How to plot multiple data sets on the same graph

E_total_Ps =[2146.42,2146.85, 2147.28, 2147.71,2148.14,2148.58,2149.01,2149.44,2149.87,2150.30,2150.74];

E_total_Ptx =[2145.98,  2248.57,  2351.15, 2453.74,  2556.33, 2658.91,2761.50, 2864.08, 2966.67, 3069.25,3171.84];

i=0.01:0.001:0.02;

plot(i,E_total_Ps,'b--*',i,E_total_Ptx,'r--o')

legend('Ps','Ptx')

xlabel('Sampling/Tx Power (W)')

ylabel('EC(j)')

E_total_Fs =[ 2145,     2149 ,      2153,       2157 ,      2161];

E_total_Ftx =[       2145,       4283,      6421,       8559,      10697];

i=1:1:5;

plot(i,E_total_Fs,'b--<',i,E_total_Ftx,'r-->')

legend('Fs','Ftx')

xlabel('Sampling/Tx frequency')

ylabel('EC(j)')

Answer 1

[Brendan Hamm]

Use hold on and hold off to add new data to a set of existing Axes.

plot(x1,y1)
hold on
plot(x2,y2)
hold off

Annotate:

legend(..)
xlabel(...)
ylabel(...)

[Michael Miller]

How do you fit a line to the 2 two points?

[Nick Hyde]

thank you, makes it so easy