Displaying 3 results from an estimated 3 matches for "maxbb".
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maxb
2011 Nov 02
1
nproc parameter in efpFunctional
Hello all,
could anyone explain the exact meaning of parameter nproc? Why different
values of nproc give so different critical values, i.e.
meanL2BB$computeCritval(0.05,nproc=3)
[1] 0.9984853
meanL2BB$computeCritval(0.05,nproc=1)
[1] 0.4594827
The strucchange-package description gives "integer specifying for which
number of processes Brownian motions should be simulated" - do I need
2011 Nov 10
1
efpFunctional construction (strucchange package)
Hello,
to understand better how efpFunctional works, I'm trying to construct my own
functionals. But concerning already existing functionals I have some
questions. With maxBB it is clear:
functional = list(comp = function(x) max(abs(x)), time = max),
with rangeBB:
functional = list(time = function(x) max(x)-min(x), comp = max),
with meanL2BB, if I understood correctly:
functional = list(comp = function(x) sum(x^2), time = mean).
How can I write a functional supLM(...
2007 Jan 10
1
map data.frame() data after having linked them to a read.shape() object
...w and "relate"
in ArcMap. I use the code shown below, though without success.
Help with this would be greatly appreciated.
Thanks!
Tord
require(maptools)
# Read shape file (one row per county)
a=read.shape("myshp.shp", dbf.data=TRUE, verbose=TRUE)
str(a)
..- attr(*, "maxbb")= num [1:4] -100 49 0 0
..- attr(*, "class")= chr "ShapeList"
$ att.data:'data.frame': 490 obs. of 60 variables:
..$ STATE_FIPS: Factor w/ 12 levels "04","06","08",..: 11 11 11 11 4 5
5 5 5 5 ...
[snip]
..$ STACOUN...