Displaying 20 results from an estimated 300 matches similar to: "Left Outer Join 2 DF's on Multiple Conditions"
2010 Jul 22
1
Updating a Data Frame
Hi,
I have a global data-frame in my R script.
At some point in my script, I want to update certain columns of this
data-frame by calling in an update function.
The function looks like this:
# get events data. This populates a global event data frame in the R-script
events <- getEvents(con, eventsFilePath)
# events has columns eventid, timeStamp, isSynchronized, timeDiff; with
millions of
2006 Jul 19
2
Mouse Location
Is the only way to get the mouse location by using javascript? Or does
rails do it for me?!? :)
Does anyone have a simple script that they use? I''m trying to put a div
right where the mouse is clicked on a link... so I''m looking for it to
work like this:
a hre f=. onclick=Element.setStyle(''title_login'', {left:
MOUSEX,top:
MOUSEY;});new
2010 Jul 20
1
Error using sqldf
Hi,
I am running a query using sqldf() [package : sqldf]. The query is:-
userid <- 5
taskid <- 5
tab1 <- fn$sqldf("SELECT tobiiEvents.data1, tobiiEvents.data2,
events.`timestamp` as tobiiTime
FROM tobiiEvents
INNER JOIN events ON events.eventid = tobiiEvents.eventid
WHERE tobiiEvents.subtype = 'MOUSE' AND tobiiEvents.userid = 5 AND
tobiiEvents.taskid = 5
ORDER BY
2010 Apr 24
2
table command
Hi,
Let s be a dataframe.
> s
A B C
0 0 1
1 0 1
1 0 1
0 0 1
1 0 1
0 1 1
0 1 1
0 1 1
0 0 1
> tab1=table(s[,c(1,2)])
> tab1
B
A 0 1
0 3 3
1 3 0
> tab2=table(s[,c(1,3)])
> tab2
C
A 1
0 6
1 3
The problem is I need to access frequency corresponding to (0,0).
tab1[1] will give me the correct value
2011 Oct 29
1
Refresh tab content on click in JQuery UI Tabs
HI Guy''s
TAB1 and TAB2 have some radio button, checkbox and dropdown menu. When
TAB1 is selected, I have to switch to TAB2 and then back to TAB1 to refresh
the loaded content.
How to make TAB1 refresh loaded content when click on its tab?
*code is something like that*
<ul class="tabs">
<li><a *href="#tab1"*>Gallery</a></li>
2006 Oct 27
3
How to best divide table by table
Hi all,
how can I divide two tables of the same dimension so that all names are
preserved, ie do not become NA? I have "tab1" and "tab2", each having
names in the first column. I want "tab3" with the same names and values
"tab1/tab2".
Thanks,
Serguei
2009 Dec 22
2
Nested For loops
Dear R experts,
Might be very simple question to ask but would be insightful. As the same story of nested "for loops". following is the code that I am using to get the autocorrelation function of the sample data. I have tried to get rid of for loops but since I am touching R after such a long time that I need to practice more but I need help to revive my skills. I know that apply() or
2008 Feb 13
2
apply on large arrays
I have a big contingency table, approximately of size 60*2*500*500,
and I need to count the number of cells containing a count of 1 for each
of the factors values defining the first dimension.
Here is my attempt:
tab1<-with(pisa1,table(CNT,GENDER,ISCOF,ISCOM))
tab2<-apply(tab1,1:4,function(x)ifelse(sum(x)==1,1,0))
tab3<-apply(tab2,1,sum)
Computing tab2 is very slow.
Is there a faster
2011 Oct 30
1
Normality tests on groups of rows in a data frame, grouped based on content in other columns
Dear R users,
I have a data frame in the form below, on which I would like to make normality tests on the values in the ExpressionLevel column.
> head(df)
ID Plant Tissue Gene ExpressionLevel
1 1 p1 t1 g1 366.53
2 2 p1 t1 g2 0.57
3 3 p1 t1 g3 11.81
4 4 p1 t2 g1 498.43
5 5 p1 t2 g2 2.14
6 6 p1 t2 g3 7.85
I
2011 Sep 08
1
ggplot2 freqpoly() layers..?
