Displaying 3 results from an estimated 3 matches for "titer".
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timer
2011 Nov 21
1
Lattice graph help
...'t use this correctly.
library(lattice)
library(latticeExtra)
n=as.factor(c(1:5,1:5))
Breed=as.factor(c(rep("Cow",3),rep("Sheep",3),rep("Goat",2),rep("Yak",2)))
Test=as.factor(c(rep("Bovine viral diarrhoea",5),rep("Border Disease",5)))
Titer=as.numeric(c(10,20,30,40, 50,15, 25, 35, 45, 55))
heif=data.frame(n,Breed, Test, Titer)
x=barchart( heif[,4]~ heif[,1]| heif[,3]+ heif[,2] ,ylab="titer",
layout = c(2,2), scales=list(x=list(at=c(seq(0, 60, by = 15)),tick.number=c(5),
labels=c(seq(0, 60, by = 15))))
)
useOuterStrips(x)
Ki...
2011 Nov 22
0
Lattice graph strips and axes
...font size of 'x'.
library(lattice)
library(latticeExtra)
n=as.factor(c(1:5,1:5))
Breed=as.factor(c(rep("Cow",3),rep("Sheep",3),rep("Goat",2),rep("Yak",2)))
Test=as.factor(c(rep("Bovine viral diarrhoea",5),rep("Border Disease",5)))
Titer=as.numeric(c(10,20,30,40, 50,15, 25, 35, 45, 55))
heif=data.frame(n,Breed, Test, Titer)
x=barchart( Titer ~ n | Test+Breed, data=heif,
layout = c(2,4),between = list(y = c(0.5),x = c(0.5)),scales = list(x = list(alternating = 1, tck = c(1,0)),
y = list(alternating = 1, tck = c(1,0))), xlab = "...
2024 Jan 30
2
Use of geometric mean for geochemical concentrations
Dear Rich,
It depends how the data is generated.
Although I am not an expert in ecology, I can explain it based on a biomedical example.
Certain variables are generated geometrically (exponentially), e.g. MIC or Titer.
MIC = Minimum Inhibitory Concentration for bacterial resistance
Titer = dilution which still has an effect, e.g. serially diluting blood samples;
Obviously, diluting the samples will generate the following concentrations:
1, 1/2, 1.4, 1/8, 1/16, ...
(or the reciprocal: 1, 2, 4, 8, 16, ...)
It m...