1D data frame to 2D format in R

Question

My data is in a 1 column x 40000 row data frame. I would like to make it a 200 column x 200 row data frame. When I was using all numeric values, I used the code below to transform my vector into a matrix.

spematrix=data.matrix(spe) 
matrix = matrix(spematrix, nrow = 200, ncol=200) 

I cannot use this now though because my data contains non-numeric values (numbers separated by commas).

I am new to R and would appreciate any help.