Displaying 20 results from an estimated 200 matches similar to: "merging/intersecting 2 data frames"
2013 Apr 12
5
how to change the date into an interval of date?
Hi,
I am not sure I understand your question correctly.
dat1<- read.table(text="
id??????????? responsed_at???????????????? number_of_connection????????????????? scores
1????????????????? 12-01-2010?????????????????????????????????? 1????????????????????????????????????????????? 2
1????????????????? 15-02-2010??????????????????????????????????
2013 May 07
4
how to calculate the mean in a period of time?
Hi,
Your question is still not clear.
May be this helps:
dat2<- read.table(text="
patient_id????? t???????? scores
1????????????????????? 0??????????????? 1.6
1????????????????????? 1??????????????? 2.6
1????????????????????? 2???????????????? 2.2
1????????????????????? 3???????????????? 1.8
2????????????????????? 0????????????????? 2.3
2?????????????????????? 2???????????????? 2.5
2010 Sep 07
2
Plotting longitudinal data
Hello,
Hope that someone could help me plotting longitudinal data below:
7213 3333330001 0.8300 13.05.09 1
1 3333330001 0.8700 09.02.05 NULL
4797 3333330001 0.7700 21.03.07 NULL
2399 3333330001 0.7800 12.04.06 NULL
2400 3333330002 NULL 27.03.06 NULL
7230 3333330002 0.8200 14.05.09 0
2 3333330002 0.8400 09.02.05 NULL
4798 3333330002 0.8700 20.03.07 0
4799 3333330003 0.9000 20.03.07 13
2401
2007 Feb 20
1
Reshape (pivot) question
Hi R-users,
I have a data set like this (first ten rows):
id patient_id date code class eala ID1564262 1562 6.4.2006 12:00 5555 1
NA ID1564262 1562 6.4.2006 12:00 5555 1 NA ID1564264 1365 14.2.2006 14:35
5555 1 50 ID1564265 1342 7.4.2006 14:30 2222 2 50 ID1564266 1648 7.4.200614:30
2222 2 50 ID1564267 1263 10.2.2006 15:45 2222 2 10 ID1564267 1263
10.2.200615:45
3333 3 10 ID1564269 5646
2010 Nov 02
2
multi-level cox ph with time-dependent covariates
Dear all,
I would like to know if it is possible to fit in R a Cox ph model with
time-dependent covariates and to account for hierarchical effects at
the same time. Additionally, I'd like also to know if it would be
possible to perform any feature selection on this model fit.
I have a data set that is composed by multiple marker measurements
(and hundreds of covariates) at different time
2006 Aug 17
1
How to sort child table on fields in the associated parent
For an Xray file system patients have folders and folders have studies.
That is:
patients folders studies
id id id
name patient_id folder_id
... label type
... ...
The list of studies with their associated folder and patient might look
like this:
name folder_label study_type
2007 Jun 26
1
A really simple data manipulation example
In response to those who asked for a better explanation of what the
Vilno software does, here's a simple example that gives some idea of
what it does.
LABRESULTS is a dataset with multiple rows per patient , with lab
sodium measurements. It has columns: PATIENT_ID, VISIT_NUM, and
SODIUM.
DEMO is a dataset with one row per patient, with demographic data.
It has columns: PATIENT_ID, GENDER.
2010 Jan 21
2
will_paginate ?
Does anyone have experience with will_paginate?
I''m trying to use it with acts_as_ferret.
routes.rb
...
map.search ''/search'', :controller => ''notes'', :action => ''search''
notes.rb
...
acts_as_ferret :fields => [ ''body'' ]
notes_controller.rb
...
def search
if params[ :query ]
@query = params[
2007 Sep 13
2
beginner's questions ... sorry
I have 316 files. Each file represents a patient's breathing track
(respiratory signal recorded for a variable number of cycles). All files
have the same are made up of a header followed by a variable number of
records.
Each record contains 7 comma separated fields.
The patient ID is recorder in the header which is stripped off when reading
the file into a R data.frame.
Since I need to keep
2005 Sep 27
1
Moaning dog...
Here's one for you phone people....
An elderly lady phoned her telephone company to report that her telephone
failed to ring when her friends called - and that on the few occasions when it
did ring, her pet dog always moaned right before the phone rang.
The telephone repairman proceeded to the scene, curious to see this psychic
dog or senile elderly lady. He climbed a nearby telephone pole,
2010 Oct 03
2
A problem about nomogram--thank you for you help
dear professor:
I am a doctor of urinary,and I am developing a nomogram of bladder tumor.Now I have a problem about this.
