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2afbdbd18f
The XArray implementation that uses Zarr for storage provides a mechanism to simulate named dimensions. It does this by adding a per-variable attribute called _ARRAY_DIMENSIONS. This attribute contains a list of names to be matched against the shape values of the variable. In effect a named dimension is created with the name _ARRAY_DIMENSIONS(i) and length shape(i) for all i in range 0..rank(variable). Both read and write support is provided. This XArray support is only invoked if the mode value of "xarray" is defined. So for example, as in this URL. ```` https://s3.us-west-1.amazonaws.com/bucket/dataset#mode=nczarr,xarray,s3 ```` Note that the "xarray" mode flag also implies mode flag "zarr", so the above is equivalent to this URL. ```` https://s3.us-west-1.amazonaws.com/bucket/dataset#mode=nczarr,zarr,xarray,s3 ```` The primary change to implement this was to unify the handling of dimension references in libnczarr/zsync. A test for this and other pure-zarr features was added as nczarr_test/run_purezarr.sh Other changes: * Make sure distcheck leaves no files around. * Change the special attribute flag DIMSCALEFLAG to HIDDENATTRFLAG to support the xarray attribute. * Annotate the zmap implementations with feature flags such as WRITEONCE (for zip files). |
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| .. | ||
| obsolete | ||
| awsincludes.h | ||
| CMakeLists.txt | ||
| Makefile.am | ||
| SimpleBinStream.h | ||
| zarr.c | ||
| zarr.h | ||
| zattr.c | ||
| zcache.c | ||
| zcache.h | ||
| zchunking.c | ||
| zchunking.h | ||
| zclose.c | ||
| zcreate.c | ||
| zcvt.c | ||
| zdebug.c | ||
| zdebug.h | ||
| zdim.c | ||
| zdispatch.c | ||
| zdispatch.h | ||
| zfile.c | ||
| zfilter.c | ||
| zgrp.c | ||
| zincludes.h | ||
| zinternal.c | ||
| zinternal.h | ||
| zjson.c | ||
| zjson.h | ||
| zmap_file.c | ||
| zmap_s3sdk.c | ||
| zmap_zip.c | ||
| zmap.c | ||
| zmap.h | ||
| zodom.c | ||
| zodom.h | ||
| zopen.c | ||
| zprov.c | ||
| zprovenance.h | ||
| zs3sdk.cpp | ||
| zs3sdk.h | ||
| zsync.c | ||
| ztracedispatch.h | ||
| ztype.c | ||
| zutil.c | ||
| zvar.c | ||
| zwalk.c | ||
| zxcache.c | ||