The operation connects classes to a classified data frame. If a frame does not exist it will be created. The command can also be used to add classes to an existing frame.
The operation collects all the classes of the given classified data to a target classified data.
Example (ex2.1): The command select has been used to connect two classes "class1" and "class3" to a new classified data "cldata2". (For creating classes see Section 2.15.) Run first the example `ex2.1' and then apply the following commands:
... # create data classes NDA> addcld... ... NDA> ls -u -fr ... c cldata1 cl cldata1.class1 cl cldata1.class2 cl cldata1.class3 NDA> select cldata2 -cl cldata1.class1 cldata1.class3 # add more classes NDA> select cldata2 -cl cldata1.class2 NDA> select cldata3 -c cldata1
