how can I plot this point on my area subplot

I am trying to plot the maximum value onto my subplot

x=linspace(0,L,1000);

V= R.*(x>0).*(x-0).^0 - (w).*(x>a).*(x-a).^1 - F1.*(x>b).*(x-b).^0 + (w).*(x>c).*(x-c).^1 + R.*(x>L).*(x-L).^0;

subplot(4,2,1);

area(x,V);

ylabel('V_y (N)');

ylim([min([1.2*min(V),0,-1.2*min(V)]),max([0,1.2*max(V),-1.2*max(V)])]);

xlim([0,1.2*L])

[Vmax i]=max(V)

xmaxV=x(i)

Answer 1

[Voss]

I don't have your data, but one way to do it is to use hold on so both the area and the point are shown simultaneously, and put a marker on your point so you can see it:

L = 100;
x = linspace(0,L,1000);
V = 2500-(x-50).^2;
area(x,V);
[Vmax i]=max(V)

Vmax = 2.5000e+03

i = 500

xmaxV=x(i)

xmaxV = 49.9499

hold on
plot(xmaxV,Vmax,'o','MarkerFaceColor','r','MarkerSize',20)

[Andrew Maxey]

so i tried that, and when i do it gives me this

Unrecognized function or variable 'xmaxV'.

Error in ME466_2_quiz2 (line 40)

plot(xmaxV,Vmax,'o','MarkerFaceColor','r','MarkerSize',20)

[Voss]

What's the output to the command line when the previous two lines run?

[Vmax i]=max(V)
xmaxV=x(i)

Is there a typo somewhere, e.g., XmaxV or xmaXv, etc.?

[Andrew Maxey]

I haven gone over it multiple times and cant find a typo, but this is the ouput it is giving me

Vmax =

1675

i =

2

xmaxV =

0.0010

[Andrew Maxey]

Your answer to my question was correct, I realized I called for the function before defining it.

[Voss]

Glad you got it to work!