I’m trying to extract GTEx samples from the ARCHS4 HDF5 file but haven’t found a metadata field that reliably flags GTEx origin, none of the /meta/samples/source_name_ch1, characteristics_ch1, or geo_accession entries seem to match “GTEx” consistently; could you please clarify which metadata attribute uniquely identifies GTEx samples and how best to filter for them?
I’m trying to extract GTEx samples from the ARCHS4 HDF5 file but haven’t found a metadata field that reliably flags GTEx origin, none of the
/meta/samples/source_name_ch1,characteristics_ch1, orgeo_accessionentries seem to match “GTEx” consistently; could you please clarify which metadata attribute uniquely identifies GTEx samples and how best to filter for them?