Dear R users,
I know how to select a subset of a data.frame or a matrix by setting
some criteria, but this time, I have a long index of cases not really
related to 1 or 2 criteria.
And I cannot find a simple way to select cases from another data.frame
based on this index (sublst in this example).
Dear R-users,
I have searched through examples of barplot in R.
But there seems to be no advanced annotation options in R for their barplot.
What I am trying to do is to do some annotations at the tip of each
bar in a barplot, similar to the graph below:
http://www.lakesuperiorstreams.org/understa
nce wrote:
> On Mon, Jun 1, 2009 at 7:50 PM, tsunhin wong wrote:
>> But I have some follow-up questions:
>> 1. In aov, why IVs (subject & condition) cannot be in number format?
>
> Put simply, because that's the only way to obtain the values you
> observe in the p
ll)
> aov.recall <- aov(recall~condition + Error(subject/condition),data=example)
> summary(aov.recall)
Error: subject
Df Sum Sq Mean Sq F value Pr(>F)
Residuals 9 942.53 104.73
Error: subject:condition
Df Sum Sq Mean Sq F valuePr(>F)
condition 2 52.267 26.1
Dear R users,
I have copied for following table from an article on "Using confidence
intervals in within-subject designs":
Subject 1sec 2sec 5sec
1 10 13 13 12.00
2 6 8 8 7.33
3 11 14 14 13.00
4 22 23 25 23.33
5 16 18 20 18.00
6 15 17 17 16.33
7 1 1 4 2.00
8 12 15 17 14.67
9 9 12 12 11.00
10 8 9
t; with(rle(test), max(lengths[values==0]))
[1] 7
Many thanks!
- John
On Sat, May 23, 2009 at 1:54 PM, Gabor Grothendieck
wrote:
> !!
>
> On Sat, May 23, 2009 at 1:52 PM, tsunhin wong wrote:
>> Thanks!
>> I tested it using:
>> test<-c(1,1,1,1,1,0,0,0,0,0,0,0,1
max(lengths[!!values]))
>
>
> On Sat, May 23, 2009 at 1:09 PM, tsunhin wong wrote:
>> Dear R Users,
>>
>> I am trying to write a script to count the longest consecutive
>> occurring 1 in a sequence:
>> test<-c(1,1,1,1,1,1,1,0,0,0,0,1,1,0,1,0,1,0,1
Dear R Users,
I am trying to write a script to count the longest consecutive
occurring 1 in a sequence:
test<-c(1,1,1,1,1,1,1,0,0,0,0,1,1,0,1,0,1,0,1,1)
In the case of the object "test", 1 occurs 7 consecutive times which
is the longest consecutive within the sequence.
I know I can always do a th
Dear all,
I found the answer:
intersect()
- John
On Thu, May 21, 2009 at 7:32 PM, tsunhin wong wrote:
> Dear Jim,
> Thanks for your suggestion.
>
> I have a follow-up question for fellow R Users that have followed this thread:
>
> *I used to create two lists by some very fl
Dear R Users,
I have some dynamic selection rules that I want to pass around for my functions:
>rules <- paste(g$TrialList==1 & g$Session==2)
>myfunction <- function(rules) {
> index <- which(rules)
> anotherFunction(index)
> }
However, I can't find a way to pass around these selection rules
drop=FALSE] # gives you a subset matrix of just the rows you
> are interested in.
>
> On Thu, May 21, 2009 at 10:10 AM, tsunhin wong wrote:
>>
>> Dear R Users,
>>
>> I have created a 1500 x 2 data frame - DataSeq. Each of the 1500
>> rows represents a data
Dear R Users,
I have created a 1500 x 2 data frame - DataSeq. Each of the 1500
rows represents a data sequence.
I have another data frame iData that stores the information of these
1500 data sequences in the same order, for example, condition, gender,
etc.
If I use "subset" to select certain
Dear R users,
I have been using a dynamic data extraction from raw files strategy at
the moment, but it takes a long long time.
In order to save time, I am planning to generate a data set of size
1500 x 2 with each data point a 9-digit decimal number, in order
to save my time.
I know R is limi
Dear R users,
I have 1 data.frame of 1500x80 - data1. I found out that there are a
few cells of data that I have misplace, and I need to fix the ordering
of them.
