interpln

linear interpolation

Calling Sequence

[y]=interpln(xyd,x)

Arguments

:xyd 2 row matrix (xy coordinates of points) : :x vector (abscissae) : :y vector (y-axis values) :

Description

given xyd a set of points in the xy-plane which increasing abscissae and x a set of abscissae, this function computes y the corresponding y-axis values by linear interpolation.

Examples

x=[1 10 20 30 40];
y=[1 30 -10 20 40];
`plot2d`_(x',y',[-3],"011"," ",[-10,-40,50,50]);
yi=interpln([x;y],-4:45);
`plot2d`_((-4:45)',yi',[3],"000");

See Also

• splin cubic spline interpolation
• interp cubic spline evaluation function
• smooth smoothing by spline functions