Displaying 20 results from an estimated 100 matches similar to: "R Code for X-Tab with Row/Col Proportions, Expected Vals and Tests"
2005 Jun 23
1
the dimname of a table
i have a data frame(dat) which has many variables.and i use the following script to get the crosstable.
>danx2<-c("x1.1","x1.2","x1.3","x1.4","x1.5","x2","x4","x5","x6","x7","x8.1","x8.2","x8.3","x8.4","x11",
2002 Feb 13
3
xtabs
Hi,
In Splus if I call the function crosstabs() the output is a contigency
table; in each cell of the table is printed: N, N/RowTotal,
N/ColTotal, N/Total. N is the number of observations in each cell.
The same call to xtabs() in R will produce the contigency table but the
only entry in each cell is N.
How can I get the same relative frequencies that crosstabs() gives?
Thanks,
mike
--
2020 Sep 24
1
How to use `[` without evaluating the arguments.
Hello R-devel,
I am currently attempting to implement an API similar to data.table wherein single bracket subsetting can accept an unquoted expression to be evaluated in the context of my object.
A simple example from the data.table package looks like this:
DT <- data.table(col1 = c('a', 'b', 'c'), col2 = c('x', 'y', 'z'))
DT[col1 ==
2009 Aug 22
3
Help on comparing two matrices
Hi,
I need to compare two matrices with each other. If you can get one of
them out of the other one by resorting the rows and/or the columns, then
both of them are equal, otherwise they're not. A matrix could look like
this:
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8]
[1,] 0 1 1 1 0 1 1 0
[2,] 1 1 0 0 0 1 0 1
[3,] 1 0 1 0 0
2009 Mar 21
1
Forestplot () box size question
Hi All,
I have been able to modify the x-axis to start at zero by adding xlow
and xhigh parameters; that was pretty simple. I have been unable to
find the location of the code that would turn off the information
weighting of the box size (I have smaller randomized trials getting
less weight than a much larger non-randomized trial). The function
is forestplot() from rmeta.
Thanks for any
2007 Nov 22
5
testing independence of categorical variables
hi,
is there a way of calculating of measuring dependence between two
categorical variables. i tried using the chi square test to test for
independence but i got error saying that the lengths of the two
vectors don't match. Suppose X and Y are two factors. X has 5 levels
and Y has 7 levels. This is what i tried doing
>temp<-chisq.test(x,y)
but got error "the lengths of the two
2006 May 02
1
Is there a bug in CrossTable (gmodels)
Library gmodels include a function CrossTable that is useful for
crosstabulation. In the help, it is indicated that one can call this
function as CrossTable(data), were data is a matrix. However, when I try
to use this option, it doesn't help. Any idea? Is there a bug?
Thanks for your help.
Prof. Albert Sorribas
Grup de Biomatem?tica i Bioestad?stica
Departament de Ci?ncies M?diques B?siques
2006 Jun 13
3
AJAX data grid for Rails?
Has anyone used an AJAX data grid with Rails?
I am rebuilding a copy of the venture source web site as a first ruby/
rails exercise. If anyone has used a javascript data grid with
Rails, I would appreciate sample code, or notes on your experience.
The controller action would presumably communicate with the data grid
component running on the browser by extracting data from a relational
2009 Jul 21
1
problem with heatmap.2 in package gplots generating non-finite breaks
I have written a wrapper for heatmap.2 called
heatmap.w.row.and.col.clust which auto-generates breaks using
breaks<-round((c(seq(from=(-20 * stddev), to=(20 * stddev))))/20,
digits = 2) #(stddev in this case = 2.5)
This has always worked well in the past but now I am getting an error
that non-finite breaks are being generated. Drilling down, it seems
that my wrapper is generating finite
2004 Mar 16
24
Softfax/spandsp
Hi all,
After a long time having no time, I have finally done some fresh work on
my software fax machine. I have replaced the original carrier tracking
with something more robust. I have also added 4800, and 2400 bits per
second modes, and cleaned up a few bugs in areas like superfine mode
operation. I apologise for this update taking so long.
At ftp://ftp.opencall.org/pub/spandsp you will
2010 Jul 14
3
sample sleep command killed
I re-wrote the compile script to build klibc (cleaning up how I do it,
and how to find the source tarballs). It seems to be compiling fine.
