Conversion from character array not supported. First, convert the character array to a cell array of character vectors using cellstr. Then convert the cell array using categorical. Conversion from table not supported. Extract data from one or more table variables into an array using dot or brace subscripting. Then convert the array to a categorical array. Conversion from N-D character array not supported. An ordinal array must be protected. VALUESET must have the same set of categories as DATA when DATA is an ordinal categorical array. VALUESET contains multiple missing values. Could not find unique values in VALUESET using the UNIQUE function. VALUESET contains duplicated values. Could not find unique values in DATA using the UNIQUE function. This operation would create a categorical array with more than {0,number,integer} categories. CATEGORYNAMES and VALUESET must have the same length. CATEGORYNAMES must have one element for each unique value in DATA. Unable to create a category name equal to the text ''{0}''.\nSpecify category names using the CATEGORYNAMES input argument. Unable to create a category name from empty or missing text.\nSpecify category names using the CATEGORYNAMES input argument. Unable to create default category names. Specify category names using the CATEGORYNAMES input argument. Unable to create default category names for undefined values in VALUESET. Specify category names using the CATEGORYNAMES input argument. Could not create default category names from VALUESET using its CHAR method. Could not create default category names from VALUESET using its CHAR method. The CHAR method did not create a character matrix with one row for each element of VALUESET. Could not create default category names from unique values in DATA using its CHAR method. Could not create default category names from unique values in DATA using its CHAR method. The CHAR method did not create a character matrix with one row for each unique value. Could not create unique category names from datetime array. Use a <a href="matlab:helpview([docroot '/matlab/ref/datetime.html#buhzxmk-1-Format'])">display format</a> with sufficient precision, or specify category names using the CATEGORYNAMES input argument. Could not create unique category names from duration array. Use a <a href="matlab:helpview([docroot '/matlab/ref/duration.html#mw_7dddd595-1be8-452b-8270-5589013aa7d4'])">display format</a> with sufficient precision, or specify category names using the CATEGORYNAMES input argument. Could not create unique category names. Specify category names using the CATEGORYNAMES input argument. VALUESET must be numeric when DATA is numeric. VALUESET must be the same class as DATA. VALUESET contains duplicated values when cast to logical. Could not compare values in DATA and VALUESET using the equality operator. Undefined function ''{0}'' for input arguments of type ''{1}''. Using {0} without assigning to a workspace variable does not modify the array's properties. Use C = {0}(C{1}). One or more of the arrays is categorical and either ordinal or protected, and the arrays do not all have the same sets of categories. Use ADDCATS to add new categories. Ordinal arrays must have the same categories, including their order. Relational comparisons are not allowed for categorical arrays that are not ordinal. Unable to concatenate a categorical array that is ordinal with one that is not. Unable to compare a categorical array that is ordinal with one that is not. Comparison is not defined between {0} and {1} arrays. Ordinal arrays must have the same categories, including their order. ()-indexing must appear last in an index expression. Cell contents reference from a non-cell array object. Attempt to reference field of non-structure array. To assign a categorical array into another, they must both be ordinal or not ordinal. Cannot add a new category ''{0}'' to this categorical array because its categories are protected. Use ADDCATS to add the new category. Right hand side of an assignment to a {0} array must be a {0} or text representing a category name. Cell contents assignment to a non-cell array object. Attempt to assign field of non-structure array. Attempt to reference field of non-structure array: ''{0}''. If you intended to call the {1} method, you must use a functional syntax such as {1}(c,...). See <a href="matlab:helpview(fullfile(docroot,'matlab/matlab_oop/method-invocation.html'))">Method Invocation</a> for more information. Attempt to reference field of non-structure array: ''{0}''. If you intended to call the {1} method, you must use a functional syntax. See <a href="matlab:helpview(fullfile(docroot,'matlab/matlab_oop/method-invocation.html'))">Method Invocation</a> for more information. {0} must be a string array or cell array of character vectors containing non-blank category names. {0} contains an invalid name ''{1}''. {0} contains an empty character vector or zero-length string. {0} contains duplicated values. Categorical arrays may not have empty columns, so data may only be added immediately to the right of existing variables.\nA new categorical variable will be added in the next available column. ''{0}'' is not a valid category name. If you intended to indicate an undefined categorical element, use empty ''''. If you intended to create a category, the name must not be ''{1}'' or ''{2}''. "{0}" is not a valid category name. If you intended to indicate an undefined categorical element, use empty '''' or string(nan). If you intended to create a category, the name must not be "{1}" or "{2}". ''{0}'' is not a valid category name. If you intended to indicate an undefined categorical element, use empty ''''. Code generation does not support adding categories through assignment. Code generation does not support sparse matrix inputs to the categorical function. In code generation, the first input to the categorical function must be a numeric, logical, or categorical array, or a cell array of char vectors. The {0} method is not supported for categorical in code generation. {0} must be a cell array of character vectors containing non-blank category names. Category names cannot contain duplicated values. The {0} type must be a logical scalar. The Categories type must be a cell column vector of nonempty character vectors.