switching output based on input

2013 10 2
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更新时间：2013 10 2
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Hi, is it possible to switch the output of a function based on the input that was given to the function? im talking about switching to diffderent number and types of output?
thank you

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回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2013-10-2

0 个投票

You can use if else statement

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Dany
Dany 2013-10-2
right, but when im defining the function i have to put an output in the definition. how would i change that output during the function runing?
Azzi Abdelmalek
Azzi Abdelmalek 2013-10-2
This is not clear. Please give an example
Dany
Dany 2013-10-2
lets say i have a function called "grid" that creats a grid from a gived geometry. if the input is a geometry of a square then the output will be [Xgrid, Ygrid], parameters created with the "meshgrid" function. on the other hand if the input is a geometry of a non rectengular shape then the output will be [p, e, t], parameters created by the "initmesh" function (triangular mesh).
i hope that was a batter explenation.
Azzi Abdelmalek
Azzi Abdelmalek 2013-10-2
Look at
help varargin
help varargout
help nargout
Dany
Dany 2013-10-2
ok, thank you.
Azzi Abdelmalek
Azzi Abdelmalek 2013-10-2
Example
function varargout=ans_switch(a)
if a==1
varargout{1}=10
varargout{2}=20
else
varargout{1}=100
end
% to call this function
% If a==1
[out1,out2]=ans_switch(1)
% If a~=1
out1=ans_switch(12)

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Dany
Dany
2013-10-2

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Azzi Abdelmalek
Azzi Abdelmalek
2013-10-2

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