Suggestions for the extraction of RNA_snn in large matrix

[wu-yc]

Hi Duanchen,

Thanks for inventing this fantastic algorithm.

In the Scissor function, the extraction of RNA_snn network <- as.matrix(sc_dataset@graphs$RNA_snn) might get improved. In the large expression✖️cell matrix (e.g. 100000 cells), the sc_dataset@graphs$RNA_snn is a sparse matrix and direct transfer it into as.matrx object will show the error

Error in asMethod(object) :
Cholmod error 'problem too large' at file ../Core/cholmod_dense.c, line 102

Is there any good solution to improve it? Thanks very much.

Best,
Yingcheng Wu