title: How to convert a column of a csv file to a matrix and draw a plot for it?
body: <p>I have a csv file. I want to separate just one column of it and develop a matrix of it and draw a heatmap plot using the matrix.</p>
  
  <p>For example, if I have 20 rows in the column I would like to make 10x2 matrix, which means 10 columns per row (from first to 10th row in csv file) in matrix and then the next 10 rows should be presented as columns of 2nd row.</p>
  
  <p>Then, I want to draw a heatmap plot using holoviews which represents the matrix.</p>