Displaying 20 results from an estimated 5000 matches similar to: "Combining math and variables in expression"
2008 Feb 21
1
linebreaks in mathplot
Dear HelpeRs,
I would like to do sg similar to:
plot(c(0,100), c(0,100), xaxs="i", yaxs="i", type="n")
txt <- paste("a =", a, "%\n b =", b, " km2", sep="")
text(95, 95, txt, adj=c(1,1))
just with the "km2" formatted with 2 in a superscript.
I thought
txt <- substitute("a = "*a*" %\n b
2010 Aug 01
3
Constructing arguments for plotmath
Colleagues,
I am encountering difficulty adding formatted text to a graphic. Specifically, I want to add a superscript in the middle of a text string but I would like to format the text string on the fly. The commands:
plot(1,1)
ARG <- bquote('TEXT'^'\u00ae')
mtext(ARG, line=-2, side=1)
yield the desired output.
However, my goal is to paste together a string, then pass
2010 Oct 12
1
Displaying a variable as an expression into a plot label, but the variable has brackets
I'm attempting to insert variables as expressions into labels for my plots,
but I'm running into the issue that characters in my labels aren't allowed
in expressions, notably '[' and ']'. An input string of "[^3H]5-CT" needs to
be displayed as [3H]5-CT with the 3 as superscript. But brackets aren't
particularly liked in expressions. I know I can do
2013 Apr 03
3
Superscript
Hi,
How do I write a superscript within gsub?
I have the following: gsub("_mgkg",expression(paste("mg kg"^{-1})),names[1])
Thanks
--
Shane
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2010 Dec 27
1
another superscript problem
I've exceeded the maximum time I am willing to accept for solving simple
problems so I thank all in advance for your assistance.
I am trying to plot text combined with an object value and a superscript.
obv = 5
text = "Population mean ="
ss = ^o # degrees
Something like this (very naive so you get the idea):
expression(text, obv, ss)
paste(text, obv) # works ...but of course I
2009 Nov 02
2
superscript troubles
I know that this has been revisited over and over, yet I cannot figure out
how to solve this case of superscript troubles...
I would like the 2 in r2 to be superscript, yet I am pasting text before and
after it. I have tried several variations but have not solved this yet, any
suggestions?
legend (bty =
2010 Oct 22
2
superscript characters in title with '+'
Hi,
How can I get the '2+' into superscript in the following title:
'[Ca2+]i onsets'
I tried the command below, but it doesn't work. What am I missing?
hist(X, main=expression(([Ca*]i^2+) 'onsets'), xlab = 'sec')
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2006 Jul 31
2
math symbols and text with mtext()
Dear R users,
Two questions:
1) Is there a way to simplify the mtext() line below ?
beta=c(1,-1)
m=5
plot(1)
mtext( bquote(paste( beta == .(paste( "(", paste(beta, collapse=", "), ")" )) )), outer=TRUE,line=-3)
2) How do I get the embedded carriage return "\n" below to work, i.e for the text that follows it to appear on the next line?
beta=c(1,-1)
m=5
2009 Jul 27
6
Superscripts and rounding
I am new to the world of R/programming so this may be a really easy question.
I thank you for your patience and help in advance
I would like the characters km^2 to be displayed on the plot subtitle as km
squared - two as a superscript.
I would also like to have the numbers from the data set for longitude and
latitude to be rounded to four decimal places.
Thank you.
plot (
2011 Feb 01
2
superscript
Hi there,
How can I superscript the "2" of "r2 =..." in the legend below?
legend(210, 110, paste("r2 = ",
format(summary(regression)$adj.r.squared,digits=3), sep=""))
I usually use "expression(paste(...", but it won't work this time because
"format(summary(..." needs to be evaluated.
Thanks in advance!
