2012/1/2 Kyle N Winfree <kyle.winf...@gmail.com>:
> On 01/02/2012 01:36 PM, Jordi Gutiérrez Hermoso wrote:
>>
>> On 2 January 2012 11:27, Kyle N Winfree<kyle.winf...@gmail.com> wrote:
>>>
>>> The second function performs a principal component
>>> analysis akin to that provided by SPSS.
>>
>> Were you unaware of this other function when you wrote that?
>>
>> http://octave.sourceforge.net/statistics/function/princomp.html
> Maybe I misunderstood the usage of that function, but from what I
> can see, it's different.
My concern is mostly about Matlab compatibility. I was wondering if
you typed "pca" into Octave, didn't see it, and concluded that no PCA
existed in Octave at all, so then you wrote your own.
For reference, this is what Matlab has on PCA:
http://www.mathworks.com/help/toolbox/stats/princomp.html
There are a number of other functions, pcacov and pcares. I know it's
a drag, but if you're implementing PCA, it's best if you can follow
Matlab, because Octave users are going to demand Matlab compatibility.
- Jordi G. H.
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