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Re: Import data from other file formats and Histogram question
From: |
Ben Pfaff |
Subject: |
Re: Import data from other file formats and Histogram question |
Date: |
Tue, 09 Mar 2010 20:53:34 -0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) |
[cleaning out my old email]
Erik Frebold <address@hidden> writes:
> 2. Re: Histogram-- I was puzzled as to why this function would
> assign only six bins to an n=1000 dataset. Upon investigation,
> looks like the number of bins is assigned by gsl, right? (which
> I assume would use something suitable like Sturges' formula,
> though I wasn't able to find the actual stretch of code) So is
> it likely just that the pspp part of the process might not be
> quite ready for primetime yet? No problem if this is the case--
> I can use matplotlib or similar for now.
I took a look at this. PSPP always uses exactly 11 bins for
every histogram! This seems less than optimal.
I pushed out a commit that uses Sturges' formula, with a minimum
of 5 buckets.
--
Ben Pfaff
http://benpfaff.org
- Re: Import data from other file formats and Histogram question,
Ben Pfaff <=