts as to whether it works given my recent experience with running scripts downloading Cartopy 'features' e.g. country borders and coastlines etc.:
where the pre_existing_data_dir
is designed to store that data (see the documented key here), and where data_dir
is the fallback according to those docs.
It might be that there is a central copy of such data in some sites, and it might be that one is using cartopy from within a container, as we do with the cf-view datatools container. In such cases it would be helpful to have a configuration option for cf-view to declare where the data is (or is wanted to be) so as to avoid repeated and/or unnecessary downloads.
I will investigate whether that code is doing anything and then we can think about how best to manage keeping downloaded data in a store generally, with support that will work for containers and as a site/group-wide approach and not just on an individual user basis, with cf-view in mind.
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