Re: getopt

[Juergen Rose]

Am Samstag, den 10.10.2009, 13:50 -0400 schrieb John W. Eaton:
> On 11-Oct-2009, Juergen Rose wrote:
> 
> | thank you for the answer. I did not expect that something like getopt is
> | not yet implemented in octave. All other languages I use (C, bash, perl,
> | R) have such a possibility. For me as a octave newcomer it is not very
> | easy to do it.
> 
> Procssing getopt-style options is not a common idiom in Octave.
> 
> It's relatively inconvenient to do
> 
>   result = foo ("-x", x_var, "-y" "-z");
> 
> and if you use the command-style syntax:
> 
>   foo -x x_var -y -z
> 
> instead, you can't assign the result fo the function to a variable and
> all the arguments are passed to the function as character strings,
> which is not the usuall thing to do for a numerically-oriented
> language like Octave.
> 
> So I would ask why you want to do this.  If you tell us what you are
> trying to do, someone might be able to suggest a convenient way to do
> it.
> 
> jwe

I want to write a octave script (superimpose.m) which should superimpose
to sets of vectors, these vectors should be contained in two files. My
script starts now:

#! /usr/bin/octave -qf
arg_list = argv();
fileA = arg_list{1};
fileB = arg_list{2};
dataA=load("-ascii",fileA);
dataB=load("-ascii",fileB);

Until now I load only csv files. Now I want to extend the script that it
can't read directly PDB (Brookhaven Protein) files. I.e., I would like
to call my script

$ superimpose.m file1.csv file2.csv 

to superimpose to csv files, and

$ superimpose.m -p file1.pdb file2.pdb

to superimpose to pdb files and perhaps

$ superimpose -h to print a help message.

inside of the script I want to parse argslist or argv() with a getopt
function similar to those used in bash, perl or C.

Regards Juergen.