Hi, I'm trying to follow tutorial 1 on http://cole-trapnell-lab.github.io/monocle-release/monocle3/#tutorial-1-learning-trajectories-with-monocle-3, but when I try to use the functions estimateSizeFactors() on my CellDataSet, I get the error Error in (function (classes, fdef, mtable) : unable to find an inherited method for function ‘estimateSizeFactors’ for signature ‘"cell_data_set"’. I get the same error when trying to use the function estimateDispersions().

All I've done so far is (for as far as I am aware) successfully created a CellDataSet using the new_cell_data_set function..

I am using monocle3 0.2.2

My cds:

class: cell_data_set 
dim: 27998 6945 
metadata(1): cds_version
assays(1): counts
rownames(27998): ENSMUSG00000051951
  ENSMUSG00000089699 ... ENSMUSG00000096730
  ENSMUSG00000095742
rowData names(2): ENSID gene_short_name
colnames(6945): AAACCTGAGGCTATCT-1
  AAACCTGCACCAGGTC-1 ... TTTGTCATCATTTGGG-3
  TTTGTCATCCACTCCA-3
colData names(2): Cell Size_Factor
reducedDimNames(0):
spikeNames(0):
altExpNames(0):

Does anyone have any idea why it's not working?

Thanks!