Displaying 20 results from an estimated 4000 matches similar to: "Howto access object of object"
2009 Mar 20
1
Howto Supress Extra Blank Page in gridBase
Dear all,
I have a simple plot using "gridBase" like this.
The problem occurs whenever I execute this code
there is always a blank page created before the actual plot.
How can we disable that blank page?
I am using: R version 2.7.2 (2008-08-25)
and gridBase version: 0.4-3
__ BEGIN__
library(grid)
library(gridBase)
opar <- par(no.readonly=TRUE)
par(opar)
grid.newpage()
2009 Feb 18
1
Plotting Binned Data
Dear all,
I have a binned data that looks like this:
> dat
(-1,9] (9,19] (19,29] (29,39] (39,49] (49,59] (59,69] (69,79]
10063374 79 16 4 3 4 4 3
(79,89] (89,99]
6 2
I tried to plot a histogram overlayed with curve.
With the following snippet:
library(lattice)
pdf("myfile.pdf")
hist(dat)
2008 Jun 20
1
Howto access V-base only column in a data frame
Hi,
Suppose I have the following data frame:
V1 V2 V3 var
1 100 200 400 2.3
2 40.5 1.2 20.3
...
In this example the maximum V column is 3.
In my code there the column number can be varied.
My question is how can I access data frame
from column V1 up to Vk (some "k" and excluding'var' column)?
- Gundala Viswanath
Jakarta - Indonesia
2008 Aug 04
2
Howto Smooth a Curve Created with the Point Function
Hi all,
I have this figure:
http://docs.google.com/Doc?id=df5zfsj4_103rjt2v4d5
created with the following steps:
> x
[1] 90.4 57.8 77.0 103.7 55.4 217.5 68.1 85.3 152.0 113.0 97.1 89.9
[13] 68.1 83.7 77.4 34.5 104.9 170.3 88.6 88.1 108.8 77.4 85.6 82.7
[25] 81.3 108.0 49.5 71.0 85.7 99.3 203.5 275.9 51.1 84.8 16.5 72.6
[37] 160.5 158.3 136.7 140.0 98.4 116.1
2008 Jun 24
5
Measuring Goodness of a Matrix
Hi all,
Suppose I have 2 matrices A and B.
And I want to measure how good each of this matrix is.
So I intend to compare A and B with another "gold standard"
matrix X. Meaning the more similar a matrix to X the better it is.
What is the common way in R to
measure matrix similarity (ie. A vs X, and B vs X) ?
- Gundala Viswanath
Jakarta - Indonesia
2009 Jan 13
3
Returning Non-Unique Index with Which (alternatives?)
Dear all,
I tried to find index in repo given a query with this:
> repo <- c("AAA", "AAT", "AAC", "AAG", "ATA", "ATT")
> qr <- c("AAC", "ATT", "ATT")
> which(repo%in%qr)
[1] 3 6
Note that the query contain repeating elements, yet
the output of which only returns unique.
How can I make it
2008 Jun 23
3
Getting only label column of a data frame
Hi,
How can I extract the label only from a given data frame.
Fore example from this data frame.
> print(dataf)
V1 V2 V3 V4 V5 V6 V7 V8 V9
11145 14.3 17.1 31.2 41.7 45.8 49.8 68.6 70.6 72.9
3545 10.2 15.6 20.9 23.2 31.4 31.7 36.2 48.4 51.9
8951 15.2 17.5 20.0 21.4 32.4
2009 Jan 06
5
Changing Matrix Header
Dear all,
I have the following matrix.
> dat
A A A A A A A A A A
[1,] 0 0 0 0 0 0 0 0 0 0
[2,] 0 0 0 0 0 0 0 0 0 1
[3,] 0 0 0 0 0 0 0 0 0 2
How can I change it into:
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
[1,] 0 0 0 0 0 0 0 0 0 0
[2,] 0 0 0 0 0 0 0 0 0 1
2008 Jul 07
4
Plot Mixtures of Synthetically Generated Gamma Distributions
Hi,
I have the following vector
which is created from 3 distinct distribution (three components) of gamma:
x=c(rgamma(30,shape=.2,scale=14),rgamma(30,shape=12,scale=10),rgamma(30,shape=5,scale=6))
I want to plot the density curve of X, in a way that it shows
a distinct 3 curves that represent each component.
How can I do that?
