I created a Matrix visualization.
Rows: item number
Values: Stock value, an stock value2
How can I sort the stock value2? The Little triangle is not there to do it.
Once i remove the month columns i can sort them but it is not the solution what im looking for. I want to show the top 0-20
In a Matrix Vis you cannot sort on the column (in your case year-month), this has all to do with the fact that this is dynamic created. When you change your row values of year-month, you have more or less columns. For this reason it is not possible to select the column for sorting.