Displaying 20 results from an estimated 10000 matches similar to: "Force printing of excluded axis annotations"
2011 Dec 05
3
adding hyperlinked text to pdf plot
Howdy,
I have read that if you put a URL in the text of a plot being saved
into pdf, the result is a functional hyperlink. I am interested in
having text in a plot that is linked to a URL, but I would like the
text to be something other than the URL. Is this possible? Thank you.
- Fincher
2010 Dec 13
2
inconsistency with cor() - "x must be numeric"
Howdy,
I have written a small function to generate a simple plot and my
colleague is having an error when attempting to run it. Essentially I loop
through categories in a data frame and take the average value for each
category The categories are in $V1, subset first then mean taken and
concatenated to previous values using rbind(c("label",mean(data$V6)). The
result is a two-column
2011 Aug 08
1
Creating a simple 1-row heatmap
Howdy,
I am trying to make a simple monochrome heatmap from 1 row of data.
Essentially, I just want a long bar where black represents the max value in
the data, white is the minimum, and all values in between are interpolated
appropriately. I have tried using heatmap and heatmap.2, but both have
issues. heatmap seems to be restricted to only drawing a square plot, and
this data requires a
2010 Jul 08
1
plotting lines when data has missing/NA values
Howdy,
I have done many searches and can't seem to find a way around this.
I am reading in a .csv file where each row is a dataset and each
column represents a position. The values are sparse (there are 2003
positions but usually only 100-200 values) and the idea is to be able
to plot each dataset (row) and overlay them in different combinations.
What I would like to do is have a plot
2010 May 14
1
finding the plot limits generated by default
I have two datasets that I would like to plot in a single figure. The first
plot is generated by a function that then takes a subset of the data. (It
is biological data so it is usually by chromosome e.g.
function(data1,subset="chr8") ) Since not only are the chromosomes different
sizes, but across different datasets there may be different numbers of
points for a single chromosome, I
2008 Dec 26
2
about randomForest
hello,
I want to use randomForest to classify a matrix which is 331030?42,the last column is class signal.I use ?
Memebers.rf<-randomForest(class~.,data=Memebers,proximity=TRUE,mtry=6,ntree=200) which told me" the error is matrix(0,n,n) set too elements"
then I use:
Memebers.rf<-randomForest(class~.,data=Memebers,importance=TRUE,proximity=TRUE) which told me"the error is
2012 Mar 23
1
Memory limits for MDSplot in randomForest package
Hello,
I am struggling to produce an MDS plot using the randomForest package
with a moderately large data set. My data set has one categorical
response variables, 7 predictor variables and just under 19000
observations. That means my proximity matrix is approximately 133000
by 133000 which is quite large. To train a random forest on this large
a dataset I have to use my institutions high
2012 Oct 22
1
random forest
Hi all,
Can some one tell me the difference between the following two formulas?
1. epiG.rf <-randomForest(gamma~.,data=data, na.action = na.fail,ntree =
300,xtest = NULL, ytest = NULL,replace = T, proximity =F)
2.epiG.rf <-randomForest(gamma~.,data=data, na.action = na.fail,ntree =
300,xtest = NULL, ytest = NULL,replace = T, proximity =F)
[[alternative HTML version deleted]]
2010 Oct 21
1
RandomForest Proximity Matrix
Greetings R Users!
I am posting to inquire about the proximity matrix in the randomForest
R-package. I am having difficulty pushing very large data through the
algorithm and it appears to hang on the building of the prox matrix. I have
read on Dr. Breiman's website that in the original code a choice can be made
between using an N x N matrix OR to increase the ability to compute large
2011 Sep 04
5
Ranking and term proximity
Hi,
I was reading an article recently about how google ranks results
(among many other things of course) based on the proximity of the
search terms in the source documents. In addition, the position of
the search terms in the search query string itself is also taken into
consideration when determining how important each term is.
Does Xapian do something similar - at least for the first part?
2010 May 20
1
finding euclidean proximate points in two datasets
Hello all,
I've been pouring through the various spatial packages, but haven't come
across the right thing yet.
