MATLAB FINANCIAL DERIVATIVES TOOLBOX Manuel d'utilisateur télécharger pdf (Page 24)

Type also:

“

n”

to view the help results concerning the build-in elementary functions

exhibited in Table 1 (notice also that

n is a reserved word).

The problem with the

p command is that the user must be familiar with

the topic under consideration and the word following the

p command

must be exact and spelled correctly. For example, the Matlab function that

returns the inverse of a matrix is named as:

v (type “help inv” to see what

you will get). If the user types “inverse” or “inverce” instead, then Matlab

help will return that such functions cannot be found.

r Command

A more flexible command for perusing help from Matlab, is the

r. If the

user is not familiar with the exact help that is looking, it can use the

which looks for the given string in the first comment line of the help text in

all m-files located in Matlab’s toolboxes. For example, type:

“

r inverse”

and Matlab returns all m-files functions that contain in their introductory

comments the word “inverse”. Among them, the user can locate the correct

name for the inverse function (which is simply:

v) and with the

command can see in detail what this command does. Note that the

command is time consuming and sometimes takes up to some minutes to

come up with a result.

The Help Window/Browser

Online help (online here does not refer to any Internet source) can also be

obtained via the Help menu found in the Matlab’s desktop. From the

desktop window select Help>Matlab Help to get the help browser (Figure 11)

with a list of help topics. Through this screen, the user can navigate around

a variety of topics by double clicking on them (this browser displays html

help pages and can be operate like the Internet Explorer).

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MATLAB FINANCIAL DERIVATIVES TOOLBOX Manuel d'utilisateur Page 24