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Physicall
Germany
4 Posts |
 Posted - 11/02/2014 : 8:28:22 PM
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Origin Ver. and Service Release : OriginPro 9.1
Operating System: Win 7 Professional 64-Bit
Hello Guys!
Its been several hours now and I still dont get it.
I want to fit linear. I have several points with error bars just as usual.
My Idea is to have straight line which goes from the bottom of a error bar to the top of a different one.
Just like in the Picture (Red line. I draw that line by myself without fitting it).
Can anybody please help me? Im going Crazy! |
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Kathy_Wang
China
159 Posts |
Posted - 11/03/2014 : 02:39:59 AM
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You could define 2 data points (x1, y1-yerr2) and (x2, y2 + yerr2) and plot these 2 data points as a line plot.
Kathy
Originlab |
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Physicall
Germany
4 Posts |
Posted - 11/03/2014 : 05:13:31 AM
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Thanks for your answer.
But how do I exactly define two data points and plot these as a line plot?
Could you please give me a short instruction? Actually i would find out that by myself but i am running out of time. I need this for my homework. |
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Physicall
Germany
4 Posts |
Posted - 11/03/2014 : 05:21:10 AM
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For Example
Lets say i have one Workbook with one sheet and 3 Columns like:
A(x) B(Y) C(yEr+-)
5,6 28,4 5,32917
5,8 46,2 6,79706
6 104 10,19804
6,2 179,6 13,40149
6,4 235 15,32971
6,6 280,4 16,74515
After plotting these as a line+ symbol graph , how do i define two data points and plot these as a line plot?
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Kathy_Wang
China
159 Posts |
Posted - 11/03/2014 : 05:21:32 AM
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Suppose you have the first data point (4, 4) with Y error 0.5, and the end data point (10, 10) with Y error 0.6, then you could create a new worksheet and define two rows like:
4 3.5
10 10.6
in which 3.5 = 4 - 0.5 and 10.6 = 10 + 0.6
Then use these XY points to create a line plot, or add the line plot into the error bar plot with Plot Setup or Layer Contents dialog.
Kathy
Originlab |
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Kathy_Wang
China
159 Posts |
Posted - 11/03/2014 : 05:25:42 AM
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quote:
Originally posted by Physicall
For Example
Lets say i have one Workbook with one sheet and 3 Columns like:
A(x) B(Y) C(yEr+-)
5,6 28,4 5,32917
5,8 46,2 6,79706
6 104 10,19804
6,2 179,6 13,40149
6,4 235 15,32971
6,6 280,4 16,74515
After plotting these as a line+ symbol graph , how do i define two data points and plot these as a line plot?
With your data, you need to determine which two data points to be connected, suppose it is the first and last, then those two data points should be:
5,6 28,4 - 5,32917
6,6 280,4 + 16,74515
Kathy
Originlab |
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Physicall
Germany
4 Posts |
Posted - 11/03/2014 : 05:38:13 AM
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Thanks a lot Kathy !
I get it now :)
You made my day.
Now I can contuine my work. |
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Topic |
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Fit a straight line between error bars