| T O P I C R E V I E W |
| asp |
Posted - 04/02/2010 : 4:30:46 PM
Origin Ver. 8 sr 4 Operating System: Windows 7
I have a dataset like following
x | y
0 | 1E-10
0.01 | 1E-9
0.1 | 1E-8
1 | 1E-7
10 | 1E-6
100 | 1E-5
I try to use linear fit by plotting the data in the log scale (both axes) and checking "Apparent fit". I get something like this:
I am not able to force Origin to fit through all the points.
However, when I manualy convert the dataset to Log scale and plot it - fitting works just fine.
Am I missing some options for the fitting?
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| 3 L A T E S T R E P L I E S (Newest First) |
| larry_lan |
Posted - 04/05/2010 : 10:48:46 PM
Please update to SR6.
Larry |
| asp |
Posted - 04/04/2010 : 1:18:10 PM
You are right, if I check "Same as Input Data", it works fine. Minor issue here is that when I start Linear fit Origin by default set this parameter to "Log", which is correct but fit does not work unless it switvhed to "Same ...". I see a minor problem with program logic.
By the way, when "Same as jnput data" is activated I can not get "Spun to Full Axis range", which is logic because I use the same range of data, but how I can get Linear fit work and "spun to full..." available? |
| larry_lan |
Posted - 04/02/2010 : 8:09:25 PM
Did you check the settings in "Fitted Curves Plot --> X Data Type"?
Larry |
