2.2.4.5.6 Column::GetCategoricalMap

GetCategoricalMap

1 Description
2 Syntax
3 Example
4 Remark
5 See Also
6 Header to Included

Description

Get the column which stores the Categorical Map.

Syntax

CategoricalMap GetCategoricalMap()

Example

Run the following code with a worksheet active and print out if a column is categorical or not.

void check_is_categorical()
{
	Worksheet wks=Project.ActiveLayer();
	for(int ii=0;ii<wks.GetNumCols();ii++)
	{
		Column cc = wks.Columns(ii);
		CategoricalMap cmap = cc.GetCategoricalMap();
		printf("%d: column %s ", ii, cc.GetName());
		if(cmap)
			printf("is categorical\n");
		else
			printf("is NOT categorical\n");
	}       
}

The following example shows how to use it on worksheet columns

void MyCategoricalMap()
{ 
    Worksheet wks=Project.ActiveLayer();
    if (wks)
    { 
		vector<string> vstrKey={"aa", "cc", "bb", "dd"};  //design your own categories map
		for(int ii=0;ii<5;ii+=2){
		wks.Columns(ii).SetAsCategorical(CMT_NOMINAL); //set column into categorical with normal mode
                wks.Columns(ii).GetCategoricalMap().ReplaceMap(vstrKey);  //update the categorical map
		}       
    }
}