2.1.17.2.6.6 xaty50

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

Description

Get the interpolated value of X at the average of minimum and maximum of Y values of a curve.

Syntax

double xaty50( Curve & crv )

Parameters

crv: [input] Origin C Curve object

Return

Returns the interpolated value of X at the average of minimum and maximum of Y values of a curve.

Examples

EX1

// This is a self contained sample program for the function xaty50, 
// Its sample data is created at the beginning of the program. 
// To run the program, enter the following command in the Script window:
//   xatY50_ex1
// It returns like:
//   X at the average of min & max of Y(Data4_B) = 7.05116

void xaty50_ex1()
{
    double dXatY50;

    Worksheet wks;
    wks.Create();
    Dataset myXDs(wks,0);
    Dataset myYDs(wks,1);
    String strYName = myYDs.GetName();
    
    //******* Create sample data *****************
    myXDs.SetSize(8);
    myYDs.SetSize(8);
    myXDs[0]=1;    myYDs[0]=0;        
    myXDs[1]=2;    myYDs[1]=0.2476;
    myXDs[2]=3;    myYDs[2]=0.24909;
    myXDs[3]=4;    myYDs[3]=0.3;
    myXDs[4]=5;    myYDs[4]=0.41256;
    myXDs[5]=6;    myYDs[5]=0.44514;     
    myXDs[6]=7;    myYDs[6]=0.47304;
    myXDs[7]=8;    myYDs[7]=1;     
    //******** End of Sample Data Creation *******

    Curve crv(myXDs,myYDs);

    dXatY50 = xaty50(crv);  // Demonstration of xatY50
    printf("X at the average of min & max of Y(%s) = %g\n",strYName,dXatY50);
}