Seurat CCA, AlignSubspace, Argument dist.method is only useful with multivariate timeseries I am trying to combine two datasets to be able to compare the cells in them and using Seurat CCA for it:

https://satijalab.org/seurat/Seurat_AlignmentTutorial.html

When I am running AlignSubspace function I am getting a warning for each single dimension that I selected it to be run on:

seurat_union &lt;- AlignSubspace(object = seurat_union, reduction.type = 
    "cca", grouping.var = "protocol", dims.align = 1:13) 


So, I am getting 13 warnings:

&gt; warnings()
Warning messages:
1: In dtw(x = align.1, y = align.2, keep.internals = TRUE,  ... :
Argument dist.method is only useful with multivariate timeseries
2: In dtw(x = align.1, y = align.2, keep.internals = TRUE,  ... :
Argument dist.method is only useful with multivariate timeseries
3: In dtw(x = align.1, y = align.2, keep.internals = TRUE,  ... :
Argument dist.method is only useful with multivariate timeseries
4: In dtw(x = align.1, y = align.2, keep.internals = TRUE,  ... :
Argument dist.method is only useful with multivariate timeseries
5: In dtw(x = align.1, y = align.2, keep.internals = TRUE,  ... :
Argument dist.method is only useful with multivariate timeseries
6: In dtw(x = align.1, y = align.2, keep.internals = TRUE,  ... :
Argument dist.method is only useful with multivariate timeseries
7: In dtw(x = align.1, y = align.2, keep.internals = TRUE,  ... :
Argument dist.method is only useful with multivariate timeseries
8: In dtw(x = align.1, y = align.2, keep.internals = TRUE,  ... :
Argument dist.method is only useful with multivariate timeseries
9: In dtw(x = align.1, y = align.2, keep.internals = TRUE,  ... :
Argument dist.method is only useful with multivariate timeseries
10: In dtw(x = align.1, y = align.2, keep.internals = TRUE,  ... :
Argument dist.method is only useful with multivariate timeseries
11: In dtw(x = align.1, y = align.2, keep.internals = TRUE,  ... :
Argument dist.method is only useful with multivariate timeseries
12: In dtw(x = align.1, y = align.2, keep.internals = TRUE,  ... :
Argument dist.method is only useful with multivariate timeseries
13: In dtw(x = align.1, y = align.2, keep.internals = TRUE,  ... :
Argument dist.method is only useful with multivariate timeseries


What is this warning telling me? What should I pay attention to with my datasets?
I don't have enough reputation to comment so I will briefly answer here

This warning is fixed in Seurat 2.3.2. Without upgrading you can ignore this message. It doesn't mean anything for the actual analysis performed so your results won't be flawed.