Must have numeric data in the pie chart. At least 1 value must be nonnegative. Ignoring negative data. All data must be finite in pie chart. Text labels must be a string or a cell array of character vectors. First argument must be categorical array with at least 1 nonempty category. Labels must be a string or cell array of character vectors with same number of elements as categories, or be a valid format string. Labels must have the same number of elements as X or be a valid format string. X and EXPLODE must be the same length. Specify exploded slice with category names or logical indices. Explode specified as logical vector must have same number of elements as that of categories. Explode contains invalid category names.