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From: Karl-Friedrich Ratzsch <mail.kfr@gmx.net>
Newsgroups: comp.graphics.apps.gnuplot
Subject: iec80000 notation (was: Re: howto remove numbers after DOT)
Date: Thu, 18 Jun 2015 20:08:33 +0200
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Am 18.06.2015 um 11:12 schrieb Syed Jahanzaib:

> One thing more please. currently i am graphing downlods for the
> user account, but issue is the divide forumila. Is there any
> mehthod in which gnuplot cna auto measure the data like if its in
> KB , it should KB, if its in MB, it should show MB, if its in GB
> it should GB or vise versa.
> 
> at a  moment I am dividing the formula like //2014/2014 to get
> data in GB, but what if data is more and I want to auto show it
> in TB by auto calulating the values? sorry for bad english.
> 

For axis labels, there is a provision for automatic ki, Mi, Ti
notation, check "help format specifiers".

Otherwise you can build your own function returning the proper prefixes:

fstring(x) = sprintf("%.f ",\
		 x<2**10 ? (ps="",x) :\
		 x<2**20 ? (ps="Ki", x/2**10) : \
		 x<2**30 ? (ps="Mi", x/2**20) :\
		           (ps="Ti", x/2**30)).ps."Byte"