Given a set of points in 2-d space X, i'm trying to find the subset of
points in Y proximate to each point in X. Furthermore, the proximity
threshold of each point in X differs (X$threshold). I've constructed
this myself already, but it's horrificly slow with a
2007 Dec 21
3
Finding overlaps in vector
<posted & mailed>
Dear all,
I'm trying to solve the problem, of how to find clusters of values in a
vector that are closer than a given value. Illustrated this might look as
follows:
vector <- c(0,0.45,1,2,3,3.25,3.33,3.75,4.1,5,6,6.45,7,7.1,8)
When using '0.5' as the proximity requirement, the following groups would
result:
0,0.45
3,3.25,3.33,3.75,4.1
6,6.45
7,7.1
2006 Mar 08
1
Unsupervised RandomForest
Dear all,
I am trying to calculate the proximity matrix for a data set with 16 variables
and 6804 observations using random forests. I have a Pentium 4, 3.00GHz
processor with 1 GB of RAM. When I use the command
randomForest(data.scale,proximity=T)
I get the warning message
Error: cannot allocate vector of size 361675 kb
Is this because I have reached the limit of what my computer is
2006 Jan 03
1
randomForest - classifier switch
Hi
I am trying to use randomForest for classification. I am using this
code:
> set.seed(71)
> rf.model <- randomForest(similarity ~ ., data=set1[1:100,],
importance=TRUE, proximity=TRUE)
Warning message:
The response has five or fewer unique values. Are you sure you want to
do regression? in: randomForest.default(m, y, ...)
> rf.model
Call:
randomForest(x = similarity ~ .,
2007 Feb 01
3
SEXP i/o, .Call(), and garbage collection.
Apologies for any obtuseness in the following. We have been working
on Version 2.0 of the randomSurvivalForest CRAN package and we're
encountering a perplexing 'memory not mapped' segfault that we believe
is "influenced" by GC.
We essentially have two R functions, rsf.default(..), and
predict.rsf(..) and two corresponding entry points, rsfGrow(...), and
rsfPredict(...),
2007 Mar 16
0
How can I place axis annotations away from axis?
Hello Experts
I have the following codes and data for 2 interpolation plots.
http://www.nabble.com/file/7206/3d_plot_data.txt 3d_plot_data.txt
data<-read.table("3d_plot_data.txt", header=T)
attach(data)
par(mfrow=c(1,2))
library(akima)
interpolation<-interp(rr,veg_r,predict)
persp(interpolation,theta = -45, phi = 30, ticktype = "detailed", nticks=4,
cex=0.8,
2011 Jan 20
1
randomForest: too many elements specified?
I getting "Error in matrix(0, n, n) : too many elements specified"
while building randomForest model, which looks like memory allocation
error.
Software versions are: randomForest 4.5-25, R version 2.7.1
Dataset is big (~90K rows, ~200 columns), but this is on a big machine (
~120G RAM)
and I call randomForest like this: randomForest(x,y)
i.e. in supervised mode and not requesting
2023 May 09
1
RandomForest tuning the parameters
Hi Sacha,
On second thought, perhaps this is more the direction that you want ...
X2 = cbind(X_train,y_train)
colnames(X2)[3] = "y"
regr2<-randomForest(y~x1+x2, data=X2,maxnodes=10, ntree=10)
regr
regr2
#Make prediction
predictions= predict(regr, X_test)
predictions2= predict(regr2, X_test)
HTH,
Eric
On Tue, May 9, 2023 at 6:40?AM Eric Berger <ericjberger at gmail.com>
2006 Jul 23
1
Iterated Data Input/Output with Random Forests
Hi,
I am currently writing code to input a few thousand files, run them through the
Random Forests package, and then output corresponding results.
When I use the code below:
zz<-textConnection("ex.lm.out", "w")
sink(zz)
2006 Feb 07
1
Omega
Are there any options to forming queries with Omega? For instance can
you specify a proximity search like "file near 5 manager"? If so, where
might I find this documented? I don't see it in the docs directory.
Thanks
Jim.