Displaying 20 results from an estimated 800 matches similar to: "For Subset or Reshaping the Table"
2008 Mar 30
2
Alignment and Reshaping of the matrix
Dear R users,
I have a matrix like
85 .90 86 .89 87 .98 86 .87
88 .98 90 .78 88 .76 89 .56
90 .67 95 .67 89 .89 90 .87
91 .56 96 .87 90 .76 92.98
each pair of columns present a variable name and next the value. I have
matrix with more than 500 rows and column.
Now I want to convert this matrix in to.
85 .90 00 .00 00
86 .00 .89 .00 .87
87 .00 00 .98 00
88 .98 00 .76
2008 Aug 24
3
Igraph library: How to calculate APSP (shortest path matrix) matrix for a subset list of nodes.
Dear R Users,
I have a network of 25000 total nodes and a list of 500 node which is a
subset of all nodes. Now I want to calculate the APSP (all pair shortest
path) matrix only for these 500 nodes.
I would appreciate any help.
Thanks in advance
Dinesh
--
Dinesh Kumar Barupal
Research Associate
Metabolomics Fiehn Lab
UCD Genome Center
451 East Health Science Drive
GBSF Builidng
University of
2008 Nov 06
3
Reshape a matrix
Dear R users,
I have a matrix like
A X 1
B Y 2
C Z 3
I want to reshape this matrix into this format
X Y Z
A 1
B 2
C 3
Thanks in advance for your help.
Dinesh
--
Dinesh Kumar Barupal
Junior Specialist
Metabolomics Fiehn Lab
UCD Genome Center
451 East Health Science Drive
GBSF Builidng
University of California
DAVIS
95616
2008 Mar 25
1
Subset of matrix
Dear R users
I have a big matrix like
6021 1188 790 290 1174 1015 1990 6613 6288
100714
6021 1 0.658 0.688 0.474 0.262 0.163 0.137 0.32
0.252 0.206
1188 0.658 1 0.917 0.245 0.331 0.122 0.148 0.194
0.168 0.171
790 0.688 0.917 1 0.243 0.31 0.122 0.15 0.19
0.171 0.174
290 0.474
2012 Apr 23
1
ggplot2 - geom_bar
Hello,
I've some problem with the ggplot2. Here's a small example:
--8<--
library(ggplot2)
molten <- data.frame(date=c('01','01','01','01',
'02','02','02','02'),
channel=c('red','red','blue','blue',
2009 Apr 07
2
Using as.formula() with the reshape package cast
I am trying to use the "cast" function from the reshape package, where the
formula is not passed in directly, but as the result of the as.formula()
function.
Using reshape v. 0.7.2
I am able to properly melt() by data with:
> molten <- melt(x, id=1:2)
then I can properly cast with this:
> cast(molten, days ~ variable)
but if I try
> cast(molten,
2009 Aug 17
3
Reshape package: Casting data to form a grid
Dear R Users,
I'm trying to use the 'cast' function in the 'reshape' package to convert column-format data to gridded-format data. A sample of my dataset is as follows:
head(finalframe)
Latitude Longitude Temperature OrigLat p-value Blaney
1 -90 -38.75 NA -87.75 17.10167 NA
2 -90 135.75 NA -87.75 17.10167 NA
3 -90 80.25
2010 Sep 16
1
plotting time series using ggplots
Hi,
I would like to plot a bunch of tree ring width data (time series)
using ggplots, but I'm having trouble figuring out how to do it.
My data is in a data.frame, with years as rownames and a distinct tree
ring series in each column. So, something like this:
rwl<-matrix(rnorm(800), nrow = 100)
colnames(rwl) <- paste('V', 1:8, sep = '')
2010 Nov 05
3
table with values as dots in increasing sizes
I was just thinking of a way to present data and if it is possible in R.
I have a data frame that looks as follows (this is just mockup data).
df
location,"species1","species2","species3","species4","species5"
"loc1",0.44,0.28,0.37,-0.24,0.41
"loc2",0.54,0.62,0.34,0.52,0.71
"loc3",-0.33,0.75,-0.34,0.48,0.61
location
2009 Nov 23
1
recognizing variable-names of cast() (package: reshape)
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2009 Sep 08
4
barplot with lines instead of bars
Dear useRs,
I want to plot the following barplot with lines instead of bars. Is there a way?
data <- data.frame(cbind(k = 0:3, fk = c(11, 20,7,2), f0k = c(13.72, 17.64, 7.56, 1.08), fkest = c(11.85, 17.78, 8.89, 1.48)))
d <- t(data[,2:4])
barplot(d, beside=TRUE)
Regards,
Rafael.