I tried this but doesn't work:
lines(density(x))
Please
2008 Aug 01
3
Grouping Index of Matrix Based on Certain Condition
Hi,
I have the following (M x N) matrix, where M = 10 and N =2
What I intend to do is to group index of (M) based on this condition
of "x_mn" , namely
For each M,
If x_m1 > x_m2, assign index of M to Group1
otherwise assign index of M into Group 2
> x
[,1] [,2]
[1,] 4.482909e-01 0.55170907
[2,] 9.479594e-01 0.05204063
[3,] 8.923553e-01 0.10764474
2008 Sep 09
3
Splitting Data Frame into Two Based on Source Array
Dear all,
Suppose I have this data frame:
> data_main
V1 V2
foo 13.1
bar 12.0
qux 10.4
cho 20.33
pox 8.21
And I want to split the data into two parts
first part are the one contain in the source array:
> src
[1] "bar" "pox"
and the other one the complement.
In the end we hope to get this two dataframes:
> data_child1
V1 V2
bar 13.1
pox
2008 Jul 29
1
Howto Draw Bimodal Gamma Curve with User Supplied Parameters
Hi,
Suppose I have the following vector (data points):
> x
[1] 36.0 57.3 73.3 92.0 300.4 80.9 19.8 31.4 85.8 44.9 24.6 48.0
[13] 28.0 38.3 85.2 103.6 154.4 128.5 38.3 72.4 122.7 123.1 41.8 21.7
[25] 143.6 120.2 46.6 29.2 44.8 25.0 57.3 96.4 29.4 62.9 66.4 30.0
[37] 24.1 14.8 56.6 102.4 117.5 90.4 37.2 79.6 27.8 17.1 26.6 16.3
[49] 41.4 48.9 24.1
2009 Feb 26
3
Modifying Names from (x,y] into x
Hi,
I have the following data that looks like this:
> names(dat)
[1] "(-2329,-2319]" "(-1399,-1389]" "(-669.4,-659.4]"
How can I modify those names into just this?
[1] -2329 -1399 -669.4
- Gundala Viswanath
Jakarta - Indonesia
2009 Jan 11
3
Converting Numerical Matrix to List of Strings
Hi all,
Given a matrix:
> mat
[,1] [,2] [,3]
[1,] 0 0 0
[2,] 3 3 3
[3,] 1 1 1
[4,] 2 1 1
How can I convert it to a list of strings:
> desired_output
[1] "aaa" "ttt" "ccc" "gcc"
In principle:
1. Number of Column in matrix = length of string (= 3)
2. Number of Row in matrix = length of vector ( = 4).
3.
2008 Dec 22
3
Convert ASCII string to Decimal in R (vice versa) was: Hex
Hi Dieter,
Sorry my mistake. I wanted to convert them
into Decimal (not Hexadecimal).
Given this string, the desired answer follows:
> ascii_str <- "ORQ>IK"
79 82 81 62 73 75
> ascii_str2 <- "FDC"
70 68 67
- Gundala Viswanath
Jakarta - Indonesia
On Mon, Dec 22, 2008 at 5:49 PM, Dieter Menne
<dieter.menne at menne-biomed.de> wrote:
> Gundala
2008 Jul 16
2
Howto view function's source code of an installed package
Hi,
Is there a way I can view the functions source code of a
package I installed in my PC.
For example I downloaded the great "mixtools" package.
I want to see the source code of one of its function "normalmixEM"
Is there a way to do it? Presumably from R command prompt?
I tried to take a look at the zip file, but somehow I can't seem
to find the file on which I can
2008 Sep 05
2
Package for Tidying-up R-code
Dear all,
Is there any such package?
I am thinking of something equivalent to Perl::Tidy.
For example with VI editor one can visual highlight a portion
of Perlcode and then issue the command:
!perltidy
then the code will be automatically arranged.
- Gundala Viswanath
Jakarta - Indonesia
2009 Jan 09
4
Extracting File Basename without Extension
Dear all,
The basename() function returns the extension also:
> myfile <- "path1/path2/myoutput.txt"
> basename(myfile)
[1] "myoutput.txt"
Is there any other function where it just returns
plain base:
"myoutput"
i.e. without 'txt'
- Gundala Viswanath
Jakarta - Indonesia
2008 Dec 24
2
Compressing String in R
Dear all,
What's the R way to compress the string into smaller 2~3 char/digit length.
In particular I want to compress string of length >=30 characters,
e.g. ACGATACGGCGACCACCGAGATCTACACTCTTCC
The reason I want to do that is because, there are billions
of such string I want to print out. And I need to save disk space.
- Gundala Viswanath
Jakarta - Indonesia
2009 Jan 13
2
Can't Destroy Dim Names
Dear all,
I have the following matrix:
> str(mat)
Named chr [1:32268] "yQAAA" "jQAAQ" "UQAAg" "FQAAw" "1QABA" ...
- attr(*, "names")= chr [1:32268] "CAAAAAAAAA" "CAAAAAAAAC"
"CAAAAAAAAG" "CAAAAAAAAT" ...
I want to destroy the attribute yielding only this:
> str(mat)
Named chr [1:32268]