I have a 5 x 600,000 matrix. I've had an idea to group the data so I want to group this matrix into submatrices based on the values in column 4. For ...

I am trying to figure out a way to multiply non-conformable arrays element-wise. I think this is a simple task, but I keep having problems. I have tw ...

I am attempting to create a gantt chart in Power Bi using the matrix view, and the end user wants it to have year, quarter, and month. The year and qu ...

I already asked a related question here, which was probably not sufficiently specified and thus the answers did not solve my problem. Will try to do i ...

I want to merge the headers of the matrix (FS is tab): like this: I tried this but it forms the following table which is not desired: ...

Consider the following fake example where I extract all comparisons corresponding to a name called A from a matrix called matr. The above implement ...

I want to merge the headers of the matrix: like this: I tried this and it didn't work (and it wasn't actually applicable to the larger matrix: ...

I have a matrix n*n with values along its diagonal. I would like to create a new matrix by multiplying elements of the diagonal matrix b, correspondin ...

I am faced with a problem I cannot quite figure out and I hope that someone might be able to help me with this. Its probably super easy but I am strug ...

. Answers to this question are eligible for a +200 reputation bounty. L ...

It has this error. May I know how to fix it, please? I mean do not change the elements in the data. Many thanks. I made the matrix in the same ...

I have an LDA model where I've got the per-document topic probability matrix as per below. How do I extract the topic ID with the largest probabili ...

i have the following data frame df columns: cell, cond_one, cond_two, pvt: string type value : float64 type i want to create columns based up on ...

let's say that I have the following function I know how to apply it to one element of a matrix: I would like now to apply it to all the element ...

I have a matrix, G (size PxN), and I would like to make the first N/2 columns of G form the N/2×N/2 identity matrix by row operations. Any idea how I ...

I would like to convert a vector to a symmetric hollow matrix but I am not really familiar with Matlab. For example: r2 = randi(10,276,1); and co ...

I would like to plot a function f(x1, x2) of two variables x1 and x2 in a 3D plot. The function is containted in a 2D matrix, with x1 forming the rows ...

Hi I am CS student with no prior experience in programming, my teacher gave me this exercise which involves reading a file like this: 3 4 2 1 1 1 2 3 ...

I need to loop through the following matrix and sum up values in each position where the column index or row index is equal to the value at the positi ...

I want to use this table: and make this matrix by using awk (or any other simple option in bash): I tried this but it didn't work: ...