Insert lines in grouped bar plots

Dear all,

ive created some grouped bar charts in Matlab.

Here i have 3 groups of bars and i want to ad three lines which are concecting the top of the bars .

Just the green line is adjusted right, but violet and blue are adujsted to the middle of the bar set.

Any ideas for the code???

X = categorical({'1.0','2.0','4.0','5.28'});


A=   [6700 13380 20060; 2250 4480 6700; 920 1810 2700;690 1360 2030]

%bar (A,A1, 'stacked') 
a= bar (X,A)
 
       
T1 = [20060 6700 2700 2030]
T2 = [13380 4480 1810 1360]
T3 = [6700 2250 920 690 ]

plot (X,T1)
plot (X,T2)
plot (X,T3)

[Rik]

The point of categorical is that the x-values don't mean anything. You probably need to create this plot with normal x-values if you want to adjust the location of the lines.

Even with the undocumented properties below you can't plot normally (at least on R2018a).

XOffset=get(a(n),'XOffset');if isempty(XOffset),XOffset=0;end
YOffset=get(a(n),'YOffset');if isempty(YOffset),YOffset=0;end
x_current=get(a(n),'XDataCache')+XOffset;
y_current=get(a(n),'YDataCache')+YOffset;

[Matthias Stark]

Thanks for your answer,

The reason why i used categorial is that i need an even space between 2.0 and 4.0 as well as 5.28.

When i do this chart with x values, the spaces will be wrong.

Answer 1

[dpb]

Good start but mixed metaphors...plot as numeric; use the categories as labels...

ADDENDUM:

Without creating the second array T, just use the YData property...

hBar=bar(A);         % make bar plot
hold on
hL=arrayfun(@(i) plot(hBar(i).XData+hBar(i).XOffset,hBar(i).YData, ...
            'Color', hBar(i).FaceColor, ...
            'LineWidth', 2.5, ...
            'Marker','o', ...
            'MarkerFaceColor',hBar(i).FaceColor, ...
            'MarkerEdgeColor','k'), [1:numel(hBar)]);
xticklabels(X)      % use the categorical names for tick labels

[Matthias Stark]

Thanks for this answer,

But Matlab give me this output

No appropriate method, property, or field 'XEndPoint' for class 'matlab.graphics.chart.primitive.Bar'.

[dpb]

What release are you using? MATLAB finally exposed the EndPoints property beginning with R2019 I believe (I have 'b')

For earlier releases, use the "trick" Rik outlines above--

>> hBa(1).XOffset+hBa(1).XData
ans =
    0.7778    1.7778    2.7778    3.7778
>> hBa(1).XEndPoints
ans =
    0.7778    1.7778    2.7778    3.7778
>> 

you see that the EndPoints values are those from XData location plus the hidden Offset. The anonymous function then becomes

hL=arrayfun(@(i) plot(hBa(i).XData+hBa(i).XOffset,T(i,:)),[1:numel(hBa)]);

[Matthias Stark]

Iam using the R2018b, and your code is working now.

Many thanks, but theres just one problem:

Now each of the three lines are adusted to the middle bar auf each group. But i need to arrange

Plot 1 to Bar 1, Plot 2 to bar 2 and plot 3 to bar 3.

So, that every bar is conected with all bars in the same color.

Best regards.

[dpb]

UPDATE: Just realized the problem you're seeing that confuses the issue that isn't the x locaton at all is that the three T arrays are numbered in reverse order; I built the T array asT=[T1;T2;T3]; on the presumption "one" would be first...and then never paid any attention to the height of the points as being the bar heights; just presumed a result of some other comparison as can plot the end height from the other data; don't need a separate array.

So, rearranging so

T=flipud([T1;T2;T3]);

then one gets

with

hL=arrayfun(@(i) plot(hBar(i).XData+hBar(i).XOffset,T(i,:), ...
            'Color', hBar(i).FaceColor, ...
            'LineWidth', 2.5, ...
            'Marker','o', ...
            'MarkerFaceColor',hBar(i).FaceColor, ...
            'MarkerEdgeColor','k'), [1:numel(hBar)]);

[dpb]

hL=arrayfun(@(i) plot(hBar(i).XData+hBar(i).XOffset,hBar(i).YData, ...
            'Color', hBar(i).FaceColor, ...
            'LineWidth', 2.5, ...
            'Marker','o', ...
            'MarkerFaceColor',hBar(i).FaceColor, ...
            'MarkerEdgeColor','k'), [1:numel(hBar)]);

is the simpler way -- don't need array T at all...