Question: How can you merge more than two 10x datasets in Seurat?
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gravatar for DrAcula
9 days ago by
DrAcula0
University of Miami
DrAcula0 wrote:

I am trying to merge 3 datsets in seurat. I use the vignette on the seura website to merge 2 datasets however when I merge the 3rd t seems like the metadata isnt saved, however the head and tail of the data seem that its all being merged.

scrnaseq rna-seq 10x • 104 views
ADD COMMENTlink modified 9 days ago by Charles Warden6.5k • written 9 days ago by DrAcula0

when I merge the 3rd t seems like the metadata isnt saved

I'm not sure I completely understand what's going on -- could you perhaps post the results of str() on the individual files as well as the merged files and keep the commands you run in between as well?

ADD REPLYlink written 8 days ago by Friederike3.3k
0
gravatar for Charles Warden
9 days ago by
Charles Warden6.5k
Duarte, CA
Charles Warden6.5k wrote:

It's been a little while since I worked with a 10X dataset (I think they have a newer version of Seurat and cellranger).

However, when I needed to look at more than 2 datasets, I used the aggr function from cellranger.

Please note that you need to add --normalize=none to get counts similar to the separate quantifications (at least with the version of cellranger that I used).

So, I think the command should look something like this:

/path/to/cellranger-2.1.1/cellranger aggr --normalize=none --id=$AGGR_NAME --csv=$SAMPLE_FILE --localcores=12 --localmem=48

Again, I apologize if this is not exactly the right solution in the latest version of cellranger (or if Seurat has added functionality to accomplish this equally well).

ADD COMMENTlink written 9 days ago by Charles Warden6.5k
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