How do I use the values in a .txt file to create a stacked bar graph?

I've already been successful at opening the file and obtaining the values

fileID = fopen('report_data.txt','r');
patientName=fgetl(fileID);
dateOfBirth=fgetl(fileID);
notes=fgetl(fileID);
healthy_exposed = fgetl(fileID);
pus = fgetl(fileID);
necrotic = fgetl(fileID);
ulcer_stage = fgetl(fileID);
area = fgetl(fileID);
volume = fgetl(fileID);
fclose(fileID);

But I'd like to take healthy_exposed, pus, and necrotic and create a stacked bar graph.

Answer 1

[Dishant Arora]

bar( [str2num(healthy_exposed)', str2num(pus)', str2num(necrotic)'], 'stacked')

[Golnar]

It produces this error:

Error using cat
        Dimensions of matrices being concatenated are not consistent.
        Error in clinrep (line 49)
        bar(cat(1, healthy_exposed, pus, necrotic), 'stacked');

[Dishant Arora]

You must convert your data to numeric type first. fgetl returns charactor type. Use str2num to convert it to numeric type. You might be getting this error because of strings of unequal length.

[Golnar]

Hey Dishant, I did recently use str2num actually.

figure;
bar(cat(1, str2num(healthy_exposed), str2num(pus), str2num(necrotic)), 'stacked');

The result is this. It failed to produce a 'stacked' bar graph.

[Dishant Arora]

I was wrong on my part. I have made appropriate changes in the answer.