Contents |
Perform linear interpolation and extrapolation
1. interp1q ix:=Col(3) iy:=Col(2);
2. interp1q ix:=Col(3) iy:=(Col(1), Col(2)) ox:=Col(4);
| Display Name | Variable Name | I/O and Type | Default Value | Description |
|---|---|---|---|---|
| X Values to Interpolate | ix |
Input vector | |
Specifies the X values to be interpolated on. |
| Input | iy |
Input XYRange | |
The input XY range data to be interpolated |
| Result of Interpolation | ox |
Output vector | |
Specifies the column to save output interpolated Y values |
This function performs linear interpolation on XY range data. You should specify the X coordinates on the curve, and it will output a vector contains the interpolated Y values on these X values.
1. Import Interpolation.dat on \Samples\Mathematics folder.
2. Highlight column B and type interp1q -d on the command window to bring up the dialog.
3. On the X Value to Interpolate drop-down list, select Col(C).
4. Click OK to do interpolation on column C values.
Detail algorithms please read the help of interp1.