How to enter 2 columns from an array into 1 input?

2012 11 5
2 个回答
1 次查看（30 天）

0 个投票

Loaded in a set of data containing 3 columns of info.
column 1 is H (height) and 2 and 3 are measurements (say of R) where the x values are col 2 and y values are col 3.
i need to plot a graph where h is the horiz axis and R on the vertical axis.
how would i go about making essentially the x and y 1 axis so h can be the other?

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回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2012-11-5
编辑：Azzi Abdelmalek 2012-11-5

0 个投票

[ax,h1,h2]=plotyy(h,x,h,y)

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Tyler
Tyler 2012-11-5
i dont completely understand where the 'g' and 'r' are coming from.
Azzi Abdelmalek
Azzi Abdelmalek 2012-11-5
编辑：Azzi Abdelmalek 2012-11-5
they are just color red and green, if you want
plotyy(h,x,h,y)
help plotyy
Tyler
Tyler 2012-11-5
编辑：Tyler 2012-11-5
ok that worked perfectly. Im doing multiple plots, how would i denote them as say figure 1, fig 2, fig3 ,etc.
when i do them all (the multiple plotyy's) i get a figure 1 and that is it.
edit: if i can i want them to show up at the same time and not interfere iwht each other.
Azzi Abdelmalek
Azzi Abdelmalek 2012-11-5
do you mean
plotyy(h,x,h,y);
figure
plotyy(h,x1,h,y1)
figure
plotyy(h,x2,h,y2)

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Walter Roberson
Walter Roberson 2012-11-6

0 个投票

I wonder if you want
plot(sqrt(x.^2 + y.^2), h);

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Image Analyst
Image Analyst 2012-11-6
But he wanted h on the horizontal axis and R on the vertical. I guess R = sqrt(x.^2 + y.^2). So wouldn't it be plot(h, sqrt(x.^2 + y.^2))?
Walter Roberson
Walter Roberson 2012-11-6
Right. I was reading off from the last line of the Question which implicitly used the other order.

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Tyler
Tyler
2012-11-5

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