Displaying 3 results from an estimated 3 matches for "oducible".
2018 May 19
1
Bug on qr.coef when qr is created by a zero matrix with colnames and all y equals zero
Dear maintainers,
I'm reporting a bug in qr.coef that mishandles the colnames of matrix. A minimal reproducible example is as follows:
x <- cbind(rep(0, 10), rep(0, 10))
y <- rep(0, 10)
q <- qr.default(x)
qr.coef(q, y)
[1] NA NA
If x has colnames, then qr.coef will end up with an error:
x <- cbind(x1 = rep(0, 10), x2 = rep(0, 10))
y <- rep(0, 10)
q <- qr.default(x)
qr.coef(q, y)
Error in...
2010 Nov 10
4
Installing R and an editor on a USB drive
Hi,
I have adviced my students to install R and an editor on a USB drive for
working in the computer class. With R everything works fine following these
instructions: http://personal.bgsu.edu/~mrizzo/Rmisc/usbR.htm.
But several editors (e.g., Tinn-R and WinEdt) require administrator rights.
I have found out that Emacs (Vincent Goulet's Emacs for Windows Modified
2013 Apr 22
7
Multiple lon lat points in the map with ggplot2
Hello R users,
For the last few days I am struggling with the following task:
my data.frame:
A1 A2 A3 B1 B2
B3
58.81 53.292 54.501 13.013 17.39 19.407 56.02 56.251 54.033 20.099 13.15
10.411 55.376 53.099 57.625 13.396 21.031 13.22 58.584 53.194 54.218
13.038 16.854 19.289 55.7 55.921 53.847 19.942 13.153 9.828 55.093 52.934