MATLAB Central Newsreader - if-statement with several commands in true case

Re: if-statement with several commands in true case

DanK — Mon, 06 Aug 2007 14:24:36 -0400

On Aug 6, 6:02 am, "Corinna Schmitt" <c...@mathworks.com> wrote:
> Hallo,
>
> I want to work with the if-case. If a variable has a
> special value than a block of commands should be done. My
> idea was:
>
> answer = input('Has your file this order? [Y/N] - ','s');
>
> if answer=='Y' (
> numberOfRowsPlusHeader = str2num(input('How many rows
> inclusiv header has your input-file? ','s'));
> numberOfRowsPlusHeader;
>
> %verify by user: name of input
> source = input('Which file should be imported? ','s');
> source;
>
> %number and names of varaiables in [] brackets
> %correponds to the header of
> %the AIDA-output file (=column names)
> %number of %s corresponds to the number of column of
> %the AIDA-output file
> [MchipsID, prim_sec, Name, Integral, Bkg, category,
> Label, Area, Integral_Bkg, Homogeneity, Saturated,
> Quality] = ...
> textread(source,'%s %s %s %s %s %s %s %s %s %s %s %
> s',numberOfRowsPlusHeader, 'delimiter', '\t');
> )
> elseif
> display('Reorder you file and start the program again!')
> end
>
> I always receive the following error message:
> ??? Error: File: aidaimportV5.m Line: 80 Column: 17
> Expression or statement is incorrect--possibly unbalanced
> (, {, or [.
>
> Can anyone help me?
>
> Corinna

Corinna, There are a couple of problems.
First, don't bother with the parenthesis around all of the commands.
MatLab keys off of the " if else end" words, not parenthesis. Second,
your follow on: You use elseif but don't have a condition. I think
you just want "else".

HTH,
Dan

Re: if-statement with several commands in true case

John D'Errico — Mon, 06 Aug 2007 12:57:58 -0400

"us " <us@neurol.unizh.ch> wrote in message
<f970r7$j83$1@fred.mathworks.com>...
> John D'Errico:
> <SNIP unrelated OP...
>
> > It might be legal syntax in some
> > other language, but Matlab is not some
> > other language...
>
> not at all, in fact, ML is a lifestyle...
>
> us

Or sometimes a religion. ;-)

John

Re: if-statement with several commands in true case

John D'Errico — Mon, 06 Aug 2007 12:57:56 -0400

Re: if-statement with several commands in true case

us — Mon, 06 Aug 2007 11:31:51 -0400

John D'Errico:
<SNIP unrelated OP...

> It might be legal syntax in some
> other language, but Matlab is not some
> other language...

not at all, in fact, ML is a lifestyle...

us

Re: if-statement with several commands in true case

John D'Errico — Mon, 06 Aug 2007 10:43:00 -0400

"Corinna Schmitt" <csc@mathworks.com> wrote in message
<f96rk7$flf$1@fred.mathworks.com>...
> Hallo,
>
> I want to work with the if-case. If a variable has a
> special value than a block of commands should be done. My
> idea was:
>
> answer = input('Has your file this order? [Y/N] - ','s');
>
> if answer=='Y' (

(snipped)

> )
> elseif
> display('Reorder you file and start the program again!')
> end
>
> I always receive the following error message:
> ??? Error: File: aidaimportV5.m Line: 80 Column: 17
> Expression or statement is incorrect--possibly unbalanced
> (, {, or [.
>
> Can anyone help me?

I don't remember anywhere in the Matlab
documentation where it says to use ( ) to
wrap an if case.

In fact, I wonder if it is even legal matlab
syntax. It might be legal syntax in some
other language, but Matlab is not some
other language.

John

if-statement with several commands in true case

Corinna Schmitt — Mon, 06 Aug 2007 10:02:47 -0400

Hallo,

I want to work with the if-case. If a variable has a
special value than a block of commands should be done. My
idea was:

answer = input('Has your file this order? [Y/N] - ','s');

if answer=='Y' (
    numberOfRowsPlusHeader = str2num(input('How many rows
              inclusiv header has your input-file? ','s'));
    numberOfRowsPlusHeader;

    %verify by user: name of input
    source = input('Which file should be imported? ','s');
    source;

    %number and names of varaiables in [] brackets
    %correponds to the header of
    %the AIDA-output file (=column names)
    %number of %s corresponds to the number of column of
    %the AIDA-output file
    [MchipsID, prim_sec, Name, Integral, Bkg, category,
    Label, Area, Integral_Bkg, Homogeneity, Saturated,
    Quality] = ...
    textread(source,'%s %s %s %s %s %s %s %s %s %s %s %
    s',numberOfRowsPlusHeader, 'delimiter', '\t');
)
elseif
    display('Reorder you file and start the program again!')
end

I always receive the following error message:
??? Error: File: aidaimportV5.m Line: 80 Column: 17
Expression or statement is incorrect--possibly unbalanced
(, {, or [.

Can anyone help me?

Corinna