Caption - Legend

[Renato S. Yamane]

Hello,

Maybe this is a stupid question, but I didn't found an answer in https://octave.sourceforge.io/octave/function/legend.html

I have 2 arrays:

X_axis = 1 line x 11 columns;
Y_axis = 7 lines x 11 columns;

I generate a graph with:

figure(1);
loglog(X_axis,abs(Y_axis));
grid minor;
legend show

But the legend show me:
data1
data2
data3
data4
data5
data6
data7

How may I change the caption of each data? :-)

Many thanks,
Renato