Data Set Model: _describeColumns

Data Set Model: _describeColumns

Copies column attributes into a data vector

Syntax
Details

Syntax

CALL SEND (object-id, '_describeColumns', datavector-id, numcols<, startcol>);

Argument Type Description

datavector-id
N specifies the object identifier of an instance of the Data Set Data Vector class

numcols
N specifies the number of columns to describe

startcol
N specifies the column number where descriptions should start

Argument	Type	Description
datavector-id	N	specifies the object identifier of an instance of the Data Set Data Vector class
numcols	N	specifies the number of columns to describe
startcol	N	specifies the column number where descriptions should start

Details

Column descriptions are stored in the Data Set Data Vector instance and are accessed using methods of the Data Set Data Vector class.

The _describeColumns method initializes the Data Set Data Vector instance with the format, informat, label, name, and type for the specified columns. See the Data Set Data Vector class for more information on how to access or override these attributes.

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