Matlab's graphical data tip precision

The graphical data tip in Matlab allows you to visualize the values of a point in a plot.
It comes with a certain decimal precision level already set as default (4 decimal digits).
You can change the default number of decimal digits.
See at the following Webpage,

http://www.cs.washington.edu/homes/dhalperi/useful.html

(thanks to Daniel Halperin for the suggestion).

2017 update

The previous instructions are valid for Matlab R2014a and older versions.
For Matlab R2014b and newer version, follow the suggestions from the following threads:

https://stackoverflow.com/questions/25477401/matlab-permanently-set-text-update-function-for-data-cursor-in-figures/39330765#39330765

Thanks to Michael Hirsch for pointing this out.

white spaces in strings built up by concatenating several substrings

In order to produce a string that contains white spaces, concatenating several different substring, use the [...] command and not Matlab's built-in function strcat(...).
The latter discards any white space contained in any substring.

common properties for axes of different subplots/figures - linkaxes(...) Matlab built-in function

A useful bult-in function in Matlab is

linkaxes(...)

It allows to link together the axes of different subplots or even figures such that one can set the axes properties once for all the subplots/figures.

See the manpage at

http://www.mathworks.ch/help/techdoc/ref/linkaxes.html