how to generate an scRNA counts file I have barcodes.tsv, genes.tsv and matrix.mtx file from my RNA seq data and I want to generate a scRNA counts files using R. When I tried using the readMM function, it gave me the following error: 

Error: cannot allocate vector of size 185.1 Gb. 


This happens even when I run it as a job. How can I generate a combined csv file using R?

Thank you.
I use the DropletUtils package from Bioconductor. Getting counts begins like this:

library(DropletUtils)
filePath &lt;- "path_to_data/raw_feature_bc_matrix/"
singleCellExperiment &lt;- read10xCounts(filePath, col.names = TRUE)