How to skip a data set in the legend of a plot?

I have 6 data sets in a plot for which I only want to show 3 in my legend, because the other 3 are just fits. If anybody can show me how to skip data sets in the legend I'd appreciate it!

This is my code (I will also attach it):

clear; clc; clf; close all;

x1 = [0.015 0.020 0.050 0.100 0.200 0.300 0.400 0.500];

y1 = [5.518E-11 7.215E-11 1.832E-10 3.824E-10 7.328E-10 1.127E-09 1.472E-09 1.831E-09];

y1_fit = [5.4986E-11 7.3391E-11 1.8408E-10 3.6907E-10 7.3998E-10 1.1116E-09 1.4836E-09 1.8560E-09];

x2 = [0.015 0.020 0.050 0.100 0.200 0.300 0.400 0.500];

y2 = [4.881E-11 7.215E-11 1.505E-10 2.299E-10 2.885E-10 5.622E-10 3.367E-10 5.284E-10];

y2_fit = [5.935E-11 7.128E-11 1.277E-10 1.986E-10 3.087E-10 3.997E-10 4.800E-10 5.533E-10];

x3 = [0.015 0.020 0.100 0.200 0.300];

y3 = [1.6010E-11 2.7611E-11 1.2114E-10 2.1066E-10 3.6957E-10];

y3_fit = [1.7010E-11 2.2611E-11 1.1114E-10 2.2066E-10 3.2957E-10];

loglog(x1, y1, 'bo', x1, y1_fit, 'b-')

hold on

loglog(x2, y2, 'ro', x2, y2_fit, 'r--')

loglog(x3, y3, 'go', x3, y3_fit, 'g--')

grid on

hold off

legend('data 1', 'skip this', 'data2', 'skip this','data 2', 'skip this')

Answer 1

[VBBV]

clear; clc; clf; close all;
x1 =  [0.015	0.020	0.050	0.100	0.200	0.300	0.400	0.500];    
y1 =  [5.518E-11	7.215E-11	1.832E-10	3.824E-10	7.328E-10	1.127E-09	1.472E-09	1.831E-09];
y1_fit = [5.4986E-11	7.3391E-11	1.8408E-10	3.6907E-10	7.3998E-10	1.1116E-09	1.4836E-09	1.8560E-09];
    
x2 =  [0.015	0.020	0.050	0.100	0.200	0.300	0.400	0.500];    
y2 = [4.881E-11	7.215E-11	1.505E-10	2.299E-10	2.885E-10	5.622E-10	3.367E-10	5.284E-10];
y2_fit = [5.935E-11	7.128E-11	1.277E-10	1.986E-10	3.087E-10	3.997E-10	4.800E-10	5.533E-10];
x3 = [0.015	0.020	0.100	0.200	0.300];
y3 = [1.6010E-11	2.7611E-11	1.2114E-10	2.1066E-10	3.6957E-10];
y3_fit = [1.7010E-11	2.2611E-11	1.1114E-10	2.2066E-10	3.2957E-10];
loglog(x1, y1, 'bo', x1, y1_fit, 'b-')
hold on
loglog(x2, y2, 'ro', x2, y2_fit, 'r--')
loglog(x3, y3, 'go', x3, y3_fit, 'g--')
grid on
hold off
legend('data 1', '', 'data2', '','data 3', '') %  put it empty 

[Alfredo Scigliani]

Thanks for the tip, but for some reason my legend still shows the marker of the data set I want to skip with the name in blank.

[VBBV]

clear; clc; clf; close all;
x1 =  [0.015	0.020	0.050	0.100	0.200	0.300	0.400	0.500];    
y1 =  [5.518E-11	7.215E-11	1.832E-10	3.824E-10	7.328E-10	1.127E-09	1.472E-09	1.831E-09];
y1_fit = [5.4986E-11	7.3391E-11	1.8408E-10	3.6907E-10	7.3998E-10	1.1116E-09	1.4836E-09	1.8560E-09];
    
x2 =  [0.015	0.020	0.050	0.100	0.200	0.300	0.400	0.500];    
y2 = [4.881E-11	7.215E-11	1.505E-10	2.299E-10	2.885E-10	5.622E-10	3.367E-10	5.284E-10];
y2_fit = [5.935E-11	7.128E-11	1.277E-10	1.986E-10	3.087E-10	3.997E-10	4.800E-10	5.533E-10];
x3 = [0.015	0.020	0.100	0.200	0.300];
y3 = [1.6010E-11	2.7611E-11	1.2114E-10	2.1066E-10	3.6957E-10];
y3_fit = [1.7010E-11	2.2611E-11	1.1114E-10	2.2066E-10	3.2957E-10];
figure(1)
h1 = loglog(x1, y1, 'bo');
hold on
h2 = loglog(x2, y2, 'ro') ;
h3 = loglog(x3, y3, 'go');
loglog(x1, y1_fit, 'b-',x2, y2_fit, 'r--',x3, y3_fit, 'g--') 
legend([h1 h2 h3],{'data 1', 'data 2', 'data 3'}) %  try using function handles 

[VBBV]

try using function handles , for data with markers having 'o'

[Alfredo Scigliani]

Yes! Thank you so much!!