I have got the result like this through analysing the dataset "exp11.sav" through multinominal logistic regression by SPSS 17.0.(the Sig. is high,that is good ,it is just aexperimental data )
Parameter Estimates
Ya
B
Std. Error
Wald
df
Sig.
Exp(B)
95%
2006 Jul 13
5
how to get to the parent of a child object.
Hi, i have a problem with the following:
I have an application with patients <-->>consults
models are ok
in the view list_consults i do this:
for consult in @consults%>
<tr>
<td><%= consult.patient.name %></td>
<td><%= consult.reason %></td>
<td><%= consult.date %></td>
<td><%= link_to
2006 Oct 17
2
RODBC and NULL values
Dear All,
Writing sooner than I thought I'd need to.
I'm using R 2.4 on Mac OS X, with RODBC, PostgreSQL 8.1 and Actual's
ODBC driver. I have all my data in Filemaker 8.5, but it is
automatically exported into PostgreSQL for analysis as Filemaker's ODBC
and JDBC access is awful, slow and has a tendency to crash.
I have disability data where for each patient there is a survival
2006 Aug 31
5
Tables with Graphical Representations
Hi useRs -
I was wondering if anyone out there can tell me where to find R-code
to do mixes of tables and graphics. I am thinking of something
similar to this:
http://yost.com/information-design/powerpoint-corrupts/
or like the excel routines people are demonstrating:
http://infosthetics.com/archives/2006/08/excel_in_cell_graphing.html
My aim is to provide small graphics to illustrate
2006 Jun 13
7
model validation across multiple views
I have a rather complex object with a number of attributes. For a variety
of reasons, I would like one view to create the object with only a couple of
fields completed, then a second and third view to finish all the fields. I
would like the model to validate_presence_of all these fields, since
eventually I need them all there, and I would like each page to validate its
portion of the fields that
2013 May 22
0
calcul of the mean in a period of time
Hi,
I guess you meant this:
dat2<- read.table(text="
patient_id????? t???????? scores
1????????????????????? 0??????????????? 1.6
1????????????????????? 1??????????????? 2.6
1????????????????????? 2???????????????? 2.2
1????????????????????? 3???????????????? 1.8
2????????????????????? 0????????????????? 2.3
2?????????????????????? 2???????????????? 2.5
2?????????????????????
2007 Aug 01
3
OpenBSD and too many open files
I posted some questions a few months back and received lots of great
help in getting my dovecot/postfix/LDAP setup working. Initially, I
ran into the pipe failed too many open files error. I am running this
setup on OpenBSD/sparc64 4.1-stable and so I put dovecot in its own
class and upped the maxfiles setting for that class. This was back
with dovecot 1.0 and everything worked fine. I
2013 Jun 04
0
choose the lines2
HI,
You can do this:
dat1<- read.csv("dat7.csv",header=TRUE,stringsAsFactors=FALSE,sep="\t")
dat.bru<- dat1[!is.na(dat1$evnmt_brutal),]
fun2<- function(dat){?
????? lst1<- split(dat,dat$patient_id)
??? lst2<- lapply(lst1,function(x) x[cumsum(x$evnmt_brutal==0)>0,])
??? lst3<- lapply(lst2,function(x) x[!(all(x$evnmt_brutal==1)|all(x$evnmt_brutal==0)),])
2009 Sep 11
1
help with plotting
HI all,
raw_urine =
read.table("Z:\\bruce.9.3.09.sample.stability.analysis\\urine\\mz.spot.sam.dat.new",
header = TRUE )
pvalue =
read.table("Z:\\bruce.9.3.09.sample.stability.analysis\\urine\\all.urine.features.t.test.result",
header = TRUE )
library(compositions)
p = function(a,b){
y = pvalue[,a]
if(y<0.01){
index = which(y, arr.ind=TRUE)
day1 = raw_urine[index,3:7]
day2 =
2013 Jun 04
0
choose the lines2
Hi,
May be this helps:
dat1<- read.csv("dat7.csv",header=TRUE,stringsAsFactors=FALSE,sep="\t")
dat.bru<- dat1[!is.na(dat1$evnmt_brutal),]
fun2<- function(dat){??
????? lst1<- split(dat,dat$patient_id)
??? lst2<- lapply(lst1,function(x) x[cumsum(x$evnmt_brutal==0)>0,])
??? lst3<- lapply(lst2,function(x) x[!(all(x$evnmt_brutal==1)|all(x$evnmt_brutal==0)),])