Increasing number of points in a plot without ruining the shape
57 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Abhiraj Gupta
le 20 Août 2019
Réponse apportée : darova
le 20 Août 2019
How can I make this plot look like
this plot but instead of reducing points I want to increase data points in red plot to 20. Using linspace or interp1 is giving me a straight line. I want to conserve the shape of the plot and increase the number of points in the plot.
0 commentaires
Réponse acceptée
darova
le 20 Août 2019
Is it correct? (Not tested)
x1red = linspace(xred(1),xblue(end),20); % more points for red curve
% scaling red curve (make it as long as blue one)
Lred = xred(end) - xred(1);
Lblue= xblue(end) = xblue(1);
xred_scaled = xred(1) + (xred-xred(1))*Lblue/Lred;
y1red = interp1(x_red_scaled,yred,x1red);
plot(xblue,yblue,'b')
hold on
plot(x1red,y1red,'r')
hold off
0 commentaires
Plus de réponses (1)
Stephen23
le 20 Août 2019
Modifié(e) : Stephen23
le 20 Août 2019
Try using method spline or pchip and see if they do what you want:
interp1(...,'pchip')
1 commentaire
Stephen23
le 20 Août 2019
Writing "it's not working" tells us nothing. If you want further help then please:
- tell us if you are extrapolating the data.
- show the exact code that you are using.
- upload sample data in a .mat file.
- show or explain how the expected output is different to what you get.
Voir également
Catégories
En savoir plus sur Surface and Mesh Plots dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!