| T O P I C R E V I E W |
| clarkexxx |
Posted - 11/08/2012 : 12:55:54 PM
Origin Ver. and Service Release (Select Help-->About Origin): OriginLab OriginPro 8.6 SR3
Operating System: win 7/ 64
Hi, I would like to integrate the entire area under the curve limited by the dashed lines. The dashed lines do not represent experimental data and are not a part of the graph. The "integration" function only allows me to connect the left and right endpoint of the curve with a straight line while the "Peak analyser" allows me define a constant baseline. Any ideas? Thanks
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| 4 L A T E S T R E P L I E S (Newest First) |
| lmw |
Posted - 11/26/2012 : 10:50:57 AM
OK, I just solved the problem by just choosing once Mathematical Area and once Absolute Area and then making just simple calculation with thos two to get one or the other area :) I think it should be correct.
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| lmw |
Posted - 11/26/2012 : 06:30:44 AM
OriginPro 8.1 SR1,
win 7
Hi there,
I have a similar question - my graph crosses the x-axis few time. How could I calculate whole red area and whole blue area?
Thanks for help! |
| clarkexxx |
Posted - 11/08/2012 : 3:26:19 PM
Thanks a lot. I love Origin. |
| greg |
Posted - 11/08/2012 : 2:34:54 PM
Starting from your graph, select Gadgets : Integrate from the menu.
In the dialog that opens, click the Baseline tab and set the Mode to "Constant Y" and Constant to "Custom".
Enter the correct Y value ... a little less than 1.05 ... and click OK.
If you click anywhere within the Region of Interest (ROI - the yellow rectangle) you will get selection handles on the left and right sides which you can use to define the X limits of integration, or you can use the button at the upper right to make various other changes.
You can do the same thing in the Peak Analyzer : Integrate Peaks goal.
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