____________________________________________________________________________________
[[elided Yahoo
2008 Aug 22
3
simple generation of artificial data with defined features
Dear R-colleagues,
I am quite a newbie to R fighting my stupidity to solve a probably quite
simple problem of generating artificial data with defined features.
I am conducting a study of inter-observer-agreement in
child-bronchoscopy. One of the most important measures is Kappa
according to Fleiss, which is very comfortable available in R through
the irr-package.
Unfortunately medical doctors
2011 Jun 30
2
Points but no lines in qplot.
Dear R helpers,
I have molten data which is : -
> t3
Year variable value
1 2005 ICICI.Bank 274883700000
2 2006 ICICI.Bank 431668500000
3 2007 ICICI.Bank 595153000000
4 2008 ICICI.Bank 630857600000
5 2009 ICICI.Bank 545263300000
6 2005 HDFC.Bank 2658600000
7 2006 HDFC.Bank 7891000000
8 2007 HDFC.Bank 18031100000
9 2008
2009 Apr 30
1
Overlaying graphs from different datasets with ggplot
Dear R-users,
I recently began using the ggplot2 package and I am still in the process of
getting used to it.
My goal would be to plot on the same grid a number of curves derived from
two distinct datasets. The first dataset (called molten.data) looks like
this :
Column names : Perc, Week, Weight
P10 21 333.3554
P90 21 486.0480
P10 22 452.6347
P90 22 563.8263
P10 23 575.0960
P90
2011 Nov 29
2
Help with recast() syntax
Dear Help-Rs,
I have data similar to the following:
DF <- structure(list(X = 1:22, RESULT = structure(c(2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L), .Label = c("NEG", "POS"), class = "factor"), YR_MO = c(201011L,
201012L, 201101L, 201102L, 201103L, 201104L, 201105L, 201106L,
201107L, 201108L, 201109L, 201011L,
2009 Aug 03
2
Scale set of 0 values returns NAN??
Hi,
More questions in my ongoing quest to convert from RapidMiner to R.
One thing has become VERY CLEAR: None of the issues I'm asking about
here are addressed in RapidMiner. How it handles misisng values,
scaling, etc. is hidden within the "black box". Using R is forcing me
to take a much deeper look at my data and how my experiments are
constructed. (That's a very
2010 Apr 19
1
Formatting data, adding column names, use reshape, a newbie question
Hi all,
I'm an R novice.
I have data that's already formatted as "molten" that reshape should be able
to work with. For example, the following was read in with
read.csv(filename,sep=" ", header=FALSE)
V1 V2 V3 V4
V5
1 original book book.source1.txt 328900494 3039.525
2 original book book.source1.txt
2011 May 31
1
reshape::cast: invalid 'yinds' argument
Hi,
I'm using reshape to cast molten data. When I use the following command, R
either crashes (when I use Notepad++) or gives an error (when I use Rgui or
source()), BUT the error occurs not always, maybe only on half the attempts:
w <- cast(v, id + code + productname + year + begin + end + specificDesc +
specificDesc2 ~ type)
Error in merge.data.frame(data, all.combinations, by =
2010 Sep 01
2
ggplot2 multiple group barchart
hi there.. i got a problem with ggplot2.
here my example:
library (ggplot2)
v1 <- c(1,2,3,3,4)
v2 <- c(4,3,1,1,9)
v3 <- c(3,5,7,2,9)
gender <- c("m","f","m","f","f")
d.data <- data.frame (v1, v2, v3, gender)
d.data
x <- names (d.data[1:3])
y <- mean (d.data[1:3])
pl <- ggplot (data=d.data, aes (x=x,y=y))
pl
2009 Jan 26
1
reshape problem: id and variable names not being recognized
Hi everyone. Long time listener, first-time caller here.
I have a data set that's been melted with the excellent reshape package, but
I can't seem to cast it the way I need to.
Here's the melted data's structure:
> str(mdat)
'data.frame': 6978 obs. of 4 variables:
$ VehType : Factor w/ 2 levels "Car","Truck": 1 1 2 1 1 2 1 1 1 1 ...
$ Year :