Displaying 20 results from an estimated 9000 matches similar to: "Two-sided log axis"
2007 Nov 20
2
Logarithmic axis
Hi there,
I guess this must be a standard issue, but I'm starting to go crazy with it. I
simply want a plot with the x axis being logarithmic, having labels 1, 10,
100..., and ten unlabelled ticks between each of them - just as they
introduce logarithmic axis at school. I've played around a bit with log="x",
xlog=T (where exactly is the difference here?), xaxp, and xaxt
2009 Jun 18
1
lattice logaritmic scale (basis "e" ), rewriting labels using xscale.component
Hi there,
sorry for troubling everybody once again, I've got a problem rewriting
Sarkar's function for
rewriting the tick locations in a logaritmic way (s.
http://lmdvr.r-forge.r-project.org/code/Chapter08.R):
His example works for log 2 but I need log e (natural logarithm). My
problem is that if I replace
2 with "e" (using paste()), I get the error message that the location
2010 May 10
2
[Fwd: Re: Plotting log-axis with the exponential base to a plot with the default logarithm base 10]
Hello!
Thank you for answering!
What I am trying to do is to plot my raw values (biomass of different
species) on a logaritmic y-axis with the base of e. When I type "log="y"",
the axis transforms into a logaritmic axis with the base of 10.
Best regards,
Elisabeth
> Dear Elisabeth,
>
> I'm not sure if I have understood your question -- are you trying
> to
2010 May 09
1
Plotting log-axis with the exponential base to a plot wi
Hello Ted!
Thank you a lot for your reply!!!
I will try to explain again; what I want is a logarithmic scaled y-axis
with the base of e (not 10). And the values I would like to use in the
plot are the raw values (not transformed in any way). Do you still think
that the base of log does not matter in this case (wheather it is e or 10
as a base)?
Elisabeth
> On 09-May-10 18:10:27, Elisabeth
2008 Jun 18
1
Help with axis labels
Hi
I have patched together (from various sources) the following code to get
semi-logarithmic plot. Unfortunately, my labels come out also at
intermediate places between 10^2, 10^3, 10^4 etc. Since I put the code
together from various sources and do not understand fully how the code is
working, I have not been able to get rid of the labels like 10^1.69897,
10^2.69897 etc. I would appreciate if
2012 Apr 03
2
Looking for the name of a certain kind of quantile plot
Hi,
While playing with quantile-quantile plots, I wrote up some code which
plots something strangely different. Here's the pseudocode:
testhist <- hist(sample_data)
refhist <- hist(rnorm(n, mean=0,sd=1)) # for some large-ish n
cumtest <- cumsum(testhist)
cumref <- cumsum(refhist)
plot(cumref,cumtest)
This produces a straight line of slope 1 for a sample with the same
2006 Dec 15
1
xyplot: logarithmic y-axis
This should be simple but I am struggling. I like to easily switch in xyplot
between a linear or logarithmic y-axis by setting a logical flag logY to
False or True. This switch changes the scales argument of xyplot. I found
out that the original two-dimentional data (Conc vs Time in my case) are
converted to log10(Conc) if log=TRUE in scales, but it appears that
functions like panel.curve need to
2009 May 12
1
ROCR: auc and logarithm plot
Hi,
I am quite new to R and I have two questions regarding ROCR.
1. I have tried to understand how to extract area-under-curve value by looking at the ROCR document and googling. Still I am not sure if I am doing the right thing. Here is my code, is "auc1" the auc value?
"
pred1 <- prediction(resp1,label1)
perf1 <- performance(pred1,"tpr","fpr")
plot(
2010 May 09
3
Plotting log-axis with the exponential base to a plot with the default logarithm base 10
Hello!
I have a problem which I have tried to solve for several days now..
I have plottet a lineplot.CI in the library "sciplot", and I am trying to
plot it with a logaritmic y-axis (with exponential base).
