| T O P I C R E V I E W |
| Devin93 |
Posted - 03/14/2014 : 10:49:35 AM
Hello. I try to create this function that is circle f =a*x^2+b*y^2-1; where a=b=1 but I get empty graph. What do I do wrong?
Please look at my picture
https://www.dropbox.com/s/8j0mtr5dnu0y87l/Screenshot%20%287%29.png
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| 3 L A T E S T R E P L I E S (Newest First) |
| Devin93 |
Posted - 03/15/2014 : 05:00:19 AM
I nothing understand as even if I do a copy of built-in circle function without any changes I see white background again.
https://www.dropbox.com/s/ocxjbimjvry323o/Screenshot%20%289%29.png |
| Devin93 |
Posted - 03/14/2014 : 12:14:37 PM
Thanks for your answer.
"Running Man" tells me "f = -- (Undefined variable: A)"
Settings from "Simmulate" also seems correct. Please, take a look at a new link https://www.dropbox.com/s/puj4adl66ty0b0t/Screenshot%20%288%29.png
I got acquinted with Origin only today. Unfortunately, I couldn't find the button "Rescale"
EDIT1
Even f =a*(x-2)^2+b*(y-3)^2-1; dosen't appear as well with X,Y(axes) from 0 to 10 |
| snowli |
Posted - 03/14/2014 : 11:37:51 AM
From the picture, everything seems correct. Are you trying to plot a graph with the function? What is your x and y axis range? Does it cover -1 to 1 since otherwise the cuve can't be seen. You can click Rescale to Show All button to see after that if curve will show.
You can click the Simulate button in the Fitting Function Organizer and set the X, Y range, etc. and check if a function plot will be created. Make sure the x, y axis range is correct.
To check if the function you defined is correct, you can choose Tools: Fitting Function Builder and choose Edit a User-defined Function and select the function you have defined.
3. Then go to the page with Function Body defined.
Enter some x, y value and click the "running man" button to evaluate if the function you defined is correct or not.
Thanks, Snow Li
OriginLab Corp. |