I tried several of the commands in usr/utils/static and most one.
However, the sleep command fails in a strange way (EINVAL on execve):
================================================================
faraday/phil /home/phil/klibc-project-0 581> strace
2011 Aug 29
1
Generating contingency tables from the null
Hi all,
I have a 3x4 contingency table with row totals all being 100. I want to
generate 3 x 4 tables from the null distribution. Which R function can do
this?
--
Thanks,
Jim.
[[alternative HTML version deleted]]
2004 Apr 28
1
spandsp rxfax crashes *
Rxfax answers, makes handshake, and crashes once the page starts to send. It
receives a .tif file of 8 bytes.
Asterisk dumps core - gdb shows :
#0 0x281fd86c in t4_rx_putbit () from /usr/local/lib/libspandsp.so.0
#1 0x281fea3c in fast_putbit () from /usr/local/lib/libspandsp.so.0
#2 0x28208324 in decode_baud () from /usr/local/lib/libspandsp.so.0
#3 0x2820893f in process_baud () from
2004 Jul 13
1
fax still fails, ideas sought! Re: rxfax/spa ndsp fails to decode
Sorry to bore you more with the clock issue, but have you check
/proc/zaptel/<span> to make sure it's not missing interrupts?
There's also an option to record the audio for the fax, you could listen to
that vs a recorded file that will receive correctly on a fax machine and see
whether there is an obvious difference? (Good luck, that'll be really
scraping the barrel!!)
Does it
2004 Jul 12
1
rxfax/spandsp fails to decode
Hi,
I just sent this to Steve Underwood, but then found a bunch of posts on the
mailing list about similar issues.. does anyone have the fix?
I'm running asterisk CVS-HEAD-06/28/04-18:13:13, spandsp 0.0.1k, libtif 3.5.7
one thing i just noticed is that calls come in with format '72' which is
G711A-law or LinearPCM.. it uses PCM for the call, i assume this is ok
the results of RxFAX
2006 Feb 02
0
Heatmap.2 axes question
I'm suppressing the labeling of my rows and columns in heatmap.2 using the
commands:
labRow = " ", labCol = " "
But I'd like to annotate them again using the axis command:
axis(1, at=seq(500, 1000, 500))
mtext("Group 1", "Group 2")
For some reason however it appears that the axis command is having no
effect. My complete
2007 Dec 16
0
levelplot border and dendrogram width
Hello,
I'm trying to learn how to use lattice and levelplot in particular.
There are three elements of customizing the plots I'm stuck with:
a) Is there a way to put borders around each "cell" within a
level-plot. I'm trying to do something like the
colsep/rowsep/sepcolor/sepwidth parameters of heatmap.2 in gplots
b) Can I alter the line-width of dendrogram added
2003 Jan 21
1
bug in CrossTable (package:gregmisc) (PR#2480)
Full_Name: John Hendrickx
Version: 1.6.0
OS: Windows 98
Submission from: (NULL) (137.224.174.216)
CrossTable in the "gregmisc" package fails when the fisher.exact test produces
an error (I suspect this is because the number of cases is too large). This can
be fixed using "FTt <- try(fisher.test(t, alternative = "two.sided"))" or by
making the test optional.
2004 Oct 14
2
Problem with R version 2.0.0 (and patched)
What I am doing : create a simple correlation matrix on 41 variables, then
plot an heatmap with this program :
library(gplots)
mat<-cor(temp.alln,use="pairwise.complete.obs")
hm<-heatmap.2(mat,symm=T)
HM<-format(round(mat[hm[[1]],hm[[2]]],2))
library(RColorBrewer)
brewer.pal(10,"Spectral")->mp
heatmap.2(mat, symm = TRUE, col = mp,
2005 Jan 31
2
Automatically Extracting F- and P- vals from ANOVA
Dear R community,
I'm currently using R to analyze functional Magnetic Resonance Imaging
data. Each analysis involves running ~120,000 repeated-measures
ANOVAs.
I would like to know if there is any automatic way to access the F-
and P-value data that are associated with each of these 120,000
ANOVAs.
For example, if the summary output (for the 1st ANOVA of 120,000)
shows the following value