optimal data structure stacked bar plot

Hello. I wish to plot a bar chart, with the following constraints:

• x axis contains 6 values (strings)
• y axis records the time
• each bar shall contains in a stacked way 5 different run time, associated with the corresponding value on the x axis (i.e. the same algorithm runs 5 times for each of the values in x, timer is set through tic/toc)
• given the i-th run (which corresponds to the i-th slot on each bar), it is coloured the same across the six bars
• different runs are given different colours (i.e. five colours in total)

I am not familiar with matlab map objects nor multi dim arrays: I am having troubles displaying the stacked bars, could you please help on what would be the optimal way to represent data in this common case? Basically, if considering a matrix form to store the runs time, each bar in the plot would be one column of a 5 X 6 matrix.

Many thanks for any hint.

Answer 1

[Alan Weiss]

Sounds like you want a stacked bar graph.

You also want the x-axis to have strings. Try this:

ax = gca;
ax.XTick = 1:6;
ax.XTickLabel = {'Low','Lowish','Medium','Highish','High','Super'};

Good luck,

[VMat]

Thanks Alan.

I am not new to these information you point out, thanks again.

My question concerns rather how to best handle the data structure behind the stacked bar graph, with the constraints indicated above.

Any hint about is still very welcome, thank you.