2.1.17.2.6.2 get_interpolated_xz_yz_curves_from_3D_data
Description
Interperate 3D data and returns smoothed xz, yz curves.
Syntax
bool get_interpolated_xz_yz_curves_from_3D_data( Curve& x_curve , Curve& y_curve, const vector& x_data, const vector& y_data, const vector& z_data, int bAutoReduceSize = false)
Parameters
- x_curve
- [output] interpolated x_z_curve at the Y where y_z_curve is maximum
- y_curve
- [output] interpolated y_z_curve at the X where x_z_curve is maximum
- x_data
- [input] vector for the x of 3D data
- y_data
- [input] vector for the y of 3D data
- z_data
- [input] vector for the z of 3D data
- bAutoReduceSize
- [input] Auto reduce size for regular data set to improve speed
Return
Returns TRUE on success and FALSE on failure.
Examples
EX1
// before compiling please add OriginC\Originlab\Nag_utils.c to workspace.
#include <Nag_utils.h>
bool get_interpolated_xz_yz_curves_from_3D_data_ex1()
{
Worksheet wks = Project.ActiveLayer();
if( !wks || wks.GetNumCols() < 3 )
return error_report("Please keep worksheet acitve with at least 3 columns");
XYZRange dr;
dr.Add(wks, 0, "X");
dr.Add(wks, 1, "Y");
dr.Add(wks, 2, "Z");
vector vx, vy, vz;
if( !dr.GetData(vz, vy, vx) )
return error_report("Fail to get xyz data");
Curve xz_curve, yz_curve;
if( !get_interpolated_xz_yz_curves_from_3D_data(xz_curve , yz_curve, vx, vy, vz) )
return error_report("Error in get_interpolated_xz_yz_curves_from_3D_data");
double w1, z0, A, w2;
double xc = peak_pos(xz_curve, &w1, &z0, NULL, &A);
double yc = peak_pos(yz_curve, &w2);
printf("z0 = %g \nA = %g \nxc = %g \nw1 = %g \nyc = %g \nw2 = %g\n", z0, A, xc, w1, yc, w2);
return true;
}
Remark
This function was used to get two curves x_curve and y_curve, using NAG fitting from a group of 3D data stored in x_data, y_data, z_data.
It is mostly used in surface fitting parameters initialization. (e.g. Power2d.fdf)
See Also
peak_pos, fitpoly
Header to Include
Nag_utils.h
Reference
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