Error loading paramSweep_v3 in DoubletFinder in R

Question

I am trying to run DoubletFinder on a seurat object resulting from the integration of various data.

The integrated seurat object have been fully processed:

1. Normalization and FindVariableFeature pre-integration

2. ScaleData, RunPCA, FindNeighbors, FindClusters, RunUMAP on the integrated object.

However when I run, paramSweep_v3() function of DoubletFinder gives me an error even though DoubletFinder is successfully installed and loaded [library(DoubletFinder)]:

sweep.res.list_pbmc <- paramSweep_v3(data.seurat.filtered, PCs = 1:20, sct = FALSE)

Error in paramSweep_v3(data.seurat.filtered, PCs = 1:20, sct = FALSE) : 
  could not find function "paramSweep_v3"

How do I get DoubletFinder paramSweep_v3 function to work?

Answer 1

In older versions of DoubletFinder, paramSweep works for me as shown below;

sweep.res.list_pbmc <- paramSweep(data.seurat.filtered, PCs = 1:20, sct = FALSE)

Nevertheless, you can always download any specific function from the repository and include it in the existing package.