Displaying 20 results from an estimated 116 matches for "rajarshi".
2003 Oct 01
1
question about predictions with linear models
...= 16
Why do I get a different length? Furthermore, the original formula
specified the variable tdepv which is not in the dataframe that I send
to predict() - should I also make a variable called tdepv in the
dataframe y?
Thanks,
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Rajarshi Guha <rxg218 at psu.edu> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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The way to love anything is to realize that it might be lost.
2003 Nov 10
10
shuffling a vector
...aking a new vector from the original one using these random indices.
However, is there an alternative (more elegant) method to do this? I
tried help.search('shuffle') but it does'nt return anything relevant.
Thanks,
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Rajarshi Guha <rxg218 at psu.edu> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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Q: What is a dyslexic, agnostic, insomniac?
A: Someone who lays awake at night wondering if there really...
2003 Nov 10
5
attaching data to any object
...on I make a lot of objects
and save when exiting. Usually I note down seperately what each object
is about. Is it possible to attach data to any object which would
essentially be a short note explaining the meaning of it?
Thanks,
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Rajarshi Guha <rxg218 at psu.edu> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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The Heineken Uncertainty Principle:
You can never be sure how many beers you had last night.
2003 Sep 03
3
plotting a distribution curves
...urves (say normal or chi sq etc)
from within R?
For example I looked up the *chisq family of functions but I'm not sure
as to how I would use them to generate a plot of the chi sq distribution
(for arbitrary d.o.f).
Thanks,
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Rajarshi Guha <rajarshi at presidency.com> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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Did you hear that two rabbits escaped from the zoo and so far they have
only recaptured 116 of t...
2011 Sep 19
14
gmaps4rails "acts_as_gmappable" error
Hi all,
I started to see fun of gmaps4rails gem from
https://github.com/apneadiving/Google-Maps-for-Rails.
After everything done. When visited the locahost, i got the following
error.
undefined local variable or method `acts_as_gmappable'' for #<Class:
0x31a9da8>
the error is due to i have line "acts_as_gmappable" in my model.
Anybody knows how this is
2004 Oct 15
0
SJava 0.65 and R 2.0.0 (slightly long)
...: Couldn't start Java Virtual Machine: Cannot find
the Omegahat interface manager class. Check you classpath!
>From the output fof javaConfig() I was'nt surprised. However I thought
that the install would set the paths to the OmegaHat interface manager.
So I set the classpath to
/home/rajarshi/src/Rlibrary/SJava/org/omegahat/Jars/../Interfaces: \
/home/rajarshi/src/Rlibrary/SJava/org/omegahat/Jars/../R/Java: \
/home/rajarshi/src/Rlibrary/SJava/org/omegahat/Jars/antlr.jar: \
/home/rajarshi/src/Rlibrary/SJava/org/omegahat/Jars/Environment.jar: \
/home/rajarshi/src/Rlibrary/SJava/org/omegah...
2009 Jun 23
2
an idiom to handle i'th element of a set of lists simultaneously
...list I could use lapply, but
for more than one list I'm using a for loop. Is there an idiom that would
let me use something like lapply, but the function specified to lappy would
have access to an element from each list? (In Python, I would have used for
a,b,c in zip(x,y,z): ...)
Thanks,
--
Rajarshi Guha
[[alternative HTML version deleted]]
2003 Mar 03
2
saving a plot to a file
...GIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi,
I'm a new user of R and have managed to make a plot of a histogram. Is there
any way I set the title and axes labels and then save the plot as an image
(png/gif)?
Thanks
- --
- -------------------------------------------------------------------
Rajarshi Guha <rajarshi at presidency.com> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
- -------------------------------------------------------------------
"A fractal is by definition a set for which the Hausdorff Besicovitch
dimension strictl...
2011 Jan 31
2
identify subsets based on two grouping factors
...t.grp1 <- cut(x$grp1, 3)
cut.grp2 <- cut(x$grp2, 3)
Thus, for each combination of levels in cut.grp1 and cut.grp2, I'd
like to obtain the distribution of levels obs. I know I can loop over
each pair of levels in cut.grp1 and cut.grp2, but is there a more
elegant way to achieve this?
--
Rajarshi Guha
NIH Chemical Genomics Center
2010 Jul 27
3
xyplot with all columns of a data.frame on a single plot
...3 curves by doing
xyplot(D1 + D2 + D3 ~ X, data)
but in some cases I might have columns D1 ... D10.
