How can I take valid data points only and plot them?

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Daniel
Daniel 2023-1-9
评论： Voss 2023-1-9
I've imported a set of data with some invalid data points which I've already seperated. I already have a logical array of the valid data points (it looks something like ' valid=[0 0 1 1 0] ' ). Now I need to recreate the graph with only the valid points. However, when I try to use the logical array as the index of the data, it gives me an error because the matrix sizes don't match.
The original graph and data (with invalid points still present):
My attempt on plotting the graph with only valid points:
I've also tried:
plot(serial_dates(Wo1),W(Wo1))
however, the same message still pops up.

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回答（1 个）

Voss
Voss 2023-1-9
Have you tried
plot(serial_dates(valid_ararat),speed_ararat(valid_ararat))
?
  3 个评论
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Voss
Voss 2023-1-9
Look into using datetime arrays, for instance:
dt_dates = datetime(serial_dates,'ConvertFrom','datenum');
plot(dt_dates(valid_ararat),speed_ararat(valid_ararat))
https://www.mathworks.com/help/matlab/ref/datetime.html

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