| T O P I C R E V I E W |
| mohamed1986 |
Posted - 04/06/2016 : 09:36:38 AM
Origin Ver. and Service Release (Select Help-->About Origin): OriginPro 2015
Operating System:10
Dear Friends,
I want to measure the angle between the X-axis and and a circle as appears in the attached image.
Thanks in advance
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| 5 L A T E S T R E P L I E S (Newest First) |
| Hideo Fujii |
Posted - 04/06/2016 : 4:33:27 PM
Hi mohamed1986,
Sorry, but I have just noticed that there is an option setting to display/output the angle in the Tangent app.
So, you get the angle directly.
--Hideo Fujii
OriginLab
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| mohamed1986 |
Posted - 04/06/2016 : 2:07:08 PM
Thanks much for your kind help.
Now it works well
Best regards |
| Hideo Fujii |
Posted - 04/06/2016 : 2:02:44 PM
Hi mohamed1986,
Once you get the slope value, say -1.25, in the Script window, you can enter the following formula,
and press ENTER key (when default is radian, and you need in degree):180*atan(-1.25)/pi= http://www.originlab.com/doc/LabTalk/ref/Atan-func
As the principal value of arctangent is -90<y<90, and your case is negative, you need to add 180 degree.
--Hideo Fujii
OriginLab |
| mohamed1986 |
Posted - 04/06/2016 : 1:28:25 PM
Thanks much for your help.
Kindly, how can I use ATAN function to convert the tangent to angle??
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| Hideo Fujii |
Posted - 04/06/2016 : 12:01:35 PM
Hi mohamed1986,
You can use Tangent gadget (or app for Origin 2016) to get the slope at the desired position.
New App: http://www.originlab.com/fileExchange/details.aspx?fid=227
Old tool: http://www.originlab.com/fileExchange/details.aspx?fid=153
You may need to extract nearby data only lower curve before applying the tool to avoid the multivalued function.
You can convert the tangent value to the angle by ATAN function.
--Hideo Fujii
OriginLab |
