abs function not working in matlab while reading table and cell array

TABLE2ARRAY Convert table to a homogeneous array. A = TABLE2ARRAY(T) converts the table T to an array A whose type depends on the data in T. All variables in T must have sizes and types that are compatible for horizontal concatenation. If T is an M-by-N table with variables that each have one column, then each variable becomes one column in A. Variables in T that have more than one column become multiple columns in A, and A has L = SUM(TABLEFUN(@(V)SIZE(V,2),T) columns. Variables in T may have different numbers of columns. Variables in T may be N-D, but all must have the same size in dimensions higher than 2. A is N-D in this case. NOTE: TABLE2ARRAY horizontally concatenates the variables in T to create A. If the variables in T are cell arrays, TABLE2ARRAY does not concatenate their contents -- A is in this case a cell array, equivalent to TABLE2CELL(T). To create an array containing the contents of variables that are all cell arrays, use CELL2MAT(TABLE2CELL(T)). TABLE2ARRAY(T) is equivalent to T{:,:}. See also ARRAY2TABLE, TABLE2CELL, TABLE2STRUCT, TABLE. Documentation for table2array doc table2array Other uses of table2array codistributed/table2array tall/table2array