Displaying 3 results from an estimated 3 matches for "apca".
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apc
2008 Mar 29
0
FinTS_0.3-1
Hi, All:
FinTS version 0.3-1 is now available on CRAN. This version
adds a function 'apca' for "Asymptotic Principal Components Analysis",
as discussed in Tsay (2005) Analysis of Financial Time Series, 2nd ed.
(Wiley, sec. 9.6), in addition to minor improvements in the partially
complete scripts for chapters 3 and 9.
Spencer Graves
__________________________________...
2010 Nov 23
1
Factor analysis and cfa with asymptotically distributed data
I have friendship data which is strong skewed. So it doesn't make sense to
use maximum likelihood methods for fa and cfa.
But I couldn't find any function for asymptotically distributed data for doing a factor analysis. Only: apca() but there is no possibility to allow for factor correlations.
The same problem is with sem() I couldn't get any solutions for my model because of the distribution.
I get the error:
In sem.default(ram = ram, S = S, N = N, param.names = pars, var.names = vars, :
Could not compute QR decom...
2010 Mar 10
2
function to create multiple matrices
Hi All,
If given a dataframe (long form) with Year, Species, and Location,
How would I write a function that would create a unique matrix of Species &
Location for each Year?
What I've tried doing is the following:
data #dataframe
dataT<-table(data$Species,data$Location,data$Year) #creates tables of
Species vs Location for each Year
But I'm encountering issues individually