histcounts do not provide a reasonable output
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I have a 2D matrix, idx_matr_resh_single_tr_non_bool, size 15000x1, logical values, and I need to count the occurence of events within discrete time bins. The zeros represent no events, while ones represent events.
After performing this string of code:
tbin_edges = 60;
spikes_prova = histcounts(bool_matr,tbin_edges);
I get a weird result: it produce a matrix 60x1. After opening it, the total number of rows (15000) is displayed in the first row, then the array is filled with zeros. A couple of time I ended up with 14998 displayed in the first row and 2 in the last row.
I know, after computing them in the same matrix using sum function and after replacing logical with double, that there are a lot of events in this matrix.
I tried logical and double as well. I have no clue what's going on here
Rik on 26 Apr 2023
With Matlab you generally don't have to be confused about functions. The documentation is one of the major advantages of Matlab over competing products.
S=load('bool_matr.mat');data = S.idx_matr_resh_single_tr_non_bool;
To calculate the count per chunk you can use reshape and sum (which will automatically convert to double):
counts_per_chunk = sum(reshape(data,,60),2)
To calculate a sliding window sum, you can use movsum, but I prefer a convolution:
sliding_window_counts = conv(data,ones(1,60),'same')