Displaying 4 results from an estimated 4 matches similar to: "sparse.model.matrix Generates Non-Existent Factor Levels if Ord.factor Columns Present"
2018 Feb 08
0
sparse.model.matrix Generates Non-Existent Factor Levels if Ord.factor Columns Present
color and clarity are ordered factors, so sparse.model.matrix is
generating orthogonal-polynomial contrasts (see ?contr.poly). This is
by design ... what are you trying to do? Are you interested in fac2sparse?
On 18-02-07 11:00 PM, Dario Strbenac wrote:
> Good day,
>
> Sometimes, sparse.model.matrix outputs a dgCMatrix which has column names consisting of factor levels that were not
2004 Jul 14
0
Ord-Getis O statistics
Hi list,
I am wondering if anybody knows if the Ord-Getis O statistics of
local spatial autocorrelation in the presence of the global spatial
association is implemented in any of the R packages - and of
course in which package ;-)). I am not interested in Getis-Ord G
statistics, for now.
Thank you in advance,
Monica
Monica Palaseanu-Lovejoy
University of Manchester
School of Geography
2000 Jun 29
2
Local Moran's I / Getis and Ord and Rousseauw Cluster Algorithms
Sorry for the repetition, unless I've got bad deja vu this questions been
asked before but I couldn't turn up an answer on CRAN. Is there already
any code in existence for local dependence measures such as Moran's I or
Getis and Ord G?
Also, S-Plus has a number of interstingly named Cluster Algorithms based on
some previous stand-alone fortran algorithms (agnes, daisy etc.) which
2006 May 23
2
transpose dataset to PC-ORD?
Hello:
I need to take a species-sample matrix and transpose it to the format
used by PC-ORD for analysis. Unfortunately, the number of species is
very large (>5000), and so this operation cannot be performed simply
in an application like Excel, which has a 255 column limit. So, I
wrote relatively simple code in R that I hoped would do this
(appended below). But there are glitches.
The