[R] gstat---2 basic plot questions

ONKELINX, Thierry Thierry.ONKELINX at inbo.be
Wed Sep 9 13:40:59 CEST 2009


Dear Steve,

Here are a fex examples for empirical variograms using ggplot2

library(gstat)
library(ggplot2)
data(meuse)
coordinates(meuse) = ~x+y
vgIso <- variogram(log(zinc)~x+y, meuse)
vgIso$id <- "iso"
vgAniso <- variogram(log(zinc)~x+y, meuse, alpha=c(0,45,90,135))
vgAniso$id <- "aniso"

Empirical <- rbind(vgIso, vgAniso)
ggplot(Empirical, aes(x = dist, y = gamma, weight = np / (dist ^ 2),
colour = id, shape = factor(dir.hor))) + geom_smooth() + geom_point()
ggplot(Empirical, aes(x = dist, y = gamma, weight = np / (dist ^ 2),
colour = id)) + geom_smooth() + geom_point() + facet_wrap(~dir.hor)

newVgIso <- merge(vgIso[, -4], expand.grid(dist = vgIso$dist, dir.hor =
unique(vgAniso$dir.hor)))
Empirical2 <- rbind(newVgIso, vgAniso)
ggplot(Empirical2, aes(x = dist, y = gamma, weight = np / (dist ^ 2),
colour = id)) + geom_smooth() + geom_point() + facet_wrap(~dir.hor)

HTH,

Thierry 


------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium
tel. + 32 54/436 185
Thierry.Onkelinx at inbo.be
www.inbo.be

To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to
say what the experiment died of.
~ Sir Ronald Aylmer Fisher

The plural of anecdote is not data.
~ Roger Brinner

The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of
data.
~ John Tukey

-----Oorspronkelijk bericht-----
Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
Namens bevenro
Verzonden: dinsdag 8 september 2009 20:23
Aan: r-help at r-project.org
Onderwerp: [R] gstat---2 basic plot questions


Hi all--

I'm new to R, statistics and programming, so sorry if this is a really
basic question!

I have plotted a directional variogram, and I want to

a. overlay the omni-directional line over each directional panel

b. display the directional variograms in a single panel with a legend
that associated each line to each degree measurement.

The line I'm using is

plot(DirectionalVar,multipanel=FALSE,auto.key=TRUE)

this gives me the single panel, but I don't know how to bind the legend
to the lines (it's tricky to tell which is which) or to overlay the
omni-directional line.

Just looking to keep this as simple as I can--

Thanks!

Steve
--
View this message in context:
http://www.nabble.com/gstat---2-basic-plot-questions-tp25351553p25351553
.html
Sent from the R help mailing list archive at Nabble.com.

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Druk dit bericht a.u.b. niet onnodig af.
Please do not print this message unnecessarily.

Dit bericht en eventuele bijlagen geven enkel de visie van de schrijver weer 
en binden het INBO onder geen enkel beding, zolang dit bericht niet bevestigd is
door een geldig ondertekend document. The views expressed in  this message 
and any annex are purely those of the writer and may not be regarded as stating 
an official position of INBO, as long as the message is not confirmed by a duly 
signed document.




More information about the R-help mailing list