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

Question

AT_HYZ 2024-3-15

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2094681-connecting-each-data-points-in-a-bar-graph-with-an-error-bar

回答： Star Strider 2024-3-15

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

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Answer 1

Star Strider 2024-3-15

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2094681-connecting-each-data-points-in-a-bar-graph-with-an-error-bar#answer_1425616

在 MATLAB Online 中打开

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

.

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Answer 2

Chunru 2024-3-15

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2094681-connecting-each-data-points-in-a-bar-graph-with-an-error-bar#answer_1425611

在 MATLAB Online 中打开

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-')