If I have an array that is size 2x60, how do I plot row 2 vs. row 1?

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Anna Blakley
Anna Blakley 2016-10-12
回答： Image Analyst 2016-10-12
Would it be plot(data(2,:),data(1,:))?

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Star Strider
Star Strider 2016-10-12
编辑：Star Strider 2016-10-12
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
Image Analyst 2016-10-12
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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