How to reflect a graph

 I am trying to reflect the graph closest to the origin. The reflection should start where the graph ends. I have not achieved this. Please see figure1. Any ideas? much appreciated

for n = 1:5;

    v = v(n);
    i;  
    d=z1/cosd(i);                   %calculate diagonal distance
    h(n)=z1*sind(i);                 %calculate horizontal distance
    t(n) = d/v;
    v = [3:7];
    depth(n)=z1
    sini = ((sind(i)*(v+1))/v);
    i= asind(sini)
    z1=z1+2;

end 

N=cumsum(h); 
plot(h,depth)

hold on
grid on
B=cumsum(h)+N(:,end)
C=flip(depth)
plot(B,C)
axis ij

[Image Analyst]

I don't know what reflect means to you. Like a mirror image about some line? If so, which line, or axis? Please attach a picture of what you'd like to get out.

[JDilla]

Sort of like that. Although they should be touching. I just did that on paint

[JDilla]

Does that help show what I mean?

Answer 1

[Michael Haderlein]

I guess you want something like this:

 >> x=1:10;y=x.^2.*rand(size(x));
 >> figure, plot(x,y), hold all
 >> reflectionx=8;
 >> plot(2*reflectionx-x,y)

[JDilla]

Sort of? I need it to be the same colour, and how would I implement that technique into my own code? I need the reflection to occur at the end of where the first graph ends, it seems you have got it to reflect at x=8? I have tried using (:,end) but I'm not sure

[Michael Haderlein]

same color -> use "hold on" instead of "hold all" or set the color explicitly (see the plot documentation)

reflection point -> "reflectionx=x(end);" in case that x is monotonically increasing or "reflectionx=max(x);" in case that the order of x is arbitrary.

implement into your own code -> I don't fully understand your code but I see you have two plots. Also I don't know which of them you want to reflect, but in both cases you have x-values and y-values ((h,depth) resp. (B,C)). In case you want to reflect the first one, use my code and replace x with h and y with depth. Same procedure with the second plot, respectively.

[JDilla]

Finally got it, thank you very much for your help!

Answer 2

[Deeptanu Datta]

How to take mirror image of a plot about the straight line y=-x ?