Renaming of column names (and row names) of a DoubleMatrix is reset after some time

[vdorfer]

In the NSGA-II a DoubleMatrix represents the resulting pareto front. After renaming the column names of this matrix the correct headers are shown, however quickly reset to "Objective 1", "Objective 2",... This whole process is performed each generation leading to a flickering of the view. Renaming is performed by:

DoubleMatrix front = new DoubleMatrix(frontSize, objectives);
front.ColumnNames = colNames;
if (results.ContainsKey("Pareto Front"))
  results["Pareto Front"].Value = front;
else results.Add(new Result("Pareto Front", front));

Removing the second line of code leads to name changings from "Objective 1", "Objective 2",... to "Column 1", "Column 2". Row names change from "Solution 1" to "Row 1".

[mkommend]

I don't think that the issue is still present in the current version of HL 3.3.8. Could you please check the behavior and eventually close the ticket.

[abeham]

I don't know how the columns get named to B, C, D. Can you check if this is still the case vdorfer?

[gkronber]

Replying to abeham:

I don't know how the columns get named to B, C, D. Can you check if this is still the case vdorfer?

Renaming is not possible through the GUI but only through code. See the code in the ticket description.

[gkronber]

The reason for this behavior is that the Pareto-front is updated in each generation.

We should not allow users to change 'results'. I.e. results should be read-only even if the algorithm is pause.

Instead users should change the names of objectives in the problem parameters and these objective names should also be shown in the result.