Highlight y-max

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Benjamin Nienhouse
Benjamin Nienhouse 2020-11-18
评论： Benjamin Nienhouse 2020-11-20
So I'm wondering how I would highlight the y-max for my "Original Data" plot. Below is my code but I only want to highlight the y-max for the "Original data" plot.
Thanks,
Ben
h = input("Initial height (m): "); %Initial height
angle = input("Initial Angle of elavation: "); %Degrees
v = input("Initial velocity (m/s): "); %M/S
g=-9.81; %M/S^2
angles = 0:10:180;
heights = 0:10:100;
velocity = 10:10:100;
figure
[x_val,y_val] = Arc(g,h,angle,v);
plot(x_val,y_val);
hold on;
xlabel 'x (m)'
ylabel 'y (m)'
title 'Original Data'
figure
for a = angles
[x_val,y_val] = Arc(g,h,a,v);
plot(x_val,y_val);
hold on;
end
xlabel 'x (m)'
ylabel 'y (m)'
title 'Angles 0-180'
figure
for hi = heights
[x_val,y_val] = Arc(g,hi,angle,v);
plot(x_val,y_val);
hold on;
end
xlabel 'x (m)'
ylabel 'y (m)'
title 'Height'
figure
for vel = velocity
[x_val,y_val] = Arc(g,h,angle,vel);
plot(x_val,y_val);
hold on;
end
xlabel 'x (m)'
ylabel 'y (m)'
title 'Velocity'
function [x_val,y_val] = Arc(g,h,angle,v)
y = h;
t = 0;
x_val = [];
y_val = [];
while y >= 0
y=.5*g*t.^2+v*sind(angle)*t+h;
x=v*cosd(angle)*t;
t = t + 0.01;
x_val = [x_val,x];
y_val = [y_val,y];
end
end

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采纳的回答

Adam Danz
Adam Danz 2020-11-18
plot(x_val,y_val);
hold on;
[~,idx] = max(y_val);
plot(x_val(idx),y_val(idx),'r*')
text(x_val(idx),y_val(idx),'max','VerticalAlignment','Bottom','HorizontalAlignment','Left','FontSize',8)
xlabel 'x (m)'
ylabel 'y (m)'
title 'Original Data'
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Benjamin Nienhouse
Benjamin Nienhouse 2020-11-19
Hey, if you have the time, I'm wondering how I can "slow down" the "original data" graph so it plots it like a movie (you can see it plotting on the screen) instead of just instantly plotting it.

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