Finding the maximum value for one graph
20 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
In my code I have created 2 graphs, I need to find the maximum y values in both graphs and I'm unsure how to do that, at the moment my code gives the same 2 maximum y values from the second graph, rather than showing the 2 maximum values from each graph. This is the code:
clear all;
time_period = [0 181324/20000];
initial = [0, 0];
[t,y]=ode45(@myode45function, time_period, initial);
plot(t,y(:,1)),title('Graph of y against t')
xlabel('t')
ylabel('y')
ymax=max(y);
disp(ymax)
figure
plot(t,y(:,2)),title('Graph of dy/dt against t')
xlabel('t')
ylabel('dy/dt')
ymax1=max(y);
disp('The maximum value of dy/dt is: ')
disp(ymax1)
0 commentaires
Réponses (1)
James Knowles
le 15 Déc 2017
Modifié(e) : James Knowles
le 15 Déc 2017
I believe this is what you are after. The plots are irrelevant, the range of y you wish to find the maximum for just needs to be specified. For example
nx = 1:50;
ny = 1:50;
x = rand(50,50);
y = rand(50,50);
figure;
plot1 = plot(nx,x(:,1));
figure;
plot2 = plot(ny,y(:,2));
max_x = max(x(:,1));
max_y = max(y(:,2));
2 commentaires
James Knowles
le 17 Déc 2017
my apologies, nx and ny are just names of variables that I have made up.
'rand' is an inbuilt function which makes a random value between 0 and 1. In this case I have made a 50X50 matrix of these random numbers.
In your case to find the maximums of each plot; ymax = max(y(:,1)) and ymax1 = max(y(:,2)) will find the maximum values for each plot.
Voir également
Catégories
En savoir plus sur Specifying Target for Graphics Output 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!