connecting each data points in a bar graph with an error bar

Hi, I would like to connect those two corresponding points from one bar graph to another (first dot to another first dot).

I have a code like this now to give a bar graph and an error and each individual data points. Could help how I can connect points? thanks.

Saline1 = [41 55];
Saline2 = [34 26];

bar(1,mean(Saline1), 0.6, 'FaceColor',[0.7 0.7 0.7])
hold on
bar(2,mean(Saline2), 0.6, 'FaceColor',[0.7 0.7 0.7])
hold on
plot(1,Saline1,'--o','MarkerSize',10,'MarkerFaceColor',...
    [0.3 0.3 0.3],'MarkerEdgeColor','none','Color',[0.3 0.3 0.3],'LineWidth',2)
hold on
plot(2,Saline2,'--o','MarkerSize',10,'MarkerFaceColor',...
    [0.3 0.3 0.3],'MarkerEdgeColor','none','Color',[0.3 0.3 0.3],'LineWidth',2)
hold on
errorbar(1,mean(Saline1),(std(Saline1)/sqrt(size(Saline1,2))),...
  'LineStyle','none','LineWidth',2,'Color',[0 0 0])
hold on
errorbar(2,mean(Saline2),(std(Saline2)/sqrt(size(Saline2,2))),...
  'LineStyle','none','LineWidth',2,'Color',[0 0 0])
hold on

Answer 1

[Star Strider]

Sure!

The easiest way is probably to return the handles of the errorbar calls to get the ‘XData’, ‘YData’, ‘’YPOsitiveDelta’, and ‘YNegativeDelta’ values, and use those to plot the lines.

Try this —

Saline1 = [41 55];
Saline2 = [34 26];

bar(1,mean(Saline1), 0.6, 'FaceColor',[0.7 0.7 0.7])
hold on
bar(2,mean(Saline2), 0.6, 'FaceColor',[0.7 0.7 0.7])
hold on
plot(1,Saline1,'--o','MarkerSize',10,'MarkerFaceColor',...
    [0.3 0.3 0.3],'MarkerEdgeColor','none','Color',[0.3 0.3 0.3],'LineWidth',2)
hold on
plot(2,Saline2,'--o','MarkerSize',10,'MarkerFaceColor',...
    [0.3 0.3 0.3],'MarkerEdgeColor','none','Color',[0.3 0.3 0.3],'LineWidth',2)
hold on
heb1 = errorbar(1,mean(Saline1),(std(Saline1)/sqrt(size(Saline1,2))),...
  'LineStyle','none','LineWidth',2,'Color',[0 0 0]);
% get(heb1)
hold on
heb2 = errorbar(2,mean(Saline2),(std(Saline2)/sqrt(size(Saline2,2))),...
  'LineStyle','none','LineWidth',2,'Color',[0 0 0]);
plot([heb1.XData heb2.XData], [heb1.YData+heb1.YPositiveDelta heb2.YData+heb2.YPositiveDelta], '-r', 'LineWidth',2)
plot([heb1.XData heb2.XData], [heb1.YData-heb1.YNegativeDelta heb2.YData-heb2.YNegativeDelta], '-g', 'LineWidth',2)
hold off

.

Answer 2

[Chunru]

Saline1 = [41 55];
Saline2 = [34 26];
bar(1,mean(Saline1), 0.6, 'FaceColor',[0.7 0.7 0.7])
hold on
bar(2,mean(Saline2), 0.6, 'FaceColor',[0.7 0.7 0.7])
hold on
plot(1,Saline1,'--o','MarkerSize',10,'MarkerFaceColor',...
    [0.3 0.3 0.3],'MarkerEdgeColor','none','Color',[0.3 0.3 0.3],'LineWidth',2)
hold on
plot(2,Saline2,'--o','MarkerSize',10,'MarkerFaceColor',...
    [0.3 0.3 0.3],'MarkerEdgeColor','none','Color',[0.3 0.3 0.3],'LineWidth',2)
hold on

e(1) = errorbar(1,mean(Saline1),(std(Saline1)/sqrt(size(Saline1,2))),...
  'LineStyle','none','LineWidth',2,'Color',[0 0 0])

e = 
  ErrorBar with properties:

             Color: [0 0 0]
         LineStyle: 'none'
         LineWidth: 2
            Marker: 'none'
             XData: 1
             YData: 48
    XNegativeDelta: [1x0 double]
    XPositiveDelta: [1x0 double]
    YNegativeDelta: 7.0000
    YPositiveDelta: 7.0000

  Use GET to show all properties

hold on
e(2) = errorbar(2,mean(Saline2),(std(Saline2)/sqrt(size(Saline2,2))),...
  'LineStyle','none','LineWidth',2,'Color',[0 0 0])

e = 
  1x2 ErrorBar array:

    ErrorBar    ErrorBar

hold on

%% link the positive delta
% Get the coordinates
x = [e.XData];
y = [e.YData] + [e.YPositiveDelta];
plot(x, y, 'b-')