Displaying 20 results from an estimated 3000 matches similar to: "Recode of text variables"
2008 Jun 06
3
R loop
I all
I am just trying to get the idea of a loop if statement for another
purpose. I was going to label a new variable based on date ie first week
1, second week 2 etc. My code in bold is wrong but seems logical to me,
could someone help.
x <-
rep(c(2660156,2663703,2658165,2659303,2661531,2660914),c(2,2,2,2,1,1))
y <-
rep(c(6476767,6475013,6475487,6479659,6477004,6476388),c(2,2,2,2,1,1))
2011 May 03
2
Overlapping x axes using Lattice
Hi R users
I apologise in advance for this question as I suspect it is simple and
perhaps others have had this problem.
I am struggling to sort out how to fix the x axes so that the labels
don't overlap.
I have put the following example together to show my problem.
library(lattice)
titre <- as.factor(rep(c(10999,20999,30999,40999,50999,60999,
2008 May 06
3
Spatial join between two datasets using x and y co-ordinates
Hi R users
I am trying to create a spatial join between two datasets.
The first data set is large and contains descriptive data including x
and y co-ordinates.
The second dataset is small and has been selected spatially. The only
data contained within the second dataset is the x and y coordinates only
i.e. no descriptive data.
The aim of a join made between the two datasets is to select
2009 Mar 17
3
Combining columns from two dataframes
I all
I am trying to combine columns from two dataframes to make a completely
new dataframe consisting of one column of dates (ie a combination of
dates from the two dataframes).
>From the following dataframes
a b
1 2008-07-27 1
2 2008-10-01 2
3 2008-08-15 3
4 2008-08-14 4
5 2008-08-14 5
6 2008-09-20 6
c d
1 2008-07-27 1
2 2008-10-01 2
I would like to get:
z
2009 Apr 01
1
Adjusting font size in a lattice graph
Hi all
I have created a lattice graph but the text appears too big. Just
wondering if there was a way I could change the font size.
tp1.nDai=xyplot(value ~ yr | Name, data = nDai,type = 'o')
update(tp1.nDai, aspect = c(0.8), layout = c(4, 4))
I would appreciate your help.
Kind regards
andy
Andrew McFadden MVS BVSc
Incursion Investigator
Investigation & Diagnostic Centres -
2010 Feb 14
1
Adding a regression line to an xyplot
Hi R users
> I am trying to add a regression line to a graph for "c" for factor 2
> only. Any suggestions?
>
library(lattice)
a=(1:10)
b=c(1:5,16:20)
c=as.factor(c(rep(1,5),rep(2,5)))
d=data.frame(a,b,c)
xyplot(a~b, pch=c(6,8),data = tavg, groups=d$c,
reg.line=lm, smooth=FALSE, type=c("p","g"),xlab="a",ylab="b")
> I would
2011 May 17
1
Dealing with null values Aggregate function
Hi R users
I trying to some aggregate statistics on a very large dataset. The null
values are causing a problem. I would like to calculate aggregate values
for groups. I am just no sure how to deal with the "" I would ideally
like them to ignored ie if there is only 1 value over several columns
than that value would be the summary statistic.
I have put the following example together to
2009 Apr 14
2
Subset function: selecting variables within a factor
Hi all
I know this must be an easy one so sorry for the trouble. I would like
to select a list of variables within a factor
The following example is given in help for subset:
subset(airquality, Temp > 80 select = c(Ozone, Temp))
So how do I select all temperatures of 90 and 80 ie Temp = c(80,90)
I would appreciate your help.
Kind regards
andy
Andrew McFadden MVS BVSc
Incursion
2008 May 11
1
Finding unmatched data between two dataframe using several factors
Hi R users
I am trying to find unmatched data from two dataframes. I would like to
find unmatched data based on several factors. For the following data:
dat1 <- data.frame(x = paste("A", 1:6, sep=""),
y = c("andy","bob","ciaran","dan", "eion",
"fred"))
dat1
dat2
2008 May 13
1
Legend in scatterplot and adding regression lines
Hi R users
The scatterplot (used package R-Cmdr ) obtained has the legend off the
plot in the upper left
I would like to decide where to put the legend - is that option still
available and how do I do it?
code:
Dataset <- read.table("J:/Pigmatingsb.txt", header=TRUE, sep="\t",
na.strings="NA", dec=".", strip.white=TRUE)
2008 Mar 06
2
R code for selecting places spatially and by time
Hi all
The code of trying to write relates to selecting properties (given by x
and y co-ordinates) spatially (distance "X" from "infected" properties
identified by date) over a certain time period.
i.e. what properties are within 3 km from properties infected on
"2008-01-01" over the last 14 days.
