Search for keyword in all help entries
As an alternative to the lookfor function,
use the Function
Browser.
lookfor topic
lookfor topic -all
lookfor topic searches for
the character vector topic in the first comment
line (the H1 line) of the help text in all MATLAB® program files
found on the search path. For all files in which a match occurs, lookfor displays
the H1 line.
lookfor topic -all searches
the entire first comment block of a MATLAB program file looking
for topic.
For example:
lookfor inverse
finds at least a dozen matches, including H1 lines containing "inverse hyperbolic cosine," "two-dimensional inverse FFT," and "pseudoinverse." Contrast this with
which inverse
or
what inverse
These functions run more quickly, but probably fail to find
anything because MATLAB does not have a function inverse.
In summary, what lists
the functions in a given folder, which finds
the folder containing a given function or file, and lookfor finds
all functions in all folders that might have something to do with
a given keyword.
Even more extensive than the lookfor function
are the find features in the Current Folder browser. For example,
you can look for all occurrences of a specified word in all the MATLAB program
files in the current folder and its subfolders. For more information,
see Find Files and Folders.