Analytics.DataFrame.getColumn()
Signature
Object[] getColumn(Object dataFrame, int columnIndex)
Description
Returns the column specified by the column number from the data frame object.
If the column number specified is incorrect returns null value.
Parameters
| Name | Type | Description |
|---|
dataFrame | Object | A TerrDataFrame type of Object |
columnIndex | int | The column number to be retrieved from the data frame |
Returns
| Type | Description |
|---|
Object[] | The column retrieved from the TerrDataFrame Object.
If an incorrect column number is passed then a null Object is returned. |
Example
Object cust = Analytics.DataFrame.createFrame(names, data);
int columnNumber = 1;
Object[] col1 = Analytics.DataFrame.getColumn(cust,columnNumber);
When the getColumn returned is of type Factor, then the returned Object[] has a String array and an Integer array as the values returned
Usage when the column is a factor should be as follows:-
Object[] data = Analytics.DataFrame.getColumn(df,1);
String[] data0 = data[0];
int[] data1 = data[1];
The array data0 contains all unique elements and the array data1 represents the Levels.