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multiple linear fits

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[quote][i]Originally posted by gorkin[/i]
[br]Origin Version (Select Help-->About Origin): 6.1
Operating System: Win XP

Hi! Im still a beginner with all this plotting and fitting and science in general. Im currently spending a lot of time analyzing some routine data and I want to speed this process up. I need some kind of function that would allow me to first of all import multiple ascii columns from a text file created by a digitizer, plot the data as scatter plot on the same x-axis (time), label the axes, somehow choose the range to which linear fit can be applied and perform a linear fit simultaneously on all the curves, extract the parameter info and list them on an excel worksheet. The problem is that the range is different every time and so I was thinking that if it would somehow be possible to have multiple range selection markers that are already placed on the curves that exceed a certain gradient and then one should need to be able to choose which ones to delete and which markers to move and then fit and get the results. Any help would be greatly appreciated.

Thanks.

[/quote]

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T O P I C R E V I E W
gorkin	Posted - 11/19/2006 : 3:17:49 PM Origin Version (Select Help-->About Origin): 6.1 Operating System: Win XP Hi! Im still a beginner with all this plotting and fitting and science in general. Im currently spending a lot of time analyzing some routine data and I want to speed this process up. I need some kind of function that would allow me to first of all import multiple ascii columns from a text file created by a digitizer, plot the data as scatter plot on the same x-axis (time), label the axes, somehow choose the range to which linear fit can be applied and perform a linear fit simultaneously on all the curves, extract the parameter info and list them on an excel worksheet. The problem is that the range is different every time and so I was thinking that if it would somehow be possible to have multiple range selection markers that are already placed on the curves that exceed a certain gradient and then one should need to be able to choose which ones to delete and which markers to move and then fit and get the results. Any help would be greatly appreciated. Thanks.
2 L A T E S T R E P L I E S (Newest First)
zachary_origin	Posted - 12/04/2006 : 12:02:41 AM I can only list some functions may be used. For your practical requirment, you need write it by yourself as we can not know what are the data structures for the files and what range should be fitted.... It is impractical and also impossible for us to write the code for every users' requirment. In fact, there are many examples in the help file for every single feature (Here are also some OriginC programming examples in our website you can referece to). So you must spend some time to be familar with the OriginC or LabTalk and then combine the single feature together to perform your own task. If you have any problem in a specific function or piece of code, you can post them here and we will try to solve it. The function may be used: OriginC: Worksheet::ImportASCII() GraphLayer::AddPlot() fitpoly() fitpoly_range() LabTalk: Ascimport stat.LR layer -i layer.plotxy() worksheet -p Zachary OriginLab Technical Services.
kornster	Posted - 12/02/2006 : 11:17:48 AM Could someone help or give directions? Im having problems with this, though I should be able to do it, just dont have enough time to learn the language.

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