How to send query loom files through gene names and not through Gene ID

[abhisheksinghnl]

Hi,

Presently, I can generate the loom files and can also upload them in SCOPE to visualise them

I am generating the loom files as follows:

```{r scRNALoomGeneration, echo=FALSE, message=FALSE, warning=FALSE, include=TRUE, warnings=FALSE, eval=TRUE, results="asis"}
                                                      for ( i in 1:length(paths))
                                                      {
                                                        dgem <- counts(sce_list[[i]])
                                                        dim(dgem)
                                                        class(dgem)
                                                        head(colnames(dgem))
                                                        cell.info <- colData(sce_list[[i]])
                                                        cell.info$nGene <- Matrix::colSums(dgem>0)
                                                        sum(sce_list[[i]]$total_counts)
                                                        default.tsne <- sc_list[[i]]
                                                        default.tne.name <- "t-SNE on full expression matrix"
                                                        head(default.tsne)
                                                        tsne<-reducedDim(sc_list[[i]], "TSNE")[,1:2]
                                                        file.name<-paste0("file",i,".loom")
                                                        dgem.subset<-as.matrix(x=dgem)[, row.names(tsne)]
                                                        build_loom(file.name=file.name,
                                                                   dgem=dgem.subset,
                                                                   title="Fake expression dataset for examples",
                                                                   genome="Mouse", # Just for user information, not used internally
                                                                   default.embedding=tsne,
                                                                   default.embedding.name=default.tne.name)
                                                        
                                                      }

The above is an code chunk from Rmarkdown.

However, I can only navigate in the SCOPE using GeneID and not gene symbol.
Could you please let me know, how to incorporate the Gene Symbols and to use them to navigate through the loom files.

Many thanks for your help.

Best regards
Abhishek

[dweemx]

Currently, It is only possible to query genes by the values save in the Gene row attribute of a Loom. By default, SCopeLoomR stores the row.names of the dgem (argument of the build_loom function) as Gene.
If you would like to query based on the gene symbols, you would have to set the row.names of the dgem to the corresponding gene symbols.