2.2.4.6.17 DataObject::SetMissingValue

SetMissingValue

1 Description
2 Syntax
3 Parameters
4 Return
5 Examples
6 Remark
7 See Also
8 Header to Include

Description

Set the missing value of the DataObejct.

Syntax

BOOL SetMissingValue( LPVOID pVal = NULL )

Parameters

pVal: [input] point to the data to be set as missing value, the size of data should be same as data size of the data oboject.; NULL to clear internal buffer, which means missing value cannot be 0.

Return

True for success; otherwise false.

Examples

EX1

void DataObject_SetMissingValue_Ex1()
{
   	WorksheetPage     wksPage;
    wksPage.Create("origin");
    Worksheet     wks = wksPage.Layers();
 
    Column     col(wks, 0);
    if(col)
    {
	    vector& vec = col.GetDataObject();
	    double     dMissing = 1e-10; // defined by user
		vec.Data(1, 10, 1);
	    vec[0] = dMissing;
        bool    bb = col.SetMissingValue(&dMissing);
        Dataset ds(col);
        if(bb && ds.GetSize() > 0 && is_equal(dMissing, ds[0]) )    
            printf("Fill in missing values to col %s successfully.\n", col.GetName());
        else
            printf("Fail to set missing!\n");
        
    }
}

EX2

void DataObject_SetMissingValue_Ex2()
{
	MatrixPage mp;
	mp.Create("origin");
    MatrixLayer ml = Project.ActiveLayer();
    if ( !ml )
    {
        printf("Can not access active matrixsheet");
        return;
    }
    MatrixObject mo = ml.MatrixObjects(0); //get first matrixobject
    double dMiss = 1e-12;
    mo.SetMissingValue(&dMiss);
    if ( mo.GetMissingValue(&dMiss) )
        printf("Missing value in this matrixobject is set as %.15lf\n", dMiss);
}