Error while loading custom data in NCEM

[archanabhardwaj]

Hello

I am trying to run NCEM after running the deconvolution in cell2location method. I followed entire workflow as given in https://github.com/theislab/ncem_benchmarks/blob/main/notebooks/data_preparation/deconvolution/cell2location_human_lymphnode.ipynb and saved dataset as "cell2location_test.h5ad" based on the information given in the "Collect ncem anndata object" section. Next, I tried to read h5ad data into NCEM for further analysis with custom loader function.

adata_vis # stores information of my cell2location_test.h5ad file

ncem = InterpreterInteraction()

ncem.data = customLoader(
adata=adata_vis, cluster='cell_type', patient='A1', library_id='sam_A1', radius=52
)

But its giving me error such as AttributeError: 'numpy.ndarray' object has no attribute 'toarray'

If I am doing something wrong, please correct me.

Thanks in advance

[AnnaChristina]

Hi @archanabhardwaj,

thank you for your interest in running ncem on your own data.

Please store .X as sparse matrix format and the stated code will work. However, the stated tutorial is specifically designed for targeted spatial omics data. You can still use the stated tutorial, but we will also push a specific tutorial for deconvoluted visium soon.

[AnnaChristina]

I am closing the issue for now, but feel free to open it again in case of further questions.