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Two X axis for a same Y axis

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akbar
akbar 2011-4-20
编辑： Christopher Saltonstall 2018-3-6
Hi,
I need to plot a curve and to use 2 X axis to represent this curve.
So in summary I have for exemple :
One vector y with a given length L One vector x1 with the same length L One vector x2 with the same length L
I would like to plot y as a function of x1 and to have in the same figure another axis on the top of the figure which represents the x2 values.
I really need to do it but I can't. I'm trying to do it for several days now but without any success. Anyone could help me please?
Thank you

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采纳的回答

Jarrod Rivituso
Jarrod Rivituso 2011-4-20
Have you seen this:
http://www.mathworks.com/help/releases/R2011a/techdoc/creating_plots/f1-11215.html
The trick is creating axes on top of each other, and making one transparent
  1 个评论
Christopher Saltonstall
Christopher Saltonstall 2018-3-6
编辑：Christopher Saltonstall 2018-3-6
Jerrod,
I have a follow up to akbar's question. I have one data set that I want to plot with two x-axis that are related to one another. For example, I want to plot the electrical conductivity of Silicon versus dopant concentration on the bottom x-axis and have the top x-axis be spacing between dopant atoms.
y = [1 2 3 4 5];
x1 = [1e14, 1e15, 1e16, 1e17, 1e18]; %cm^-3
x2 = (3./(4*pi*x1))^(1/3); %cm
How would I do that?

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更多回答（2 个）

Paulo Silva
Paulo Silva 2011-4-20
akbar
akbar 2011-4-21
Thank you very much! :-)

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