----- Forwarded message from carlo.mel...@unina.it -----
Date: Wed, 9 Jan 2013 04:16:49 -0500
From: carlo.mel...@unina.it
Reply-To: carlo.mel...@unina.it
Subject: Re: PLS MorphoJ TPSPLS
To: morphmet@morphometrics.org
Dear Marisol,
in tpsPLS under the section "Option" you should see if it is ticked
the voice "Standardize variables" or "Standardize Partial
Warps".....to my understanding MorphoJ does not standardize variables
while tpsPLS does this automatically.
I would like to take advantage of this email also to ask:
when doing PLS of variables vs shape, is it more correct to
standardize the variables or not to?
I find out that when doing PLS between shape and environmental
variables standardisation changes considerably the Singular Warp
loadings.
Cheers
Carlo
morphmet_modera...@morphometrics.org ha scritto:
>
> ----- Forwarded message from marisol anzelmo -----
>
> Date: Wed, 2 Jan 2013 19:44:17 -0500
> From: marisol anzelmo
> Reply-To: marisol anzelmo
> Subject: FW: PLS MorphoJ TPSPLS
> To: morphmet@morphometrics.org
>
> Hi,
>
> I collected landmarks and semilandmarks on two curves. I slide
> semilandmarks in TPSRelw. I want to do Partial Least Square between
> the two curves. I performed PLS in two softwares: MorphoJ and
> TPSPLS. I detected that the adjusted coordinates with both softwares
> make the PLS are very similar. However, the final results I get are
> completely different . In TPSPLS I have a PLS 1 with a correlation
> of 0.4 (including or not including the uniform component) while
> MorphoJ PLS 1 is close to 0.9. I wonder why I get such different
> results if coordenates adjusted on both programs are doing the
> analysis are very similar.
>
> Regards,
>
> Marisol
>
> ----- End forwarded message -----
>
>
----- End forwarded message -----
