Sorting 2 Arrays for 2D Graphs

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,

Answer 1

[Star Strider]

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))

Answer 2

[Robert Dominski]

Thanks! I'll give this a shot and update with a check for ya. Thanks a bunch! Didn't even think of that.

Cheers!

[Star Strider]

As always, my pleasure!