Remove line between first and last point on plot

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manateejoe
manateejoe 2015-7-14
回答： manateejoe 2015-7-14
I am plotting data from a text file, however, the plot automatically connects the first and last points. How do I get rid of this line?
data = load('data.txt');
time = data(:,1);
avg = data(:,2);
plot(time, avg)

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manateejoe
manateejoe 2015-7-14
I was able to figure it out: I had to sort my data:
[time, dum] = sort(time);
avg = avg(dum);

更多回答（1 个）

Honglei Chen
Honglei Chen 2015-7-14
Are you sure your last point and first point are not the same? If they are, simply do
plot(time(1:end-1),avg(1:end-1))
  2 个评论
manateejoe
manateejoe 2015-7-14
No, they are different: first point: 371.447, last point: 380.805. With this method, I still get the line in between
Star Strider
Star Strider 2015-7-14
See if:
time = [data(:,1); NaN];
avg = [data(:,2); NaN];
improves the plot.
If your data.txt file is not too large, attach it (use the ‘paperclip’ icon). Without it, it is only a guess as to what the best solution is.

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