--
View this message in
2010 Sep 22
1
legend
Hi,
there is a function to plot survival curves:
library(survival)
plot.KM <- function(survival, x, x_cut.off, main='', label='')
{
plot(survfit(survival ~ I(x >= x_cut.off)), main=main)
legend('bottomleft', c(expression(label >= x_cut.off),expression(label <
x_cut.off)))
}
Now, I need to determine as the argument what appears in the legend. I want
2009 Sep 02
2
combining grid.text, expression and variables
Dear R-users,
I am trying to use the grid.text and expression functions to display
several character strings and plotmath text on a viewport. Some strings
can include a variable portion (PI.limits in the following example),
which I thought could be implemented by combining the bquote and the
expression functions. Unfortunately, my expressions do not seem to be
evaluated. I would greatly
2006 Dec 22
2
Math expression with object to evaluate
Hello.
I have a question that probably has a simple answer.
I have a loop where several figures are plotted with each iteration. I calculate some descriptives to put in the title of the figure. When I use expression, since I want to combine math plotting symbols and the descriptives I calculate, I get an error. Here is an example of the code that I tried:
plot(x,y,
2008 Jan 27
1
titles with superscript and variale value
Hi everyone,
I am trying to write a title for a plot which has a superscript like D^2 and a value of a variable stored in that variable..... i am not sure if i am clear so i will try an example:
Suppose i want my title to be like: Family: Gaussian; D^2 = 0.45
where i have the value 0.45 stored in variable d2 (which comes from some previous calculations, and depending which actual variables
2009 May 18
2
Superscripts and subscripts in trellis graphics
I'd like to annotate an xyplot with an R^2 value, but can not find the
syntax to define the superscript format for the text.
I'd appreciate suggestions,
xyplot(SharkSloughEggs.df$Sharkeggs.rel +
SharkSloughEggs.df$SharkHatched.rel + SharkSloughEggs.df$SharkFlooded.rel +
HSI.shark$MEAN ~ Year,
pch=c(1,9,5,4), lty=c(1,6,3,4), lwd = c(2), col = c("black",
2012 Feb 20
1
how to print km square in the form of km2
Hello,
This is Elaine.
I am drawing a plot with x-axis label with "km square" as the unit.
Now I want to print km square in the form of km2 and output "2" as the
uppercase.
Please kindly help suggest command to show the uppercase.
Thank you.
Elaine
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2011 Feb 20
3
Partial italic in graph titles when looping
Dear all,
I have a rather complicated problem. I am trying to loop through making graphs,
so that the graph-making process is fully automated. For each graph, I'd like to
make sure the corresponding title is formatted properly. The titles will be a
combination of a gene name and numerical position within the gene. The gene name
should be italic-bold, whereas the gene position should be
2017 Dec 04
2
ggtern and bquote...
>>>>> peter dalgaard <pdalgd at gmail.com>
>>>>> on Mon, 4 Dec 2017 14:55:19 +0100 writes:
>> On 4 Dec 2017, at 11:58 , Levent TERLEMEZ via R-help
>> <r-help at r-project.org> wrote:
>>
>> Dear Users,
>>
>> What is the proper way to write symbol, superscript,
>> subscript in
2009 Oct 19
1
How do I wrap a long mixed text/math expression in an axis label?
I would like to wrap a y-axis label onto two lines. My label is an expression
containing both text and math symbols. I have looked at plotmath,
strsplit(), strwrap(), deparse(), do.call(), substitute() and bquote().
Based on previous posts, I can get plain text to wrap. However, when I try
these methods on my label, the exact string is returned, rather than
evaluating the math symbols.
My
2008 Apr 02
1
Trouble combining plotmath, bquote, expressions
I'm using R-2.6.2 on Fedora Linux 9.
I've been experimenting with plotmath.
I wish it were easier to combine expressions in plotmath with values
from the R program itself. There are two parameters in the following
example, the mean "mymean" and standard deviation "mystd". I am able
to use bquote to write elements into the graph title like
mu = mymean
and R will