Labeling multiple line plots

Hello,

How can I label multiple line plots?

For example, I have this code that generates 20 line plots. What I want is to label each line based on %:

Here is a small portion of sample data:

Percent 5% 10% 20% 30% 40% 50% 60% 70%

Quantity Sale

800 45 90 107 109 110 111 114 116

1300 60 105 132 133 134 136 138 141

1800 35 89 133 141 142 144 145 149

2300 19 70 133 147 148 150 151 155

2900 60 105 132 133 134 136 138 141

3300 35 89 133 141 142 144 145 149

3950 45 90 107 109 110 111 114 116

4700 60 105 132 133 134 136 138 141

I'm ploting:

Plot(Sale, Quantity)

Using legend () for over 30 plot is time consuming. Any better method?

(Later I will need to plot over 80 rows & columns, a better way to identify each line would be helpful)

Thanks in advance!

[Image Analyst]

I don't see how 20 plots come out of that, much less 30. Can you attach whatever code you have so far? And tell us from that matrix, are you plotting rows or columns, and how do you get 20 or 30 instead of 8.

[Sal Ra]

That is just "a small portion of sample data"

Actual data generates 27 plots.

Answer 1

[Cris LaPierre]

I'd do something like this.

Percent = ["5%" "10%" "20%" "30%" "40%" "50%" "60%" "70%"];
Quantity = [800 1300 1800 2300 2900 3300 3950 4700]';
Sale = [45	90	107	109	110	111	114	116
    60	105	132	133	134	136	138	141
    35	89	133	141	142	144	145	149
    19	70	133	147	148	150	151	155
    60	105	132	133	134	136	138	141
    35	89	133	141	142	144	145	149
    45	90	107	109	110	111	114	116
    60	105	132	133	134	136	138	141];

plot(Quantity,Sale)
legend(Percent,'Location','EastOutside')

[Sal Ra]

Thanks.

So I guess have to use legend.

[Image Analyst]

Why do you say using legend() is time consuming? Can you use tic and toc and tell us exactly how long the legend call takes? It should be virtually instantaneous.