subtract_line

1 Menu Information
2 Brief Information
3 Command Line Usage
4 Variables
5 Description
6 Examples
7 Related X-Functions

Menu Information

Subtract Straight Line

Brief Information

Subtract the active plot from a straight line formed with two points picked on the graph page

Command Line Usage

subtract_line x1:=0 y1:=0.5 x2:=200 y2:=3.5;

Variables

Display Name	Variable Name	I/O and Type	Default Value	Description
Input	iy	Input XYRange	<active>	Specifies the input data that will be subtracted.
X1	x1	Input double	0	Specifies the X value of the first point.
Y1	y1	Input double	0	Specifies the Y value of the first point.
X2	x2	Input double	<unassigned>	Specifies the X value of the second point.
Y2	y2	Input double	<unassigned>	Specifies the Y value of the second point.
Output	oy	Output XYRange	<input>	Specifies the output range for the subtracted data. See the syntax here.

Description

This X-Function can be used to subtract a straight line from a data set. The straight line is determined by two points. If you use this X-Function from the menu and a graph is active, you can click on the graph to select these two points. If you use this X-Function from script, you can specify the X and Y values of these two points.

Examples

In this example, we use the subtract_line X-Function to subtract a straight line from the data plot.

Create a new graph page by clicking the New Graph button on the Standard toolbar.
Import the file \Samples\Spectroscopy\Raman Baseline.dat into the graph.
From the Origin menu, choose Analysis: Data Manipulation: Subtract Straight Line. Double-click on the beginning of the plot and then the end of the plot.
Click the Rescale button on the Graph toolbar. We can see the graph as follows:

Related X-Functions

subtract_ref