Is there a way to plot all 10 columns without having to specify each
individual term?
(By analogy with formulae in lm, I thought, xyplot(. ~ X, data) would
work, but it didn't)
Thanks,
--
Rajarshi Guha
NIH Chemical Genomics Center
2005 May 26
5
a more elegant approach to getting the majority level
...more elegant way to do it:
x <- factor(sample(1:0, 5,replace=TRUE))
levels(x)[ which( as.logical((table(x) == max(table(x)))) == TRUE ) ]
(The length of x will always be an odd number, so I wont get a tie in
max())
Thanks,
-------------------------------------------------------------------
Rajarshi Guha <rxg218 at psu.edu> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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Alcohol, an alternative to your self
- 'Alcohol' by the Bare Naked Ladies
2007 Aug 13
4
vertically oriented color key in heatmaps
...r, I was thinking of a
vertical bar with the color range rather than the style that gplots
provides.
Is there any package (or code snippet) that would let me add a
vertical color key to an image() or heatmap plot?
Thanks,
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Rajarshi Guha <rguha at indiana.edu>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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Q: What do you get when you put a spinning flywheel in a casket and
turn a corner?
A: A funeral precession.
2003 Oct 02
4
using a string as the formula in rlm
...I get:
Error in qr(x) : NA/NaN/Inf in foreign function call (arg 1)
In addition: Warning message:
NAs introduced by coercion
I can understand why this method results in the error but is there any
way to get around this?
Thanks,
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Rajarshi Guha <rxg218 at psu.edu> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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Gods are fragile things; they may be killed by a whiff of
science or a dose of common sense.
-- Chapman C...
2003 Sep 30
2
subsetting a matrix
...ake out 4 columns and 161 rows.
Thus I made a 161 x 2 array I and filled it up with the row,col indices.
However doing,
X[ I ] gives me a vector of the extracted elements. Is there anyway I
can coerce this into a 161 x 4 matrix?
-------------------------------------------------------------------
Rajarshi Guha <rxg218 at psu.edu> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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Disembowelling takes guts.
2003 Sep 14
1
title for plot contain 4 subplots
...places this title as the title of the last plot and not the whole
page. The mtext help page says that I can use it to write text to the
outer margins of the device region but I cant seem to work out how I can
acheive this.
Thanks
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Rajarshi Guha <rajarshi at presidency.com> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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Q: What do you get when you put a spinning flywheel in a casket and
turn a corner?
A: A funeral...
2003 Sep 15
1
question regarding ks.test()
...e H_0 is
rejected. However I dont calculate a P value. Is this method
significantly different from the method used in R?
Since I get the same value of D in both methods is there any reason to
prefer one over the other?
Thanks,
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Rajarshi Guha <rajarshi at presidency.com> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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After a number of decimal places, nobody gives a damn.
2004 Mar 02
3
using object reference
...9; but
the the after returning from the function the attribute of x does not
get changed.
Could anybody point out how I could achieve this? Do I need to use the
R.oo package or can this be done without external packages?
Thanks,
-------------------------------------------------------------------
Rajarshi Guha <rxg218 at psu.edu> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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How I wish I were what I was when I wished I were what I am.
2004 Feb 06
3
a grep/regexpr problem
...ned) why is regexpr failing?
Finally, could anybody provide a hint as to how I should modify the
regex to get the sequence between {}. (I've used the same regex in
Python code to get the sequence and it works fine.)
Thanks,
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Rajarshi Guha <rxg218 at psu.edu> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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Entropy requires no maintenance.
-- Markoff Chaney
2003 Dec 03
3
checking for identical columns in a mxn matrix
...experience has shown me, getting rid of loops is a good idea
:) Would anybody have any suggestions as to how I could do this job more
efficiently.
(It would be nice to know which columns are identical but thats not a
necessity.)
-------------------------------------------------------------------
Rajarshi Guha <rxg218 at psu.edu> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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Entropy isn't what it used to be.
2004 May 20
2
column sorting a matrix with indices returned
...g,
> sx <- apply(x, c(2), sort, index.return=T)
results in sx being a series of lists. I know I could then go through
the list and create a sorted matrix and an index matrix.
But is there a neater way to do this?
Thanks,
-------------------------------------------------------------------
Rajarshi Guha <rxg218 at psu.edu> <http://jijo.cjb.net>
GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
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Accuracy, n.:
The vice of being right