matlab sliced variable

Make sure the following requirements are satisfied:

• Type of First-Level Indexing — The first level of indexing is either parentheses, (), or braces, {}.
• Fixed Index Listing — Within the first-level parenthesis or braces, the list of indices is the same for all occurrences of a given variable.
• Form of Indexing — Within the list of indices for the variable, exactly one index involves the loop variable.
• Shape of Array — In assigning to a sliced variable, the right-hand side of the assignment is not [] or '' (these operators indicate deletion of elements).