Is any one able to give me some clues on how to write code to solve
2011 Nov 21
1
Lattice graph help
Hi all
I hope you might help me with some aspects of producing a graph in lattice. There are three things I have struggling with and that is: 1. to separate the horizontal box rows from each other; 2. to change the colour of the horizontal and vertical strips to white; and 3. to place the axes labels on the left y axes and on the bottom x axes. I would really appreciate some help. I have put the
2008 Apr 16
0
Instantaneous hazard of an event i.e. death
Hi all
I am trying to calculate the instantaneous hazard (rather than
cumulative hazard) for an event "bird death".
Some sample data is as follows:
year<-c(rep(2003,10),rep(2004,10))
time<-c(5,10,5,15,20,10,15,15,25,25,5,15,15,5,25,10,25,15,35,25)
event<-c(1,0,1,1,0,1,1,0,1,0,1,0,0,1,0,0,0,0,1,0)
Ideally I would like to know if the hazard is greater at specific time
periods
2008 Mar 12
4
Distances between two datasets of x and y co-ordinates
Hi all
I am trying to determine the distances between two datasets of x and y
points. The number of points in dataset One is very small i.e. perhaps
5-10. The number of points in dataset Two is likely to be very large
i.e. 20,000-30,000. My initial approach was to append the first dataset
to the second and then carry out the calculation:
dists <- as.matrix(dist(gis data from 2 * datasets))
2011 Nov 22
0
Lattice graph strips and axes
Hi all
I was wondering if it is possible to get rid of the horizontal strips and produce each barchart with a left y axes and lower x axes only. Also can you specify an exact size of graph ie 88mm wide with a font size of 'x'.
library(lattice)
library(latticeExtra)
n=as.factor(c(1:5,1:5))
2008 Nov 11
0
Producing a matrix of values
I all
I am trying to create a matrix for a network diagram:
# 1. The following produces two dataframes. The table "place" is a
dataframe of all places made from "tra" a tracing table that has the
source place and destination place. The table "details" is a dataframe
of all source and destination properties.
src=rep(c(1:3),each=5)
des=c(16:30)
rsk=rep(3,5)
2011 Mar 02
1
how to delete empty levels from lattice xyplot
Hello All,
I try to use the attached code to produce a cross over plot. There are 13
subjects, 7 of them in for/sal group, and 6 of them in sal/for group. But in
xyplot, all the subjects are listed in both subgraphs. Could anyone help me
figure out how to get rid of the empty levels?
Thanks
library(lattice)
pef1 <- c(310,310,370,410,250,380,330,370,310,380,290,260,90)
pef2 <-
2004 Jan 27
2
Probability for ANOVA
Hi all!
I have 4 treatments on 5 animals
Treat1 Treat2 Treat3 Treat4
Animal1 36 37 35 39
Animal2 33 34 36 37
Animal3 37 35 33 38
Animal4 34 36 34 35
Animal5 35 36 33 36
I use an Anova and i try to verify calcul
So i retrieve:
DF SS
2003 May 22
1
Experimental Design
I don't know if this is the best place to post this question but I will
try anyway. I have two experiements for which I use one-way
matched-randomized ANOVA for the analysis and I would like to compare
different treatments in the two experiments. The only common group in
the two experiments are the controls. Is there any ANOVA design that
allows me to make this comparison taking into
2011 Aug 09
1
simple plot question
Hi,
please excuse the most likely very trivial question, but I'm having no idea
where to find related information:
I try to recapitulate very simple plotting behavior of Excel within R but
have no clue how to get where I want.
I have tab delimited data like
cell treatment value
line a treat1 4
line a treat2 3
line b treat1 8
line b treat2 11
I'd like to have a plot (barplot), that