gnuplot-info

[Gnuplot-info] gnuplot histograms

[kmsmith137 <kms...@gm...>]

Hi,

How can I make a histogram in gnuplot?
In more detail, I have an ascii file with one "sample" per line:
  <sample_1>
  <sample_2>
      ....
and I would like to visualize the distribution of samples by binning them
and plotting rectangles, where the x-range of each rectangle shows the range
of each bin, and the height of each rectangle shows the number of samples in
the bin.

I could write a standalone program which preprocesses my sample file, and
outputs the bin ranges and counts, but surely there is some way to do the
binning internally to gnuplot?

Thanks!

-- 
View this message in context: http://www.nabble.com/gnuplot-histograms-tp15811193p15811193.html
Sent from the Gnuplot - User mailing list archive at Nabble.com.

Re: [Gnuplot-info] gnuplot histograms

[<Tam...@Al...>]

> I could write a standalone program which preprocesses my 
> sample file, and outputs the bin ranges and counts, but 
> surely there is some way to do the binning internally to gnuplot?

I am not aware of any. After all, gnuplot is used for plotting and not
data manipulation.

Tammo 


This e-mail (including any attachments) is confidential and may be legally privileged. If you are not an intended recipient or an authorized representative of an intended recipient, you are prohibited from using, copying or distributing the information in this e-mail or its attachments. If you have received this e-mail in error, please notify the sender immediately by return e-mail and delete all copies of this message and any attachments.
Thank you.

Re: [Gnuplot-info] gnuplot histograms

[Hans-Bernhard B. <HBB...@t-...>]

kmsmith137 wrote:

> How can I make a histogram in gnuplot?

 From the point of view of the purity, you shouldn't be trying to.  The 
Unix philosophy is "one tool <-> one task".  gnuplot's task is plotting, 
not data processing.

> I could write a standalone program which preprocesses my sample file, and
> outputs the bin ranges and counts, but surely there is some way to do the
> binning internally to gnuplot?

There's one, but it's a bit quirky:

	bw = 5   # substitute what you want
	bin(x,width)=width*floor(x/width)
	plot 'data' using (bin($1,bw)):(1.0) smooth freq with boxes

See "help smooth" to understand what this does.

Re: [Gnuplot-info] gnuplot histograms

[zeinab.khorrami <zei...@gm...>]

I have plotted the histogram, Now, how can I save the data of my histogram, I
need the numbers.
(I need it to plot log(n))

Hans-Bernhard Bröker-2 wrote:
> 
> kmsmith137 wrote:
> 
>> How can I make a histogram in gnuplot?
> 
>  From the point of view of the purity, you shouldn't be trying to.  The 
> Unix philosophy is "one tool <-> one task".  gnuplot's task is plotting, 
> not data processing.
> 
>> I could write a standalone program which preprocesses my sample file, and
>> outputs the bin ranges and counts, but surely there is some way to do the
>> binning internally to gnuplot?
> 
> There's one, but it's a bit quirky:
> 
> 	bw = 5   # substitute what you want
> 	bin(x,width)=width*floor(x/width)
> 	plot 'data' using (bin($1,bw)):(1.0) smooth freq with boxes
> 
> See "help smooth" to understand what this does.
> 
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Gnuplot-info mailing list
> Gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> 
> 

-- 
View this message in context: http://old.nabble.com/gnuplot-histograms-tp15811193p28433979.html
Sent from the Gnuplot - User mailing list archive at Nabble.com.