Hi,
I was trying to overlay/combine two freqpoly plots. The sample code below illustrates the problem. Essentially, I want to do is:
1. Have the same colour for all the lines in 'Plot 1' (and 'Plot 2').
Currently, all the lines in Plot 1 have different colours and all the
lines in Plot 2 have different colors. I'd like for all lines in Plot 1
to be 'red' and all
2010 Jun 10
1
do faster ANOVAS
Dear all R users,
I want to realize 800 000 ANOVAS and to store Sum of Squares of the effects. Here is an extract of my table data
Product attribute subject rep t1 t2 t3 … t101
P1 A1 S1 R1 1 0 0 … 1
I want to realize 1 ANOVA per timepoint and per attribute, there are 101 timepoints and 8 attributes so I want to realize 808 ANOVAS. This will be an ANOVA with two factors :
Here is one example:
2011 Sep 08
2
ggplot geom_freqpoly() layers ..?
Hi,
I was trying to overlay/combine two freqpoly plots. The sample code below
illustrates the problem. Essentially, I want to do is:
1. Have the same colour for all the lines in 'Plot 1' (and 'Plot 2').
Currently, all the lines in Plot 1 have different colours and all the lines
in Plot 2 have different colors. I'd like for all lines in Plot 1 to be
'red' and all the
2005 Jun 24
1
comparing strength of association instead of strength of evidence?
Hi,
I asked this question before, which was hidden in a bunch of
questions. I repharse it here and hope I can get some help this time:
I have 2 contingency tables which have the same group variable Y. I
want to compare the strength of association between X1/Y and X2/Y. I
am not sure if comparing p-values IS the way even though the
probability of seeing such "weird" observation under H0
2013 Apr 10
6
means in tables
Hi.
I have 2 tables, with same dimensions (8000 x 5). Something like:
tab1:
V1 V2 V3 V4 V5
14.23 1.71 2.43 15.6 127
13.20 1.78 2.14 11.2 100
13.16 2.36 2.67 18.6 101
14.37 1.95 2.50 16.8 113
13.24 2.59 2.87 21.0 118
tab2:
V1 V2 V3 V4 V5
1.23 1.1 2.3 1.6 17
1.20 1.8 2.4 1.2 10
1.16 2.6 2.7 1.6 11
1.37 1.5 2.0 1.8 13
1.24 2.9 2.7 2.0 18
I need generate a table of averages, the
2007 May 11
15
Simulating onmouseleave and onmouseenter with Prototype
Hello.
I spent an hour or three chasing down a desired effect that mootools
implements, namely the simulation of onmouseleave and onmouseenter
events.
Why?
Lets say you have a Menu. A ul element that contains many li elements.
If you want to have a function (maybe an effect) fire when the mouse
moves outside of the ul, you are out of luck. Observe the mouseout
function like so:
2011 Oct 06
1
Wilcox Test / Mann Whitney U Test
Hello List,
I'm trying to prepare some lecture notes on non parametric methods,
and I can't manually reproduce the results of the wilcox.test function
for ordinal data.
The data I'm using are from David Howell's website, available here
http://www.uvm.edu/~dhowell/StatPages/More_Stuff/OrdinalChisq/OrdinalChiSq.html
If I run the wilcox.test function on the data I get a p-value of
2009 Aug 06
1
calasification table under conditions
hi,
i have a file with 49000 lines i want to do a classification in two tables
suppose data <- read.csv2("c:/total.csv", sep=",")
if the second colonne contains ( A,B,C,D)------------> tab1
if the second colonne contains ( E,F,G,H)------------> tab2
How can do this ?
Thank you for your help
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2005 Oct 25
2
data.frame-question
Dear R-List,
I am very new to R and programming itself, so my question may be easy to
answer for you.
I tried a lot and read through the manuals, but I still have the
following problem:
I have 2 data-frames:
Number<-as.numeric (Number)
Name<-as.character (Name)
TAB1<-data.frame (Name,Number)
- it looks like this:-
Name Number
A 2
A 3
A 6
B 8
B 12
B 7
C 8
D 90
E 12
E 45
佲仸
2013 Jan 08
0
bagging SVM Ensemble
Dear Sir,
I got a problem with my program. I would like to classify my data using
bagging support vector machine ensemble. I split my data into training data
and test data. For a given data sets TR(X), K replicated training data sets
are first randomly generated by bootstrapping technique with replacement.
Next, Support Vector Mechine (SVM) is applied for each bootstrap data sets.
Finally, the
2011 Nov 26
1
data.table merge equivalent for all.x
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