Bar graph using hold on

Krishnapriya Suresh

2019 10 23

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15 次查看（30 天）

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I tried plotting bar graphs of cumulative rainfall for the months of june, july and august (13 weeks) of 6 consecutive years in matlab using for loop. I used hold on function to get all the plots in a single graph. But instead of getting a side-by-side bars, I got bar graphs stacked on top. Please help me create a side-by-side graph.

This is the code I used

clear all

a=[1:1:13]

list=dir('*.TXT')

for i=1:13(list)

f=list(i).name

rain_cum(i)=textread(f)*649.2/1420000

end

bar(a,cumsum(rain_cum))

xlabel=('Weeks');

ylabel=('Rainfall');

hold on

list=dir('*.TXT')

for i=14:26(list)

f=list(i).name

rain_cum(i-13)=textread(f)*649.2/1420000

end

bar(a,cumsum(rain_cum))

xlabel=('Weeks');

ylabel=('Rainfall');

hold on

list=dir('*.TXT')

for i=27:39(list)

f=list(i).name

rain_cum(i-26)=textread(f)*649.2/1420000

end

bar(a,cumsum(rain_cum))

xlabel=('Weeks');

ylabel=('Rainfall');

hold on

list=dir('*.TXT')

for i=40:52(list)

f=list(i).name

rain_cum(i-39)=textread(f)*649.2/1420000

end

bar(a,cumsum(rain_cum))

xlabel=('Weeks');

ylabel=('Rainfall');

hold on

list=dir('*.TXT')

for i=53:65(list)

f=list(i).name

rain_cum(i-52)=textread(f)*649.2/1420000

end

bar(a,cumsum(rain_cum))

xlabel=('Weeks');

ylabel=('Rainfall');

hold on

list=dir('*.TXT')

for i=66:78(list)

f=list(i).name

rain_cum(i-65)=textread(f)*649.2/1420000

end

bar(a,cumsum(rain_cum))

xlabel=('Weeks');

ylabel=('Rainfall');

legend({'y=2013','y=2014','y=2015','y=2016','y=2017','y=2018'},'location','northwest')

hold off

This is what I got

1 个评论
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Renato SL 2019-10-23

I think the documentation of bar (here) addresses your issue. Read the Display group of bars section.

Other points:

I don't think you need to declare list multiple times
I don't think you need to declare hold on multiple times (in case you must use it)
Can you combine the loops to read the data into just 1 loop? It would be nicer to see.
The xlabel & ylabel line should be xlabel('Weeks') and ylabel('Rainfall') respectively. ylabel documentation here for details.