Displaying 5 results from an estimated 5 matches for "dwaf".
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deaf
1999 Aug 03
2
R is not for Relational
....
I was musing on data.frames when I decided what I needed was a SQL
like 'select' statement.
Before I get involved in writing something like that, has anyone else
written anything that allows a relational like algebra on data.frames?
Thanks,
John Carter EMail: ece at dwaf-hri.pwv.gov.za
Telephone : 27-12-808-0374x194 Fax:- 27-12-808-0338
<http://www.geocities.com/SoHo/Cafe/5947> or <http://iwqs.pwv.gov.za>
When I grow up, I'm going to be a range of mountains!
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r-help mai...
1999 Apr 26
1
date
I have read in the date, using chron, and plotted a time-series of
concentration vs date. How do display the date on the x-axis?
"This universe never did make sense; I suspect it was built on a government contract."
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r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send
1999 Apr 28
0
chron and julian
Another beginner's question. Still trying trying to read and and plot a simple
tds-value vs time.
input file: onedat
date time tds
1997-12-29 13:35:00 411
> onedat<-read.table("onedat",header=T)
attach(onedat)
> x<-chron(dates=as.vector(date),times=as.vector(time),
format=c("y-md","h:m:s"))
> x
[1] (97-12-29 13:35:00)
See my problem? Chron
1999 May 03
1
bug
-------------------------------------------------
SAMPLE SCRIPT:
x<-rnorm(50)
y<-12*x+30*rnorm(10)
ff<-lm(y~x)
sink("output.txt")
print(ff) # this work give basic coefficients
summary(ff) # should give Rsquare etc
sink()
-------------------------------------------------
Having fitted a curve on a data set, I am trying
to write all the statistics about the fit to a
file.
In
1999 Apr 30
2
Graphs
I am trying to use the Windows version of R to do the following:
- Have a Delphi front-end which gets the user input
- Delphi will produce a R script, do a system call to R to
calculate the statistics.
Is there a better way? Maybe a library one can use in Delphi or
Visual C?
- How do one see a graph? A graph is plotted in a window which
IMMEDIATELY closes afterwords so that one can't