sort_tr2g: Sort transcripts to the same order as in kallisto index
In BUSpaRse: kallisto | bustools R utilities

Description Usage Arguments Details Value Note See Also Examples

This function takes the data frame output from the tr2g_* family of functions in this package as the input, and sorts it so the transcripts are in the same order as in the kallisto index used to generate the bus file. Sorting is vital to obtain the correct sparse matrix from the bus file as equivalence class notations are based on the index of transcripts in the kallisto index.

1	sort_tr2g(tr2g, file, kallisto_out_path)

`tr2g`	The data frame output from the `tr2g_*` family of functions.
`file`	Character vector of length 1, path to a tsv file with transcript IDs and the corresponding gene IDs, in the format required for `bustools`, or written by `save_tr2g_bustools`.
`kallisto_out_path`	Character vector of length 1, path to the directory for the outputs of kallisto bus.

Since the attribute field of GTF and GFF3 files varies across sources, output from tr2g_gtf and tr2g_gff3 may need further clean up. You may also supply gene and transcript IDs from other sources. This function should be used after the clean up, when the transcript IDs in the cleaned up data frame have the same format as those in transcript

A data frame with columns transcript and gene and the other columns present in tr2g or the data frame in file, with the transcript IDs sorted to be in the same order as in the kallisto index.

This function has been superseded by the new version of tr2g_* functions that can extract transcriptome for only the biotypes specified and with only the standard chromosomes. The new version of tr2g_* functions also sorts the transcriptome so the tr2g and the transcriptome have transcripts in the same order.

Other functions to retrieve transcript and gene info: tr2g_EnsDb(), tr2g_TxDb(), tr2g_ensembl(), tr2g_fasta(), tr2g_gff3(), tr2g_gtf(), transcript2gene()

toy_path <- system.file("testdata", package = "BUSpaRse")
file_use <- paste(toy_path, "gtf_test.gtf", sep = "/")
tr2g <- tr2g_gtf(file = file_use, get_transcriptome = FALSE,
  write_tr2g = FALSE, save_filtered_gtf = FALSE, transcript_version = NULL)
tr2g <- sort_tr2g(tr2g, kallisto_out_path = toy_path)