Displaying 2 results from an estimated 2 matches for "acidif".
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acidic
2008 Jun 20
5
Plotting barplot and scatterplot on same device - x-axis problem
...unable to find out how
this is changed.
http://www.nabble.com/file/p18025066/pic.jpeg
I have added the script if this is of interrest:
par(mar = c(7, 4, 4, 2) + 0.1)
barplot(rbind(data$Asn,data$Glu,data$NH3),
beside=T,
axes=TRUE,
xlim=c(0,57),
ylim=c(0,10))
par(new=TRUE)
plot(1:14,data$Acidification.time,
axes=FALSE,
type="b",
xlab="",
ylab="",
xlim=c(0.3,14.7),
ylim=c(6,8))
axis(1,pos=6,
labels=FALSE,
at=c(0.3,1:14,14.7))
text(1:14, par("usr")[3], srt = 90, adj = 1,
labels = data$Month, xpd = TRUE)
axis(4,pos=14.7)
All help will be g...
2008 Feb 15
1
How to estimate the parameters of differential equations from data
Hello list
I have a theoretical differential equation model (two coupled differential
equations) describing the acidification of dairy cultures in milk:
dX/dt = f(H, param)*X
dH/dt = g(param)*dX/dt
pH = -log10(H)
I also have actual data of the same.
I would like to estimate the parameters of the theoretical model from real
data, but don't know how to go about it in R (I'm fairly new to R). Is
there an R...