In an attempt trying to swap column 22 & 23 of the Subject with
misplaced data, I did the following:
> data2 <- data1
> subset(data1,(S
Hello all,
Probably my concepts about the data.frame and matrix and array in R
are not clear, I need some clarification to help me understand them
better.
>M <- read.table("test1.csv",sep=",",row.names=NULL,header=T)
gives me: M as
M1 M2 M3 M4 M5 M6 M7 M8 M9 M10
1 9 11 14 15 18 20 20 20 20
Also,each data.frame of the 1500 working as data sources floating in
the global environment is of a size ranging from 2000x36 to 9000x36
Please help...! THANKS!!!
- John
On Mon, Dec 15, 2008 at 1:12 PM, tsunhin wong wrote:
> Dear R Users,
>
> I was running some data analysis script
Dear R Users,
I was running some data analysis scripts and ran into this error:
Error: cannot allocate vector of size 27.6 Mb
Doing a "memory.size(max=TRUE)" will give me:
[1] 1506.812
The current situation is:
I'm working on a Windows Vista 32bit laptop with 4GB RAM (effectively
3GB I assume..
Dear all R users,
I am going to use R to process some of my physiological data about eye.
The problem is the recording machine does not sample in a reliably
constant rate: the time intervals between data sampled can vary from
9msec to ~120msec, while most around in the 15-30msec range.
The below
I found I have to use font=1, and I found it works when I set:
par(mfcol=c(45,8))
par(mar=c(0,0.5,1,0.5))
instead of
par(mfcol=c(45,8))
par(mai=c(0,0,0,0))
On Wed, Dec 10, 2008 at 9:22 AM, tsunhin wong <[EMAIL PROTECTED]> wrote:
> What if cex=0.001 with font=1 will still have the title
>> x <- seq(0, 10)
>>
>> pdf(width=8, height=20)
>> par(mfrow=c(45, 8), mai=c(0,0.1,0.1,0))
>>
>> sapply(1:(45*8), function(ii) {
>>plot(x, rnorm(x))
>>title(paste("test", ii), cex.main=0.5)
>> }) -> b.qu
Dear R users,
I'm trying to plot 45x8 graphs on the same pdf / device for the sake
of visual comparison.
par(mfcol=c(45,8))
par(mai=c(0,0,0,0))
In ?title, I can see there are cex and font settings: I set cex = 0.01
and font = 1: it is still very large, and then I tried setting font <
1, e.g. font
t; 019data$var1
>> plot(var1 ~ var2, data = 019data)
>> lm(var1 ~ ., data = 019data)
> etc. etc.
>
> HTH,
> antonio.
>
> 2008/12/9 tsunhin wong <[EMAIL PROTECTED]>:
>> I did really want to find make the suggestion work... it is going to
>> save my t
ement of the list). This list will
> not take up about the same amount of memory as if you read each file into a
> dataframe in the global environment. And there is no transforming of data
> frames (into 1 row or otherwise).
>
> --
> Gregory (Greg) L. Snow Ph.D.
> Statistic
gt; dataframe in the global environment. And there is no transforming of data
> frames (into 1 row or otherwise).
>
> --
> Gregory (Greg) L. Snow Ph.D.
> Statistical Data Center
> Intermountain Healthcare
> [EMAIL PROTECTED]
> 801.408.8111
>
>
>> -Original M
ta Center
> Intermountain Healthcare
> [EMAIL PROTECTED]
> 801.408.8111
>
>
>> -Original Message-
>> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
>> project.org] On Behalf Of tsunhin wong
>> Sent: Monday, December 08, 2008 8:45 AM
>> To: Jim Holtman
John
On Mon, Dec 8, 2008 at 10:40 AM, Jim Holtman <[EMAIL PROTECTED]> wrote:
> ?get
>
>
> Sent from my iPhone
>
> On Dec 8, 2008, at 7:11, "tsunhin wong" <[EMAIL PROTECTED]> wrote:
>
>> Dear all,
>>
>> I'm a newbie in R.
>> I ha
Dear all,
I'm a newbie in R.
I have a 45x2x2x8 design.
A dataframe stores the metadata of trials. And each trial has its own
data file: I used "read.table" to import every trial into R as a
dataframe (variable).
Now I dynamically ask R to retrieve trials that fit certain selection
criteria, so I
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