problem with plot command

my plot command is giving me a y axis with single value throughout & it makes plot look weird. axis command doesnt woek as well because it is showing only one entry from the legend in the graph. please see the screenshot attached.

P1=P(1:30,1);
P2=P(1:30,6);
P3=P(1:30,11);
xx=linspace(50,2950,30);
figure(1)
plot(xx,P1,'b-*', xx,P2,'r--',xx,P3,'g-o');
%axis([0 3000 0 3000]);
xlabel('Distance');
ylabel('Pressure');
legend('t=0','t=50','t=100');
title('leak-proof test');

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[CS Researcher]

Can you share the variable P?

Answer 1

[Amey]

I got the solution for this problem. I created variable i twice by mistake & it was ruining my output. it messed up all my loops in the program. now the problem is resolved. thanks!