Forum: help

RE: soiltexture - transformation [ Reply ] By: Julien Moeys on 2012-07-13 11:48	[forum:7181]
you are welcome :o)

RE: soiltexture - transformation [ Reply ] By: Daniela S on 2012-07-12 16:28	[forum:7179]
Wow, thanks for this very fast answer und for this package - it is great and it worked. Thanks a lot

RE: soiltexture - transformation [ Reply ]
By: Julien Moeys on 2012-07-12 16:20

[forum:7131]

Hi Daniela

You just forgot 2 commas at the end of the line to separate the arguments in
TT.text.transf()

here is the correct code (works for me)
###
library( "soiltexture" )
USATex <- data.frame(
"CLAY" = c(38.77,41.85,39.35,38.95,45.58,44.76),
"SILT" = c(3.48,3.4,4.18,5.32,1.89,1.35),
"SAND" = c(57.75,54.75,56.46,55.72,52.53,53.89),
stringsAsFactors = TRUE) #

#Classify according to the USDA classification
classif <- TT.points.in.classes(
tri.data = USATex,
class.sys = "USDA.TT")

#transform silt-sand-boundary from 50 mikrom to 63
GerTex <- TT.text.transf(
tri.data = USATex, # comma
base.css.ps.lim = c(0,2,63,2000), # comma
dat.css.ps.lim = c(0,2,50,2000))
###

With bests

Julien

soiltexture - transformation [ Reply ]
By: Daniela S on 2012-07-12 15:31

[forum:7130]

Hi,
I am working on my master thesis and have to convert the results from a grain size analysis from the USDA-system to the German-system (DE.BK94.TT).
What i did:
library( "soiltexture" )
USATex <- data.frame(
"CLAY" = c(38.77,41.85,39.35,38.95,45.58,44.76),
"SILT" = c(3.48,3.4,4.18,5.32,1.89,1.35),
"SAND" = c(57.75,54.75,56.46,55.72,52.53,53.89),
stringsAsFactors = TRUE) #

#Classify according to the USDA classification
classif <- TT.points.in.classes(
tri.data = USATex,
class.sys = "USDA.TT")

#transform silt-sand-boundary from 50 mikrom to 63
GerTex <- TT.text.transf(
tri.data = USATex
base.css.ps.lim = c(0,2,63,2000)
dat.css.ps.lim = c(0,2,50,2000))

Up to the last step everything worked, but now R says:
Error: unexpected symbol in:
" tri.data = USATex[1:4,]
base.css.ps.lim"
> dat.css.ps.lim = c(0,2,50,2000))
Error: unexpected ')' in " dat.css.ps.lim = c(0,2,50,2000))"

I think it can not find the commands and i don't know why.
I had load the packages MASS, sp and soiltexture. What is my mistake.
I would be proud of a helpful answer.
Thanks