Variable manipulators
| array_append_record | Attaches [appends] additional records [leftmost dimension] to a previously existing array. |
| delete | Deletes variables, attributes, and coordinate variables. |
| new | Creates an NCL variable. |
| replace_ieeenan | Changes all occurrences of IEEE NaN to a user-specified value. |
| table_attach_columns | Attaches [appends] additional columns to a previously existing two-dimensional array. |
| table_attach_rows | Attaches [appends] additional rows to a previously existing two-dimensional array. |
| undef | Undefines defined NCL symbols. |