Displaying 20 results from an estimated 9000 matches similar to: "Specifying Greek Character in Lattice Plot Label"
2011 Jun 28
1
Axes labels, greek letters and spaces
Hello all,
I can't seem to figure how to use a greek character in expression() in
plot() labels without adding a space. So for example below when plotting
this out
x<-1:10
plot(x,x^2, xlab=expression(Chlorophyll~italic(a)~mu~g~cm^-2))
the axis label read as μ g cm^-2 because I have space there with a tilda.
But if I remove the tilda then my units are mug cm^-2.
Can anyone recommend a
2011 Oct 21
2
Working With Variables Having Different Lengths
Because of regulatory requirement changes over several decades and weather
conditions preventing site access the variables in my data set have
different lengths. I'd like guidance on how to perform linear regressions
and other models with these variables.
For example, there are 2206 rows for the parameter "TDS" but only 1191
rows for the parameter "Cond." Such
2012 Dec 05
4
Changing data frame column headings
I have a reshaped data frame with value column headings concatenated from
two column headings in the melted data frame. I want to change all 56
headings in a single command, but 'names' allows me to change only one at a
time. In Hadley's 2007 article on reshape in the Journal of Statistical
Software he mentions a 'rename' function, but I cannot find that.
Is there a way to
2011 Oct 04
3
How to subset() from data frame using specific rows
I have a data frame called chemdata with this structure:
> str(chemdata)
'data.frame': 14886 obs. of 4 variables:
$ site : Factor w/ 148 levels "BC-0.5","BC-1",..: 104 145 126 115 114 128 124 2 3 3 ...
$ sampdate: Date, format: "1996-12-27" "1996-08-22" ...
$ param : Factor w/ 8 levels "As","Ca","Cl",..:
2012 Aug 07
3
reshape2's dcast() Adds NAs to Data Frame
I need to understand how and why dcast() adds NAs to a data frame that
contained no missing values.
The database table of chemical concentrations has all missing values
removed because they cannot contribute to data analyses. The structure of
the R data frame of these data have no NA values, and neither does the data
frame resulting from applying the reshape2 melt() function to it. However,
2012 May 17
3
New Eyes Needed to See Syntax Error
One of many scripts to produce 4 lattice plots on one page keeps throwing
an error. I've tried manipulating the file to eliminate the error, but have
not been able to do so. The error is:
> source('bicarb.R')
Error in source("bicarb.R") : bicarb.R:15:1: unexpected symbol
14: 15: hco33
^
The 'h' is in column 0 so the caret would be column -1, but it's
2011 Oct 11
1
singular gradient error in nls
I am trying to fit a nonlinear regression to infiltration data in order to
determine saturated hydraulic conductivity and matric pressure. The
original equation can be found in Bagarello et al. 2004 SSSAJ (green-ampt
equation for falling head including gravity). I am also VERY new to R and
to nonlinear regressions. I have searched the posts, but am still unable to
determine why my data come up
2013 Feb 22
4
Controlling Order of Panels in Lattice Trellis Plots
With multiple panels in a lattice trellis plot the sequence is, for
example, 1, 10, 11, 12, 2, 3, 4. I want the sequence to be 1, 2, 3, 4, 10,
11, 12.
Reading ?strip.default and the appropriate section in the Lattice book I'm
not seeing how to specify the 'human' numeric order rather than the computer
numeric order.
A pointer will be appreciated.
TIA,
Rich
2013 Feb 04
3
Modifying Package Data
The bio.infer package contains a data frame
/usr/lib/R/library/bio.infer/data/itis.ttable.rda that needs to be modified.
After loading the bio.infer package and attaching the data frame with the
data() function, I wrote the data frame to a text file.
After adding another row to the data frame I applied read.table() to
create a data frame, but it's in my pwd, not the R library data
2011 Sep 22
3
Bivariate Scatter Plots with Lattice
Data frame has this structure:
'data.frame': 11169 obs. of 4 variables:
$ stream : Factor w/ 37 levels "Burns","CIL",..: 1 1 1 1 1 1 1 1 1 1 ...
$ sampdate: Date, format: "1987-07-23" "1987-09-17" ...
$ param : Factor w/ 8 levels "As","Ca","Cl",..: 1 1 1 1 1 1 1 1 1 1 ...
