Displaying 20 results from an estimated 10000 matches similar to: "plot focus"
2007 May 31
4
Aggregate to find majority level of a factor
I want to use the aggregate function to summarize data by a factor (my
field plots), but I want the summary to be the majority level of another
factor.
For example, given the dataframe:
Plot1 big
Plot1 big
Plot1 small
Plot2 big
Plot2 small
Plot2 small
Plot3 small
Plot3 small
Plot3 small
My desired result would be:
Plot1 big
Plot2 small
Plot3 small
I
2005 Dec 26
4
lme X lmer results
Hi,
this is not a new doubt, but is a doubt that I cant find a good response.
Look this output:
> m.lme <- lme(Yvar~Xvar,random=~1|Plot1/Plot2/Plot3)
> anova(m.lme)
numDF denDF F-value p-value
(Intercept) 1 860 210.2457 <.0001
Xvar 1 2 1.2352 0.3821
> summary(m.lme)
Linear mixed-effects model fit by REML
Data: NULL
AIC BIC
2008 Jan 25
4
Function for translation of a list into a matrix as used by ordination?
Hello.
Does anyone know of an existing function that takes a list in the form of:
Plot1 Species1 Abundance1
Plot1 Species2 Abundance2
Plot2 Species1 Abundance1
Plot2 Species3 Abundance3
.
.
.
PlotN SpeciesN AbundanceN
and translates into a matrix in the form of
Species1 Species2.... SpeciesN
Plot1 Abundance1 Abundance2... AbundanceN
Plot2 Abundance1
2004 Feb 20
1
unexpected postscript output with par(mfg)
Hi, a colleague of mine encountered some unexpected behavior regarding
the postscript output from R. It's difficult for me to tell whether
or not this is an R problem or a ghostview/gv/interpreter problem.
Just to note, I think it's exactly the same situation reported here:
http://finzi.psych.upenn.edu/R/Rhelp02/archive/25436.html
The following code produces a working plot (no
2008 Nov 24
3
multiple plots in R
Hi, I just try to draw multiple plots in one page using R, I used par
command. For example I have 7 plots, but instead of arranging them in
the default way
plot1 plot2 plot3
plot4 plot5 plot6
plot7
I want them in this order
plot1 plot2 plot3
plot4 plot5 plot6
plot7
Could somebody tell me how to do this, please? Thanks so many.
Suyan
2012 Dec 13
3
Repeat elements of matrix based on vector counts
I have two dataframes (df) that share a column header ("plot.id"). In the
1st df, "plot.id" records are repeated a variable number of times based on
the number of trees monitored within each plot. The 2nd df only has a
single record for each "plot.id", and contains a variable named "load" that
is collected at the plot-level and is only listed once per plot
2010 Aug 20
3
if-else function
Hi R people!
I am looking for some suggestions writing an if-else function.
The idea is to characterize different plots containing counts of
variables (here parasites). If a plot has a count equal or higher than
4 for any parasite the function should return a 1 else a 0. Later I
can loop the function over all plots.
Here I have a little subset of my data:
VariablePAR Plot1
2010 Jul 29
2
how to 'stack' data frames?
I have 2 data frames (A & B) with some common column names.
A has 10 rows.
B has 20 rows.
How do I combine them so I end up with a data frame with 30 rows that only
contains the common columns.
I was trying 'merge' (Merge two data frames by common columns .....etc. )
but that is not giving me what I expect...
> a <- iris
> b <- iris
>
> c <-merge(a,b)
>
2004 Sep 09
2
Skipping panels in Lattice
Dear all,
I wish to generate a lattice boxplot which skips an empty cell in a design.
I have trawled r-help, scruitinized xyplot(lattice) help page, and merrily
reproduced examples of using skip from a couple of previous r-help queries
and the example given in Pinheiro & Bates. But I must be missing something...
Here's an example (running R 1.9.1 on Win2k):
# generate some data
df1
2006 Mar 19
2
tick mark intervals
Hi everyone!
This must be a common question but I have not found an answer to it in the
archives yet.
I am producing four plots with par(mfrow=c(2,2)). The x-axis is the same for
all of them but the y-axis is different.
What I would like to do is to have a different range of the y-axis and
different intervals between tick marks. BUT
I would like to have the same number of tick marks and I would
2009 Apr 14
2
subset dataframe by rows using character vector?
Dear List,
I'm stuck on what seems like a simple indexing problem, I'd be very grateful to anyone willing to help me out.
I queried a dataframe which returns a character vector called "plot". I have another dataframe from which I want to subset or select only those rows that match "plot". I've tried subset, and also the "which" command.
plot
2007 Nov 23
1
R 2.6 and library(survival)
Hi all,
I have installed in R 2.6 the survival package and I am trying to analyze some
data and present plots. The problem occurs when I try to plot lines on
the same plot. E.g. take simulated data for time (t), event (e) and groups
(group1 and group2) and do:
### this is how I create the plots
plot1<-survfit(Surv(t,e)~ as.factor(group1))
plot2<-survfit(Surv(t,e)~ as.factor(group2))
2012 May 10
6
averaging two tables (rows with columns)
Hi R user,I am struggling to figure out on how I can calculate the average from the two tables in R. Any one can help me? really your help would be grateful- I am spending so much time to figure it out. It should not be so hard, I think.
I have very big data but I have created a hypothetical data for simplification.
for example
I have : table 1
table 1: species occurance data
2007 Dec 11
2
ggplot - Setting the y-scale in a bar plot
Dear All (probably Hadley),
I am now trying to customise some plots using a bar geom.
I do not want to use the default binning statistic, but rather
calculate the bar heigths separately. I do manage this, but for
comparison purposes I would like to have a set of plots all with the
same y-axis height. But I do not seem to find out how to fix the
scale of the y-axis in this case.
Any tips?
2011 Mar 08
4
beamer overlays with Sweave?
This may be asking too much, but I'm wondering if anyone has a
solution (even a hack) for creating multiple (overlay) plots in an
Sweave file and post-processing the overlays in beamer appropriately.
For example, suppose I have a series of figure blocks in my .Rnw file:
<<plot1,fig=TRUE>>=
[stuff]
@
<<plot2,fig=TRUE>>=
[stuff]
@
<<plot3,fig=TRUE>>=
2007 Mar 07
5
How to open more windows to make more graphs at once!
Dear R users,
I have a data frame (test) including five columns of upper (numeric), lower (numeric), observed (numeric), best_sim (numeric) and stname (factor with 80 levels, each level with different length). Now I would like to write a short program to draw one graph as follow for each level of stname but I would like also to draw each time 12 graphs for the 12 levels of stname in the same
2011 Jul 19
5
multiple plots in single frame: 2 upper, 1 lower
Hi,
par(mfrow = c(2,2))
will create a 2x2 window that I can use to plot 4 diferent figures in:
[plot1 plot2]
[plot3 plot4]
But how can do 3 so that the bottom spans the width of the upper two:
[plot1 plot1]
[p l o t 3]
Is this possible in R?
--
View this message in context: http://r.789695.n4.nabble.com/multiple-plots-in-single-frame-2-upper-1-lower-tp3679574p3679574.html
Sent from the R
2004 Jul 29
1
Lattice graphics: adding lines to a plot
I am trying to use the Lattice package to produce the same result as I
can with the base graphics.
With base graphics I can type:
x <- 1:100
y <- x+rnorm(length(x))
g <- lm( y ~ x )
model.y <- g$coef[1]+g$coef[2]*x
plot(x,y) # a plot of the data
lines( x, model.y ) # a plot of the model, superimposed on the first plot
With Lattice graphics I've got this far:
2006 Dec 18
1
Replay recorded plot with new layout
Folks,
Please help with a graphics problem, I am running R2.4.0 on Windows XP.
In much earlier version of R (1.3? about December 2001)
I could
par(mfrow=c(1,1))
plot(1,1,xlab="X",ylab="Y")
plot1<-recordPlot()
plot(2,2,xlab="X2",ylab="Y2")
plot2<-recordPlot()
par(mfrow=c(2,1))
plot1
plot2
and produce the same effect as the following
2009 Oct 12
1
field index given name.
Hi,
How do I access the index number of a field given I only know the field
name?
eg - I want to set the probability of the field 'species' higher than the
other fields to use in sampling.
> colprob <- array(dim=NCOL(iris))
> for(i in 1:NCOL(iris)){colprob[i]=0.5}
> colprob[iris$species] = 1 #this doesn't work
> colprob
[1] 0.5 0.5 0.5 0.5 0.5
--
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