combine bar chart with a line plot

Question

Ludovica Varriale 2023-10-20

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2036166-combine-bar-chart-with-a-line-plot

评论： Dyuman Joshi 2023-10-20

Hello everybody,

I have a problem to plot a bar chart with a line plot. Basically, it does not plot the line (although it is not necessary, I just need the marker).

Which is the problem? Here my function:

x=["24h","48h","72h"];

y= [0.59 0.78; 0.61 0.84; 0.74 0.98];

yyaxis left

bar(x,y)

ylim([0 1])

ylabel('Y_{EtOH} [g/g]');

legend 'no adapted' 'adapted';

C= orderedcolors("reef");

colororder(C(2:3,:));

hold on

yyaxis right

names={'24h';'48h','72h'};

Error using vertcat
Dimensions of arrays being concatenated are not consistent.

x=["24h","48h","72h"];

y2= [0.74 0.74; 0.44 0.57; 0.37 0.44];

plot(x,y2,'LineStyle',"none");

set(gca,'xtick',1:3,'xticklabel',names);

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Answer 1

Dyuman Joshi 2023-10-20

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https://ww2.mathworks.cn/matlabcentral/answers/2036166-combine-bar-chart-with-a-line-plot#answer_1337306

在 MATLAB Online 中打开

plot expects the inputs as numerical values.

You can plot the values directly, for which the x-values will be the corresponding indices.

y= [0.59 0.78; 0.61 0.84; 0.74 0.98];

bar(y)

ylim([0 1])

ylabel('Y_{EtOH} [g/g]');

legend 'no adapted' 'adapted';

C = orderedcolors("reef");

colororder(C(2:3,:));

%corrected v

names={'24h';'48h';'72h'};

hold on

y2= [0.74 0.74; 0.44 0.57; 0.37 0.44];

plot(y2, '*', 'HandleVisibility', 'off');

set(gca,'xtick',1:3,'xticklabel',names);

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Ludovica Varriale 2023-10-20

Dear Dyuman, this was exactly what I was searching for!!

Thank you for helping !

Dyuman Joshi 2023-10-20

You are welcome!

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Answer 2

Walter Roberson 2023-10-20

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2036166-combine-bar-chart-with-a-line-plot#answer_1337301

在 MATLAB Online 中打开

x=["24h","48h","72h"];

y= [0.59 0.78; 0.61 0.84; 0.74 0.98];

yyaxis left

bh = bar(x,y);

ylim([0 1])

ylabel('Y_{EtOH} [g/g]');

C = orderedcolors("reef");

colororder(C(2:3,:));

hold on

yyaxis right

names={'24h';'48h';'72h'};

x=["24h","48h","72h"];

Cx = categorical(x);

y2= [0.74 0.74; 0.44 0.57; 0.37 0.44];

plot(Cx, y2, '*');

set(gca,'xtick',Cx,'xticklabel',names);

legend(bh, {'no adapted' 'adapted'}, 'location', 'north');

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Ludovica Varriale 2023-10-20

thank you!

Is there a way to have the marker on the corresponding bar? they are between the bars

Walter Roberson 2023-10-20

Not when you are using categorical x for the bar() call: when you do that then plot() coordinates can only be category names without any offset.

You would need to switch to using numeric x for the bar() call, knowing that your settting xticks is going to give the appropriate label. After that it would be a matter of figuring out where the bar positions are; that could either be estimated or could be done by examining the graphics objects created by the bar() call.

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