Consolidating Many Legend Entries Into One

[Camron Call]

I have a figure where I plot four sets of data each with 8 or 9 individual rows. Each data set has a color that represents it. I would like to have only 4 entries in the legend, one for each color. But currently, the legend has an entry for each row of data resulting in close to 35 entries or so which makes everything way too cluttered since they represent similar data.

Currently, I am using the figure editor to fine tune this, but I could implement a solution easily enough in script as well.

[Idin Motedayen-Aval]

Camron Call wrote:
> I have a figure where I plot four sets of data each with 8 or 9 individual rows. Each data set has a color that represents it. I would like to have only 4 entries in the legend, one for each color. But currently, the legend has an entry for each row of data resulting in close to 35 entries or so which makes everything way too cluttered since they represent similar data.
>
> Currently, I am using the figure editor to fine tune this, but I could implement a solution easily enough in script as well.

Hi Camron,
A while ago I did something like this and found some example code in the
MATLAB doc (under "Controlling Legends"). Here's my code:

%% Create dummy data
SNRs = 0:1:25;
dummy_data = [10.^(-SNRs); 5.^(-SNRs); 20.^(-SNRs)];
%% Plot theoretical curves
h_lines = semilogy(SNRs,dummy_data,':');
hold on
%% Plot simulation results
simLines = semilogy(SNRs, dummy_data,'*');

%% Add Legend
% Do MATLAB graphics magic to create concise legend
% See "Controling Legends" in MATLAB doc

% group lines together
simGrp = hggroup('DisplayName','Simulation');
theoGrp = hggroup('DisplayName','Theoretical');
set(simLines,'Parent',simGrp)
set(h_lines,'Parent',theoGrp)
set(get(get(simGrp,'Annotation'),'LegendInformation'),...
'IconDisplayStyle','on'); % Include this hggroup in the legend
set(get(get(theoGrp,'Annotation'),'LegendInformation'),...
'IconDisplayStyle','on'); % Include this hggroup in the legend
legend show

HTH,
Idin

--
Idin Motedayen-Aval
The MathWorks, Inc.
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char(filter(1,[1,-1],[105 zq])), clear zq