2.8.11 interp1q
Brief Information
Perform linear interpolation/extrapolation of XY data
Command Line Usage
1. interp1q ix:=Col(3) iy:=Col(2);
2. interp1q ix:=Col(3) iy:=(Col(1), Col(2)) ox:=Col(4);
X-Function Execution Options
Please refer to the page for additional option switches when accessing the x-function from script
Variables
Display
Name
|
Variable
Name
|
I/O
and
Type
|
Default
Value
|
Description
|
| X Values to Interpolate
|
ix
|
Input
vector
|
<unassigned>
|
Specifies the X values to be interpolated on.
|
| Input
|
iy
|
Input
XYRange
|
<active>
|
The input XY range data to be interpolated
|
| Result of Interpolation
|
ox
|
Output
vector
|
<new>
|
Specifies the column to save output interpolated Y values
|
Description
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.
Examples
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.
Algorithm
Detail algorithms please read the help of interp1.
Related X-Functions
interp1, interp1xy, spline, bspline
Keywords:interpolate, extrapolate
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