2.12.1 blauto

1 Brief Information
2 Command Line Usage
3 Additional Information
4 X-Function Execution Options
5 Variables
6 Description
7 Algorithm
8 Related X-Functions

Brief Information

Create baseline anchor points using specified threshold

Command Line Usage

blauto n:=5; // create baseline with 5 anchors

Additional Information

Minimum Origin Version Required: 8.0 SR3

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
Input	iy	Input XYRange	<active>	Specify the input data for creating baseline.
Auto Threshold	thres	Input double	0.05	Specify the threshold used to determine the baseline anchor point positions.
Anchor Number	number	Input/Output int	8	Specify the number of baseline anchor points, with which you can modify the shape of the baseline.
Anchors' Coordinate	oy	Output XYRange	<new>	Specify the output range for the anchor point coordinates.

Description

By finding and subtracting the baseline, we can make the peak finding on data easier and more accurate. This function automatically creates a baseline for spetrum data.

When Origin computes the baseline, the Auto Threshold variable is used to set the threshold of curvature of the baseline. And you can use the Anchors variable to set the number of the anchor points, which can be used to adjust the shape of the baseline.

Algorithm

The X-Function scans the curve data for sections whose curvatures are less than the threshold (determined by the Auto Threshold variable). These sections are then used to compose the baseline.