Bug 70673

Polynomial regression will be available in 4.2
As for power function I tried in excel and gnumeric and both also couldn't handle series 2 power function.

This is an enhancement request. Severity set to enhancement. Platform set to All/All. Further details in relation to comment #1 include https://wiki.documentfoundation.org/ReleaseNotes/4.2#Chart which indicates that bug 35712 is implementing polynomial regression.

In order for this enhancement request to be confirmed, please edit the summary to be clear about the specific regression model required (preferably one per bug) and provide links in a comment indicating the model. It is not clear from the description what a "rising power function" is i.e., is a specific function indicated here, or a family of functions? Do any of the links in the right-hand sidebar of https://en.wikipedia.org/wiki/Regression_analysis list the required function / model?

Thanks.

For adding regression funcions is sufficient polynomial regression which will be available in 4.2.

But for function in attached file I'm expecting regression with power function (https://en.wikipedia.org/wiki/Power_function or https://cs.wikipedia.org/wiki/Mocninná_funkce), where exponent is -0.92 and constant is -213.1. Data in column A is time (which cannot be negative), column B is measured value (discharging capacitor current in amperes), column C is measured value converted to pA and column D is column C with opposite sign. Expected expression is -213.1 x ^ -0,92 from cx^r . Its not big problem because I can think negative constant c. But solution can be helpful.

Thanks

Thank you for reporting this enhancement request! I can confirm that this is a valid enhancement request on:
Version: 4.3.0.0.alpha0+Build ID: daa57a101a20e0b37db7090796ad002b8d192b9b
Date:   Sun Dec 15 23:07:57 2013 +0100 
Platform: Ubuntu Linux 13.10 x64
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As I've been able to confirm the enhancement request I am marking as:

New (confirmed)
Enhancement
Lowest - not going to be incredibly useful for the vast majority of our users but a valid request none the less


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