error in update_spatial_parallel

[fxpena]

Hi I'm using the demo for large_data_1p. After initializing the residual, the script does update_spatial_parallel and I got a warning:

Warning: Matrix is singular to working precision.

In com (line 24)
In determine_search_location (line 58)
In Sources2D/update_spatial_parallel (line 66)

Then an error:

Error using determine_search_location (line 66)
Input matrix contains NaN or Inf.

Error in Sources2D/update_spatial_parallel (line 66)
IND = sparse(logical(determine_search_location(obj.A, search_method, options)));

I'm having trouble understanding why this error occurs and what it means. Does it have to do with the step where neurons are picked from the residual? The seeds that were picked in that step hardly coincide with the seeds picked during initialization.

[edonzis]

I'm having the same issue, but I'm running msRunCNMFE_large. When I track down the error it seems that the coordinates (??) for some of the neurons end up being NaN. The error comes in the parafor loop starting at line 66 of determine_search_location.m.
When trying to execute line 69 "[V,D] = eig(Vr{i});" Vr{i} is NaN because cm(i,1) in the previous line is NaN. Is there an easy way to remove neurons that are listed as NaN? I'm not sure the root cause of these neurons being listed as NaN.