Re: [gdal-dev] How to wrap a zarr in a zip and read it with vsizip?

2025-02-27 Thread Michael Sumner via gdal-dev
nice, I've been hitting that up with the multidim model and it works pretty well. (i'm still scratchy in the C++ but getting what I want out of it). We were checking out CMIP6 holdings too that look similarly impressive. M On Thu, Feb 27, 2025 at 5:27 PM Kurt Schwehr wrote: > Mike, > > That's

Re: [gdal-dev] How to wrap a zarr in a zip and read it with vsizip?

2025-02-27 Thread Laurențiu Nicola via gdal-dev
Hi, While I agree with the sentiment, I'm not sure I agree about some of the details. It assumes that on ZARR ZIPs, you need to make twice as many reads, for the local file headers and for the data. But the information in the local header is already available in the central directory, so you ca

Re: [gdal-dev] How to wrap a zarr in a zip and read it with vsizip?

2025-02-27 Thread Laurențiu Nicola via gdal-dev
Agreed, I know I'm heavily biased myself towards a little corner of tech. PS: I raised the issue of the local headers in https://github.com/csaybar/ESA-zar-zip-decision/issues/5, if you want to follow. On Thu, Feb 27, 2025, at 12:07, Michael Sumner wrote: > Agree with all this, unfortunately xar

Re: [gdal-dev] How to wrap a zarr in a zip and read it with vsizip?

2025-02-27 Thread Michael Sumner via gdal-dev
Agree with all this, unfortunately xarray was a bit late with PR 9543 that provides a basis for implicit coordinates (and will hopefully feed down into Zarr), and knowing the difference from the low basis NetCDF provided. There's a lot to it, but my read is that xarray is the new and way better Ne