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From: sfeam <sfeam@users.sourceforge.net>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: How to print floats with leading blanks instead of leading zeros using sprintf?
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Date: Mon, 28 May 2012 11:16:26 -0700
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Валерий Симонов wrote:

> Hi everyone,
> 
> I want to specify labels for the plots using sprintf.
> According to
> http://www.cplusplus.com/reference/clibrary/cstdio/sprintf/ sprintf('
> %3.0f',1) should print "001"
> sprintf(' %3.0d',1) should print "  1".
> However gnuplot outputs:
> sprintf(' %3.0f',1)  "001"
> sprintf(' %3.0d',1) "1" (without leading blanks).
> 
> Does anyone know how to fix this issue?

I cannot reproduce either of those results here.
The first one in particular makes no sense.
Could it be that you are not really using the format you show us?

 gnuplot> print sprintf("|%3.0d|",1)
 |  1|
 gnuplot>


> 
> Thanks in advance!
> 
> Regards,
> Valera