Implicit plane curve discretization
显示 更早的评论
I want to have a matrix with 2 lines and n columns with the coordinates of points that lie on the implicit curve 
where 
is a function. I know that the matlab function fimplicit can plot the curve. So in its subroutines it grabs a set of points from\near that curve. How can I extract those points and use them for future calculations (like the perimeter of the curve)?
where is a function. I know that the matlab function fimplicit can plot the curve. So in its subroutines it grabs a set of points from\near that curve. How can I extract those points and use them for future calculations (like the perimeter of the curve)?Thanks!
采纳的回答
fp=fimplicit(@(x,y) x.^2 + 2*y.^2 - 1); %Example
Points=[fp.XData;fp.YData]
3 个评论
Maxim Bogdan
2021-4-17
Walter Roberson
2021-4-17
fp = fimplicit(@(x,y) x.^2 + 2*y.^2 - 1, 'visible', 'off'); %Example
Points = [fp.XData;fp.YData]
delete(fp)
However this creates a graphic object -- so for example if you have no existing figure then one will be created with an axes in it (that just will not have any visible content.)
Maxim Bogdan
2021-4-17
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Line Plots 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
