I am sorry to have to disturb users of the spdep package who have used it
to fit spatial regression models.
The package has become large and hard to maintain. Functions to create and
handle spatial neighbours, and to test for spatial autocorrelation remain
in spdep. Functions to fit spatial regression models are now in the new
package spatialreg (1.1-3 on CRAN). They are _also_ in spdep 1.1-2 now on
its way to CRAN.
If you use spdep as you have done until now, the versions of the functions
in spdep will be used if you have not installed spatialreg, and you will
see warnings that the spdep functions are deprecated. If you have
installed spatialreg, you will see warnings too, but the estimation will
be done using the spatialreg namespace internally. If you install
spatialreg, and attach spdep followed by spatialreg, you will see that the
spdep model fitting functions are masked by their equivalents in
spatialreg.
During May, I expect to make the spdep versions of the model fitting
functions defunct, gradually removing the masking problem. Most use of
spdep by packages importing its namespace or attaching it only use
functions creating and handling neighbour objects. The division of
functionalities will benefit that majority of packages, because spdep will
load faster and draw in fewer packages on which it depends. However,
improving workflows for users of those packages means that users of model
fitting functions will need to use spdep for neighbour objects and in
addition spatialreg for model estimation and evaluation.
This split was discussed on github:
https://github.com/r-spatial/spdep/issues/31
and twitter: https://twitter.com/RogerBivand/status/1105023658341351424
Please take up issues on github:
https://github.com/r-spatial/spdep/issues
https://github.com/r-spatial/spatialreg/issues
on this list or by direct email.
I hope that this reconfiguration will improve the software going forward.
Grateful for feedback,
Roger
--
Roger Bivand
Department of Economics, Norwegian School of Economics,
Helleveien 30, N-5045 Bergen, Norway.
voice: +47 55 95 93 55; e-mail: roger.biv...@nhh.no
https://orcid.org/0000-0003-2392-6140
https://scholar.google.no/citations?user=AWeghB0AAAAJ&hl=en
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