First argument must be a vector or 2-dimensional matrix. Complex integers are not supported. Input argument of type cell array is not supported. Column sorting vector must contain integers with absolute value between 1 and the number of columns in the first argument. Second argument must specify a sort direction or a vector of columns indices. Sorting direction must be ''ascend'', ''descend'', ''monotonic'', ''strictascend'', ''strictdescend'', or ''strictmonotonic''. Parameter name must be 'ComparisonMethod' or 'MissingPlacement'. Incorrect number of arguments. Parameter names and values must occur in pairs. Sorting direction must specify one direction or a direction for each column in the first argument. Sorting direction must specify one direction or a direction for each element of the column sorting vector. Second argument must specify a column sorting vector or sorting direction. Sorting direction must be a character vector or cell array of character vectors. ''ComparisonMethod'' parameter not supported when first argument is a {0} array. ''ComparisonMethod'' value must be ''auto'', ''abs'', or ''real''. ''MissingPlacement'' parameter not supported when first argument is a {0} array. ''MissingPlacement'' value must be ''auto'', ''first'', or ''last''.