Get Expression Pca

Find gene expression PCA data.

• Returns gene expression PCA (principal component analysis) in tissues.

• Results may be filtered by tissue, sample, or dataset.

By default, the service queries the latest GTEx release.

GTEx Portal API documentation

Usage

get_expression_pca(
  tissueSiteDetailIds,
  datasetId = "gtex_v8",
  sampleId = NULL,
  page = 0,
  itemsPerPage = 250
)

Arguments

tissueSiteDetailIds

Character vector of IDs for tissues of interest. Can be GTEx specific IDs (e.g. "Whole_Blood"; use get_tissue_site_detail() to see valid values) or Ontology IDs.

datasetId

String. Unique identifier of a dataset. Usually includes a data source and data release. Options: "gtex_v8", "gtex_snrnaseq_pilot".

sampleId

String. ^GTEX-[A-Z0-9]{5}-[0-9]{4}-SM-[A-Z0-9]{5}$

page

Integer (default = 0).

itemsPerPage

Integer (default = 250).

Value

A tibble.

See also

Other Expression Data Endpoints: get_clustered_median_exon_expression(), get_clustered_median_gene_expression(), get_clustered_median_junction_expression(), get_clustered_median_transcript_expression(), get_gene_expression(), get_median_exon_expression(), get_median_gene_expression(), get_median_junction_expression(), get_median_transcript_expression(), get_single_nucleus_gex(), get_single_nucleus_gex_summary(), get_top_expressed_genes()

Examples

if (FALSE) { # \dontrun{
get_expression_pca(tissueSiteDetailIds = c("Adipose_Subcutaneous",
                                           "Whole_Blood"))

get_expression_pca(tissueSiteDetailIds = "Adipose_Subcutaneous",
                   sampleId = "GTEX-1117F-0226-SM-5GZZ7")
} # }