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From: =?UTF-8?Q?J=c3=b6rg_Buchholz?= <bookwood4new@freenet.de>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: space between sign and digit
Date: Thu, 12 Jul 2018 07:36:03 +0200
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Xref: csiph.com comp.graphics.apps.gnuplot:4003

On 11.07.2018 15:16, Karl Ratzsch wrote:
> Am 11.07.2018 um 14:16 schrieb Jörg Buchholz:
>> On 11.07.2018 10:00, Karl Ratzsch wrote:
>>> plot f11(x) lt 2 lw 4 dt 4 t \
>>>   sprintf("f11(x) =%.2f·x %s %.2f",a,b11<0?"-":"+",abs(b11))
>>>
>>
>> Interesting solution. On more complex functions the code is a bit long.
> 
> You're welcome. ;-) This looks a bit nicer
> 
>   nstr(x) = sprintf("%s %.2f",x<0?"-":"+",abs(x)) # return string with a
> space between sign and number
> 
>   plot f11(x) title sprintf("f11(x) =%.2f·x %s",a,nstr(b11))
> 
> or you can even outsource the whole sprintf() call into a function
> 
>   tstr(n,a,b) = sprintf("%s = %.2f·x %s %.2f",n,a,b<0?"-":"+",abs(b))
> 
>   plot f11(x) title tstr("f11(x)",a,b11)
> 
> so your plot command stays readable.

It is the right direction, something like a "newcommand" in LaTex that
makes the daily work easier.

But I need the %.2f variable, cause sometimes there are numbers which
needs more or less digits after the floating point.

At the moment I keep at the long version.

Thanks for helping.

Jörg