Re: Format "%5f" vs. "%5g"

[Ethan A M. <merritt@u.washington.edu>]

On Tuesday 29 July 2008, Theo Hopman wrote:
> Hi all. Why does `set format y "%5f"` not work like `set format y 
> "%5g"`? I'm dealing with numbers between 0 and 5, so I would expect both 
> to produce tic labels with right justified floating point numbers in a 
> field of five characters, with no trailing zeros. %5g does, but %5f 
> doesn't: it produces tic labels with six decimal places and trailing zeros.

That is the C standard.
From "man sprintf"

       f,F    The double argument is rounded and converted to decimal notation in the style
              [-]ddd.ddd,  where  the number of digits after the decimal-point character is
              equal to the precision specification.  If the precision  is  missing,  it  is
              taken  as  6; if the precision is explicitly zero, no decimal-point character
              appears.  If a decimal point appears, at least one digit appears before it.





> I've tried 4.2.3 and the latest CVS on Cygwin, and 4.3.0 (dated February 
> 2008) on Linux.
> 
> Minimal example:
> 
> reset
> plot x
> set format y "%5g"
> replot
> set format y "%5f"
> replot
> 
> According to my interpretation of the documentation, the last two plots 
> should be identical.
> 
> THeo
> 
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-- 
Ethan A Merritt
Biomolecular Structure Center
University of Washington, Seattle 98195-7742