factanal and plotting?

2 messages · Martin Kaffanke, Mark Wardle

Original

Martin Kaffanke

Thu, Mar 13, 2008 8:28 AM #

Hi there!

To make a good choice for the estimation of the number of usefull
factors.  And I'd like to plot a graph like:

http://de.wikipedia.org/wiki/Bild:Parallelanalyse.jpg

where I don't need the green line (random values).

But with

str(factanal(data, factors=10)) I cannot figure out where I can find the
values for plotting.

Can you please help me in this question?

Thanks,
Martin

Ihr Partner f?r Webdesign, Webapplikationen und Webspace.
http://www.roomandspace.com/
Martin Kaffanke +43 650 4514224
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3 days later

Mark Wardle

Mon, Mar 17, 2008 12:18 AM #

Dear Martin,

The plot you refer to is a scree plot.

One option (there are many) is to have a look at the nFactors package.
Despite its package description, it includes the function plotnScree.

You will find it helpful to search google for "scree plot R" and/or
use rseek.org as there are many possibilities.

Good luck.

Best wishes,

Mark

On 13/03/2008, Martin Kaffanke <technik at roomandspace.com> wrote:

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Dr. Mark Wardle
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