issues: 1300534066
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id | node_id | number | title | user | state | locked | assignee | milestone | comments | created_at | updated_at | closed_at | author_association | active_lock_reason | draft | pull_request | body | reactions | performed_via_github_app | state_reason | repo | type |
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1300534066 | I_kwDOAMm_X85NhJMy | 6771 | Explaining xarray in a single picture | 703554 | open | 0 | 5 | 2022-07-11T10:47:55Z | 2022-07-20T09:41:07Z | CONTRIBUTOR | What is your issue?Hi folks, I'm working on a mini-tutorial introducing xarray for some folks in our genetics community and noticed something slightly confusing about the typical pictures used to help describe what xarray is for. E.g., this picture is commonly used: I get that temperature and precipitation are data variables which have been measured over the three dimensions of latitude, longitude and time. But I'm slightly confused here because I would've thought that latitude and longitude would be 1-dimensional coordinate variables, yet they are drawn as 2-D arrays? Elsewhere I found a slightly different version: This makes more sense to me, because here the 2-D arrays have been labeled as "elevation" and "land_cover", and thus these are variables which are measured over the dimensions of latitude and longitude but not time, hence 2-D. Also, here latitude, longitude and time are shown labelling the dimensions, which again makes a bit more sense. However, "elevantion" and "land_cover" are included within the "coordinates" bracket, and I would have thought that elevation and land_cover would be more naturally considered as data variables? Feel free to close/ignore/set me straight if I'm missing something here, but just thought I would raise to say that I was looking for a simple picture to help me explain what xarray is all about for newcomers and found these existing pictures a little confusing. |
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13221727 | issue |