I have a matrix of n*m dimension. I wanted to count the number of columns in a row which has a value greater than "X". How to do this in R? Please let me know.
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You can try
rowSumsexplanation
m1 > Xwill create aTRUE/FALSElogical matrix. SinceTRUEvalues are treated as1andFALSEvalues are treated as0,rowSums(m1 > X)will give you a count for each row of the number of values in that row that is greater thanX.data