How do I zoom on multiple axes at once in MATLAB 6.0 (R12)?

Solution:

This enhancement has been incorporated in MATLAB 7.5 (R2007b).

To work around this issue in previous MATLAB releases, if you are using MATLAB 7.0 (R14) or later, you can use SUBPLOT instead of PLOTYY with LINKAXES to synchronize the limits of multiple axes. An example code of this method is shown below:
ax(1) = subplot(2,2,1);
plot(rand(1,10)*10,'Parent',ax(1));
ax(2) = subplot(2,2,2);
plot(rand(1,10)*100,'Parent',ax(2));
linkaxes(ax,'x');
For more information, please see the documentation for LINKAXES by executing the following in the MATLAB Prompt:
web([docroot,'/techdoc/ref/linkaxes.html'])

If you are using a version of MATLAB prior to 7.0 (R14), you can try using the customer contributed MATLAB function "linkedzoom.m". You can download this from the MATLAB Central File Exchange at the following URL:

http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=1037&objectType=file

NOTE: This code has not been officially tested with MATLAB, and is therefore not officially supported by MathWorks, Inc.