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Re: Suppress eval out put in "units.m"


From: Andy Buckle
Subject: Re: Suppress eval out put in "units.m"
Date: Fri, 20 Apr 2012 21:43:51 +0100

On 20 April 2012 20:58, Mech.Mon <address@hidden> wrote:
> Hello all,
>
> I modified units.m to work on my system, now it works but the "eval ("
> statement always prints now. Any way to suppress this output? For example:
>
> 14:49:04 :35> z= units("kg/m^3", "lb/ft^3", [996.2018,997.2018,998.2018])
> y =
>
>   62.191   62.253   62.316
>
> z =
>
>   62.191   62.253   62.316
>
> 14:49:18 :36>
>
>
>
> function y = units(fromUnit, toUnit, x)
>    if 2 > nargin || 3 < nargin || !ischar(fromUnit) || !ischar(toUnit)
>        usage('units(fromUnit, toUnit [, x])')
>    endif
>    [status, rawoutput] = system(sprintf('C:\\GnuWin32\\bin\\units "%s"
> "%s"', fromUnit, toUnit), 1);
>    (0 == status) || error([rawoutput,
>        'Verify that GNU units is installed in the current path.']);
>
>    i = index(rawoutput, "*");
>    j = index(rawoutput, "\n") - 1;
>    i && (i < j) || error('parsing units output "%s"', rawoutput);
>
>    exist("x", "var") || (x = 1);
>
>    ###eval(['y=x', rawoutput(i:j), ';']);<---------Throws parse error
>    eval(['y=x', rawoutput(i:j)]);#works but displays "y = ...."
> endfunction

 eval(['y=x;', rawoutput(i:j)]);

-- 
/* andy buckle */


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