How to combine graph and merge different array?

Hi all,

Can someone help me with this?

Let's say I have in an m-file two corresponding array of a = [2 3 5 9 10 20 27 34] & b = [0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8] and have a graph of a vs b

and in another m-file i have array of c = [67 79 80 99] & corresponding array d = [1.0 1.1 1.2 1.3] and a graph of c vs d

How to I join the graph together since i'll don't have a value for 0.9 in the x-axis? Secondly, how can I combine both both a & c vector in the same array and b & d in the same array?

Thanks a lot.

Answer 1

[Eli Duenisch]

Why do you want to combine the vectors a&a, b&d if you want to plot two graphs? If your goal is to plot two graphs into one axis, try this:

Get the data into one workspace: If both m files are scripts, just run the scripts. If one of the m-file is a function you can pass the arrays it contains to the other m-file as return values. You can also make both files functions. Or maybe use a third file for the plot code.

Plotting two graphs into one axis: Lets say all of your arrays are in the same workspace. Now you have various possibilities to plot the graph:

hold on
plot(a,b)
plot(c,d)
hold off

Or with two y axis use:

plotyy(a,b,c,d)

[Süleyman burak Dogaroglu]

thnx

[Süleyman burak Dogaroglu]

so could you help me for my code?

function [PQ CRT TSP] = yieldLocus(po, m, stage)
p = 0;
for i = 1 : stage+1
    q = sqrt((po*p-p^2));
    P(i,1) = p;
    PQ(i,1) = p;
    PQ(i,2) = q;
    CRT(i,1) = p*m;
    pf = po + p;
    qf = m * pf-50;
    TSP(i,1) = pf;
    TSP(i,2) = qf;
    p = p + po/stage; 
end
hold on
plot(PQ,CRT);
plot(TSP);
hold off
end

I want to combine 3 matrix in 1 figure (PQ,CRT and TSP). above the code PQ and CRT matrixes x value does not correct in graph. PQ creates a semi circle and the end of circle x value must be 100 but when i combine them both the circle end at 50. if yo draw the figures seperately that doesn't happen. also combined figure x values plotted like negative x values but also seperated graps does't.

[Süleyman burak Dogaroglu]

I suppose solved like;

function [PQ CRT TSP] = yieldLocus(po, m, stage)

p = 0;

dp = 0;

for i = 1 : stage+100

q = sqrt((po*p-p^2)*m^2);

P(1,i) = p;

PQ(1,i) = q;

p = p + po/stage;

end

for j = 1 : stage+100

pf = po + dp;

DP(1,j) = pf;

qf = 3 * dp;

TSP(1,j) = qf;

dp = dp + po/stage;

end

p_ = 0;

for k = 1 : stage+100

CRT(1,k) = p_*m;

p_ = p_ + po/stage;

end

hold on

plot(P,PQ,'r');

plot(P,CRT,'g');

plot(DP,TSP,'b');

hold off

end

[Walter Roberson]

When you "hold on" you freeze the xlim and ylim. So after you plot, do

xlim auto
ylim auto