issue_comments: 375054212

This data as json

html_url issue_url id node_id user created_at updated_at author_association body reactions performed_via_github_app issue
https://github.com/pydata/xarray/issues/2004#issuecomment-375054212 https://api.github.com/repos/pydata/xarray/issues/2004 375054212 MDEyOklzc3VlQ29tbWVudDM3NTA1NDIxMg== 579593 2018-03-21T18:44:14Z 2018-03-21T18:44:14Z NONE

netcdf4-python does reopened[::1, ::10] by making a bunch of calls to the C lib routine nc_get_vara. As pointed out in Unidata/netcdf4-python#680, this is faster than a single call to nc_get_vars (which does strided access, but is very slow). Note that reopened[::1, ::1][:,::10] is very fast, but you have to have enough memory to hold the entire array. I wonder how h5netcdf is reading the data - is it pulling the entire array into memory and then selecting or subset?

 
{
    "total_count": 0,
    "+1": 0,
    "-1": 0,
    "laugh": 0,
    "hooray": 0,
    "confused": 0,
    "heart": 0,
    "rocket": 0,
    "eyes": 0
}
   307318224