$ quant : num 0.01 0.01 0.01 0.01
2012 Jul 18
2
cenbox(): Changing Default x-axis Group Labels
I've looked at the lattice book and the 'R Graphics Cookbook' without
seeing how to change the labels along the x axis for groups in a box plot,
specifically cenbox().
The attached example has a main and axes labels with default group labels.
Please point me to a reference on how I can change 'FALSE' and 'TRUE' to
something more easily understood by viewers.
TIA,
2008 Feb 22
1
How to Include greek symbol in axis label?
Hi, I'm fairly new to R, so hopefully this is an easy question...
On a plot, I would like to have the y label read: "Response(phi)" with phi = the greek character. From old posts I've found this:
title(ylab=expression(paste("Response (", phi, ")")))
This displays nicely, but in the default font. I would like to use font=6 (which is the font of the other
2009 Jun 05
1
Mixed Latin, Greek and subscript characters in axis label
Dear R-helpers,
I have been trying to figure out how to plot a graph with an axis label
consisting of a mixture of Latin, Greek and subscript characters.
Specifically, I need to write A[beta]{1-42}, where A is Latin script A,
[beta] is Greek lower case beta and {1-42} is subscript '1-42'.
I can use xlab=expression(beta[1-42]) and obtain the [beta]{1-42} part of
the label. But, I can't
2005 Apr 07
2
newline in lattice axis label
Hi,
I have a 3 panel xyplot with different variables in the y axis. I'm trying
to insert a newline after "Width (cm)," in the ylab argument as in the
example below. My goal is to have the y axis label broken into two lines,
split after the string just mentioned.
plotfun <- function() {
fakedf <- data.frame(A = sample(1:100, 50),
B = rnorm(50),
2012 Sep 06
2
Lattice bwplot(): Changing Orientation of Plots in Multipanel Display
I've looked again at Deepayan Sakar's 'Lattice' book and not seeing the
information I know must be in there. A clue stick would be much appreciated.
A pair of box-and-whisker plots for two conditions of the same data set
display each box plot horizontally (see attached pH figure). Relations of
the two are not as easily seen as they would be if the two panels had the
plots
2018 Mar 14
1
Fwd: Learning advanced R
Hi Albrecht,
I am forwarding your reply to the full group.
It's been a while since I did this and I don't remember the details. Maybe
someone else can comment. (I am a bit busy at the moment.)
If no one supplies the information in a few days I will try to take a look.
In the meantime you can start your reading on-line. :-)
Regards,
Eric
Dear Eric,
I downloaded the material from
2012 Jul 03
2
NADA Data Frame Format: Wide or Long?
I have water chemistry data with censored values (i.e., those less than
reporting levels) in a data frame with a narrow (i.e., database table)
format. The structure is:
$ site : Factor w/ 64 levels "D-1","D-2","D-3",..: 1 1 1 1 1 1 1 1 ...
$ sampdate: Date, format: "2007-12-12" "2007-12-12" ...
$ preeq0 : logi TRUE TRUE TRUE TRUE TRUE
2011 Aug 25
1
Combining a greek letter and a newline on the same label
Hi,
I would like to add a two-lines label consisting of:
"Delta word1\n
word2"
(with Delta being the actual greek letter).
However, when I try "expression(paste(Delta,"word1\nword2"))", I obtain the
following display:
"word1\n
Delta word2".
Do you have any idea on how to obtain the desired display?
Thank you for your help!
Sebastien
[[alternative HTML
2010 Sep 10
1
Greek letter included in a character vector
Hello,
In the past I have used "expression" to include greek letters in axis labels,
but this time I need to include the greek letter as part of a legend. Basically,
I need to create the following vector to rename the levels of a factor:
c("Interferon-gamma", "IL-10", "IL-5"), where "gamma" obviously needs to be
printed as the greek letter
2013 Jan 18
3
longitudinal study
Hello R user,
I have a data set from a longitudinal study ( sample below) where
subjects are followed over time. Second column (status) contains info
about if subject is dead or still in the study and third column is
time measured in the week. Here is what I need: if status is not dead
or unknown take the last week, if status is dead or unknown I need to
have corresponding week.
Desired resulst: