MATLAB: How to skip legend names if their values equal zero on particular piechat

Question

I am using the following code to plot piechart

labels = {Costs.name};
pie([Costs.GESAMT_ohne_D_Money_min]);
legend(labels);

Sometimes Costs.GESAMT_ohne_D_Money_min could have zero values so they are not printed on pie chart. Because of that labeling becomes wrong as it is not skipping the non-positive values.

How to fix that?

Answer 1

Try this:

zeroIndexes = [Costs.GESAMT_ohne_D_Money_min] <= 0
labels2 = labels(zeroIndexes);  % Extract only the non-zero numbers.

pieData =  [Costs.GESAMT_ohne_D_Money_min]; % Initialize
pieData = pieData(zeroIndexes); % Extract only the non-zero numbers.
pie(pieData);
labels(labels2);