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| From: | Jiri Pachman |
| Subject: | TTS - moving curves along x-axis |
| Date: | Mon, 31 Jan 2005 09:33:03 +0100 |
| User-agent: | Opera M2/7.51 (Win32, build 3798) |
Hi Octave people,I have been wondering if someone has used octave to produce so called master curves using time temperature superposition (often used in polymer studies). From mathematical point of view it is just moving some curves to the right and some to the left on the x-axis. The curves after movement overlap (but does not necessarily have to) forming one curve – the master curve. The shifts on the x-axis (usually in log scale) are than used for further calculations. As far as I know the shifts are done in some interactive way (user using arrow keys) until it looks as a best fit. I was thinking about some least squares fit but the equation of the master curve is generally unknown.
Since someone must have already solve this I am asking before burying myself into reinvention of the wheel.
Sincerely Jiri Pachman -- *************************************************** Ing. Jiri Pachman Katedra teorie a technologie vybusnin Univerzita Pardubice Studentska 95 532 10 Pardubice tel.: +420-46-603-8018 fax.: +420-46-603-8024 *************************************************** ------------------------------------------------------------- Octave is freely available under the terms of the GNU GPL. Octave's home on the web: http://www.octave.org How to fund new projects: http://www.octave.org/funding.html Subscription information: http://www.octave.org/archive.html -------------------------------------------------------------
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