How to plott multiple graphs with two Y-axes?

Hi,

Please suggest me how to write the code to plott multiple graphs with two Y-axes.

I have data sets like this...

             X-axis data         X1=[.....]; X2=[.....]; X3=[....];
              First Y axis data  A1=[.....]; A2=[.....]; A3=[.....]; 
              second Y axis data B1=[.....]; B2=[.....]; B3=[.....];

This data produce totally six graphs, theree with Y axis one and three with Y axis two, please check the following image.

I am also attaching the excel file, please have a look.

Thanks

Answer 1

[Sebastian Castro]

There is a "plotyy" function which lets you have two separate y-axes on the left and right sides:

http://www.mathworks.com/help/matlab/creating_plots/plotting-with-two-y-axes.html

Since you have 6 plots (3 on each axis, you should be able to concatenate them into columns. For example:

x = (1:10)';
y1 = rand(size(x));
y2 = rand(size(x));
y3 = rand(size(x));
y4 = 100*randn(size(x));
y5 = 100*randn(size(x));
y6 = 100*randn(size(x));

plotyy(x,[y1 y2 y3],x,[y4 y5 y6]);

- Sebastian

Answer 2

[R7 DR]

Hi

I tried with your suggestion, but it is shwoing the error like ''Error using horzcat Dimensions of matrices being concatenated are not consistent.''

[Sebastian Castro]

Does your data have different x-coordinates too? The commands I shared with you assume that all of them share the same x data, and therefore also have the same number of elements in the y-axis.

You could use functions like "interp1" to interpolate the data such that they all use the same x vector and can be concatenated and plotted with plotyy. Otherwise, it may be a more involved solution...

- Sebastian

[R7 DR]

Please check attached excel, so you can get an idea data.

Answer 3

[alok dhaundiyal]

plotyy(x,[y1, y2, y3],x,[y4, y5, y6]); Try this