Data Analysis with uneven data lenghts

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Matthew Gilroy
Matthew Gilroy 2020-10-27
评论： Peter Perkins 2020-11-20
Hi
I have two sets of data that are different lenghts which has caused a problem where the shorter set of data has now presumed that the rest of the data is all 0 so the graph has a sharp line that shouldn't be there. Is there a way of stopping this problem?
Data1 = csvread('Swale5km.csv')
Data1(:,1), Data1(:,2), Data1(:,3), Data1(:,4)
plot(Data1(:,1), Data1(:,2),Data1(:,3), Data1(:,4))
xlabel 'Time/Hours'
ylabel ' Concentration ug/l'
  1 个评论
Peter Perkins
Peter Perkins 2020-11-20
Data1(:,1), Data1(:,2), Data1(:,3), Data1(:,4) as written above certainly are not different lengths.
If you have x1, y1 different lengths than x2, y2, plot(x1,y1,x2,y2) will work just fine.

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dpb
dpb 2020-10-27
编辑：dpb 2020-10-27
Substitute NaN for the missing values; plot() will silently ignore it.
Since it appears there are no real zero values, you can do it trivially in this case:
Data1(Data1==0)=nan;

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