How to add legend to the Figure?

246 views (last 30 days)
I have a plot for which I am trying add legends. I am trying to add the shaded rectangles as well in legend. Please note that the rectangles are object. But they are not appearing in the legend.
I have also added the part of my code for reference. How can I add legend for the rectangle with a small same color rectagle as symbol?
% plot data
h = figure;
plot(xWithTone,yWithTone,'Color',[0.9 0.7 0.1],'LineWidth',1);
hold on;
plot(xNormalized,yNormalized,'b','LineWidth',1);
plot(xNormalized(1),yNormalized(1),'go','MarkerSize',10,'LineWidth',2);
plot(xNormalized(end),yNormalized(end),'ro','MarkerSize',10,'LineWidth',2);
% set figure limit
maze = {'maze2','maze1','maze3','maze4'};
figureLimit = {{[-0.2 1.2],[-0.2 1.2]},{[-1.2 0.2],[-0.2 1.2]}, ...
{[-1.2 0.2],[-1.2 0.2]},{[-0.2 1.2],[-1.2 0.2]}};
% get the index in maze array
mazeIndex = find(ismember(maze,subject_data.mazenumber));
xlim(figureLimit{mazeIndex}{1}); ylim(figureLimit{mazeIndex}{2});
% create rectangles
switch mazeIndex
case 1
% Maze2 a.k.a 1st quadrant
% rectangles are denoted according to feeder numbers in this maze
r1 = rectangle('Position',[0.8 0 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r2 = rectangle('Position',[0 0 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r3 = rectangle('Position',[0 0.8 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r4 = rectangle('Position',[0.8 0.8 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r = [r1,r2,r3,r4];
set(r(subject_data.feeder),'FaceColor', [1 1 0 0.3]);
rectangle('Position',[0.25 0.25 0.5 0.5],'EdgeColor','none', ...
'FaceColor',[1 0 0 0.2]);
case 2
% Maze1 a.k.a 2nd quadrant
% rectangles are denoted according to feeder numbers in this maze
r1 = rectangle('Position',[-1 0.8 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r2 = rectangle('Position',[-1 0 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r3 = rectangle('Position',[-0.2 0 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r4 = rectangle('Position',[-0.2 0.8 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r = [r1,r2,r3,r4];
set(r(subject_data.feeder),'FaceColor', [1 1 0 0.3]);
rectangle('Position',[-0.75 0.25 0.5 0.5],'EdgeColor','none', ...
'FaceColor',[1 0 0 0.2]);
case 3
% Maze3 a.k.a 3rd quadrant
% rectangles are denoted according to feeder numbers in this maze
r1 = rectangle('Position',[-0.2 -1 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r2 = rectangle('Position',[-0.2 -0.2 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r3 = rectangle('Position',[-1 -0.2 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r4 = rectangle('Position',[-1 -1 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r = [r1,r2,r3,r4];
set(r(subject_data.feeder),'FaceColor', [1 1 0 0.3]);
rectangle('Position',[-0.75 -0.75 0.5 0.5],'EdgeColor','none', ...
'FaceColor',[1 0 0 0.2]);
legend({'feeders','offer','central zone'},'Location','northeastoutside');
case 4
% Maze4 a.k.a 4th quadrant
% rectangles are denoted according to feeder numbers in this maze
r1 = rectangle('Position',[0 -0.2 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r2 = rectangle('Position',[0.8 -0.2 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r3 = rectangle('Position',[0.8 -1 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r4 = rectangle('Position',[0 -1 0.2 0.2],'EdgeColor','none', ...
'FaceColor',[0.3 0.3 0.3 0.3]);
r = [r1,r2,r3,r4];
set(r(subject_data.feeder),'FaceColor', [1 1 0 0.3]);
rectangle('Position',[0.25 -0.75 0.5 0.5],'EdgeColor','none', ...
'FaceColor',[1 0 0 0.2]);
otherwise
warning('Unexpected maze number.')
end
% add legend
legend({'before trial tone','after trial tone','location at tone', ...
'final location','feeders','offer','central zone'}, ...
'Location','northeastoutside');
  3 Comments
Struggling in MATLAB
Struggling in MATLAB on 2 Dec 2022
Thank you! Let me check it out.
Struggling in MATLAB
Struggling in MATLAB on 3 Dec 2022
Done, thank you for your help!

Sign in to comment.

Accepted Answer

Struggling in MATLAB
Struggling in MATLAB on 3 Dec 2022
Edited: Struggling in MATLAB on 3 Dec 2022
I made patches of same color as rectangle to add legends for them. Also added handle to plot functions to make it uniform with patch objects while adding legends.
% plot normalized data
h = figure;
p1 = plot(xWithTone,yWithTone,'Color',[0.9 0.7 0.1],'LineWidth',1);
hold on;
p2 = plot(xNormalized,yNormalized,'b','LineWidth',1);
mrkr1 = plot(xNormalized(1),yNormalized(1),'go','MarkerSize',10,'LineWidth',2);
mrkr1 = plot(xNormalized(end),yNormalized(end),'ro','MarkerSize',10,'LineWidth',2);
%
% some more code
%
% gray patch
grayPatch = patch(nan,nan,'k');grayPatch.FaceColor = [0.3 0.3 0.3];
grayPatch.FaceAlpha = 0.3;grayPatch.EdgeColor = "none";
% yellow patch
yellowPatch = patch(nan,nan,'k');yellowPatch.FaceColor = [1 1 0];
yellowPatch.FaceAlpha = 0.3;yellowPatch.EdgeColor = "none";
% red patch
redPatch = patch(nan,nan,'k');redPatch.FaceColor = [1 0 0];
redPatch.FaceAlpha = 0.2;redPatch.EdgeColor = "none";
% add legend
legend([p1,p2,mrkr1,mrkr2,grayPatch,yellowPatch,redPatch], ...
{'before trial tone','after trial tone','location at tone','final location', ...
'feeders','offer','central zone'},'Location','northeastoutside');

More Answers (0)

Categories

Find more on Line Plots in Help Center and File Exchange

Products


Release

R2022b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!