# Accessing Older Versions of Analysis Tools

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===Linear Regression=== | ===Linear Regression=== | ||

- | The Linear Fit tool has been replaced with the [http://www.originlab.com/www/helponline/Origin/en/ | + | The Linear Fit tool has been replaced with the [http://www.originlab.com/www/helponline/Origin/en/Category/Linear_Regression.html Linear Regression tool] and the [http://wiki.originlab.com/~originla/wiki2/index.php?title=X-Function:FitLR fitlr] X-Function. |

To run the old tool, use : | To run the old tool, use : |

## Revision as of 05:08, 19 November 2012

## Contents |

## Summary

All analysis tools from previous versions have been replaced with new tools in Origin 8 and later versions. The new tools support Themes and scripting and are based on X-Functions.

To get help with any of the new X-Functions, use :

X-FunctionName -h; help X-FunctionName;

For example,

```
nlfit -h;
help nlfit;
```

Users may still want to access the tools from the older versions for some particular reason. The following sections outline how to launch the old version tools in version 8 or later versions.

### Linear Regression

The Linear Fit tool has been replaced with the Linear Regression tool and the fitlr X-Function.

To run the old tool, use :

dialog.start(otools,lr);

### Polynomial Regression

The Polynomial Fit tool has been replaced with the Polynomial Regression tool and the fitpoly X-Function.

To run the old tool, use :

dialog.start(otools,pr);

### Sigmoidal Regression

The Sigmoidal Fit tool has been replaced with the Nonlinear Curve Fitter and the nlfit X-Function.

To run the old tool, use :

dialog.start(otools,sr);

### Baseline

The Baseline tool has been replaced with the Peak Analyzer dialog and the pa X-Function.

To run the old tool, use :

dialog.start(otools,baseline);

### Pick Peaks

The Pick Peaks tool has been replaced with the Peak Analyzer dialog and the pa X-Function.

To run the old tool, use :

dialog.start(otools,pickpeak);

### Smoothing

The Smooth tool has been replaced with the Smooth dialog and the smooth X-Function.

To run the old tool, use :

dialog.start(otools,smooth);

### NLSF

The NLSF tool has been replaced with the Nonlinear Curve Fitter and the nlfit X-Function.

To run the old tool, use :

nlsf.control();