# Plotting Matrix points: 2

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Given a matrix:

B

ans =

30.7805 28.7527 25.7110 23.6832 19.6268 17.5949 14.5547 11.5147 8.4725 5.4313

29.7667 27.7333 24.6923 21.6549 18.6114 15.5708 12.5285 9.4806 7.4582 4.4159

B.'

ans =

30.7805 29.7667

28.7527 27.7333

25.7110 24.6923

23.6832 21.6549

19.6268 18.6114

17.5949 15.5708

14.5547 12.5285

11.5147 9.4806

8.4725 7.4582

5.4313 4.4159

I am trying to plot the data as shown in this image:

I am trying to plot the 1st column as the orange points and the 2nd column as the blue points. The time between the points form a small box. The only axes I'm interested in is the X which will be composed of the overall time of the video. I am attempting to do this in a GUIDE axes. Eventually I want the user to be able to select the points and add labels.

Any advice in accomplishing this will be greatly appreciated!

##### 0 Comments

### Accepted Answer

Paulo Silva
on 20 Jul 2011

a =[30.7805 29.7667

28.7527 27.7333

25.7110 24.6923

23.6832 21.6549

19.6268 18.6114

17.5949 15.5708

14.5547 12.5285

11.5147 9.4806

8.4725 7.4582

5.4313 4.4159]

axis([0,max(a(:))+max(a(:))/5,0,2])

hold on

plot(a(:,1),1,'pb')

plot(a(:,2),1,'pr')

h=0.02;y=1;

arrayfun(@(n)rectangle('EdgeColor','y','Position',...

[min([a(n,1) a(n,2)]),y-h,abs(a(n,1)-a(n,2)),2*h]),1:size(a,1))

%with numbers if you want them:

arrayfun(@(n)text(min([a(n,1) a(n,2)]),y+2*h,...

num2str(size(a,1)-n+1)),1:size(a,1))

##### 12 Comments

Fangjun Jiang
on 21 Jul 2011

### More Answers (2)

Fangjun Jiang
on 20 Jul 2011

B=[30.7805 28.7527 25.7110 23.6832 19.6268 17.5949 14.5547 11.5147 8.4725 5.4313

29.7667 27.7333 24.6923 21.6549 18.6114 15.5708 12.5285 9.4806 7.4582 4.4159];

h=line(B,zeros(2,10));

hold on;

plot(B(1,:),zeros(10,1),'y*');

plot(B(2,:),zeros(10,1),'bo');

set(h,'LineWidth',2,'color','red')

##### 4 Comments

Fangjun Jiang
on 20 Jul 2011

Well, you changed the size of your B from previous one (10x2 vs. 2x10).

B_Richardson
on 20 Jul 2011

##### 3 Comments

Fangjun Jiang
on 20 Jul 2011

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