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testetroni

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Posted - 04/13/2017 :  3:41:13 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hello, all.
I'm trying to do an easy task: plot the function f(x)=(10x^2)/(9-x^2). The problem is that origin plots the asymptotes in x=3 and x=-3. How can I exclude these especific points from being plot? Or, how can I make it don't plot this asymptote.

Hideo Fujii

USA
1582 Posts
Posted - 04/13/2017 :  5:42:37 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi testetroni,

You can assign the missing value to make the plot discontinuous by assigning the missing value (=0/0)
to the neighbor of the limit. You can utilize the conditional operator:
http://www.originlab.com/doc/LabTalk/guide/Operators#Conditional_Operator_.28.3F:.29
to construct the function. In your case, as there are two asymptotes, I used this function in a nested way.
Please see the sample below. (Probably you want to give a large number of points (in this sample 1000)
in the curve to have enough precision to present the curve well.)


Hope this helps.

--Hideo Fujii
OriginLab
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testetroni

2 Posts
Posted - 04/14/2017 :  9:43:30 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hello, my friend.
This worked! It was exactly what I was looking for. Many thanks, buddy.
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