Sorting 2 Arrays for 2D Graphs

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Robert Dominski
Robert Dominski 2018-2-25
评论： Star Strider 2018-2-26
Hey:
I have a program that allows input to calculate the friction forces given a mass ratio. After every iteration I have it place these values into an array to be plotted afterwards. When it plots, it draws the line according to the input in the array. I want to sort the array from lowest to highest, but unsure how to link both arrays.
For example: A = [.5, .2, .7, 1], B = [200, 300, 400, 500], plot(A,B)
This would start drawing the graph from the first point and connecting the points in the order of the array. I want to convert A and B such that:
A = [.2, .5, .7, 1], B = [300, 200, 400, 500]
How would I do this?
Cheers,

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采纳的回答

Star Strider
Star Strider 2018-2-25
Probably the easiest way is to concatenate ‘A’ and ‘B’ into one array, then use the sortrows function:
A = [.5, .2, .7, 1];
B = [200, 300, 400, 500];
ABs = sortrows([A(:) B(:)]);
plot(ABs(:,1), ABs(:,2))

更多回答（1 个）

Robert Dominski
Robert Dominski 2018-2-26
Thanks! I'll give this a shot and update with a check for ya. Thanks a bunch! Didn't even think of that.
Cheers!

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