If I have an array that is size 2x60, how do I plot row 2 vs. row 1?
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Anna Blakley
on 12 Oct 2016
Answered: Image Analyst
on 12 Oct 2016
Would it be plot(data(2,:),data(1,:))?
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Star Strider
on 12 Oct 2016
Edited: Star Strider
on 12 Oct 2016
Would it be
plot(data(2,:),data(1,:))
Yes if you want row 2 as the x (independent) variable and row 1 as the y (dependent) variable. Otherwise, reverse them.
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Image Analyst
on 12 Oct 2016
No. You reversed them. For example if you say you want to plot the "signal vs. time" or "y vs. x" or "weight vs. height, the vertical/dependent variable comes first in the verbal description, but second in the call to plot(). The horizontal/independent variable comes second in the verbal description, but first in the call to plot().
So if you want to plot y vs. x, it would be plot(x, y), NOT plot(y, x).
Plotting vec1 vs. vec2 would be plot(vec2, vec1), not plot(vec1, vec2).
So in your example plotting row 2 vs. row 1 would be plot(data(1,:),data(2,:)), not plot(data(2,:),data(1,:)) as you had it. This will plot row 2 as a function of row 1, which is what you asked. Your code would plot row 1 as a function of row 2, which is the opposite of what you asked.
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