The problem is that; when I type "log "y"", the axis transforms into the
logaritmic of base 10.
I wonder if someeone could tell me how to specify that I would
2006 Nov 02
3
Better y-axis labels, and x-axis scaling
Hello
I'm plotting some data using matplot with a logarithmic scale on the
y-axis. This is the call to matplot I'm using:
matplot(turns, distances, type = "l", log = "y", lty = "solid",
ylab = "", xlab = "Time steps", col = c("black"))
The values for the 'distances' vector are always between 0 and 1.
The
2006 Dec 13
1
Passing arguments to panels in trellis plots
Dear all,
I am trying to produce survfit plots in a trellis environment and I
would like the plots to be logarithmic.
I am trying this:
print(Ecdf(~time | size*type, groups=alg,data=B,subscripts=TRUE,
panel=function(x,groups,subscripts)
{
t <- survfit(Surv(time[subscripts],event[subscripts])~groups[subscripts],data=B)
2005 Sep 14
1
OFF-TOPIC audio fade curves
This is off topic but I'm sure many subscribed here may be able to help. I'm writing an audio player, which includes vorbis of course, for the broadcasting industry and I need to prematurely fade out songs before they have finished. I've tried a linear and a logarithmic fade but neither sound natural to me.
I was never good at logarithms in school and that was a long time ago.
Can
2007 Mar 08
2
Using logarithmic y-axis (density) in a histogram
Hi,
I am searching for a possibility to display a logarithimic y-axis in a histogram. With plot that's easy (e.g.
plot(1:10, log="y")
but for histograms this does not work the same way: I tried
hist(rnorm(1000), freq=FALSE, seq(-4, 4, .5), ylim=c(0.001, 0.5), log="y")
Which gives the expected histogram but also warnings for my log="y" command
2012 Dec 02
1
overlapping graphs in logarithmic y-axis
dear useRs,
i want to overlap graphs of two matrices in such a way that the y-axis of graph should be "logarithmic" against normal x-axis.
i am, unsuccessfully, trying the followings
>matplot(mata, log="mata",type = "l", col="red)>lines(mata, log="matb",type = "l", col="yellow")
could you please help me out on it??
thanks in
2008 Dec 10
2
How to Break Axis in Lattice Plot
Dear All,
I have searched the following problem in the R help achives, and there did
not seem to be solutio for it.
The problem is how to break the axis in the xyplot (lattice plot). I read
the posts using the package plotrix, buy it doesn't work with the xyplot,
which is lattice based.
A simple example is attached below:
xyplot(c(1:10,100)~c(1:10,100))
What I would like to do is
2009 Sep 21
2
logarithmic seq() ?
Hello,
in scilab /Matlab there are functions that can create linear sequences (like R's
seq()) as well as logarithmic sequences.
Is there a logarithmic aequivalent of seq()?
Or maybe this would be an idea for newer R-releases,
maybe a type-option with "linear" and "logarithmic" as
parameters....?!
Ciao,
Oliver
2008 Aug 29
1
nls() fails on a simple exponential fit, when lm() gets it right?
Dear R-help,
Here's a simple example of nonlinear curve fitting where nls seems to get
the answer wrong on a very simple exponential fit (my R version 2.7.2).
Look at this code below for a very basic curve fit using nls to fit to (a)
a logarithmic and (b) an exponential curve. I did the fits using
self-start functions and I compared the results with a more simple fit
using a straight lm()
2010 Aug 31
2
specify axis range
Dear all,
I want to make a plot where I can specify the range of y axis. I am using the interaction.plot command and because the values of y axis are from 2 to 500, I am using a logarithmic scale.
>interaction.plot(speclong$Date,speclong$time2,speclong$outcome,xaxt="n",type="l",pch=20,xlab="", log="y", ylab="Concentration
2004 Mar 25
1
How to add a top X-axis with a different logarithmic scale?
Hi,
I am trying to put on one plot two different logarithmic
scales, using the bottom and top X-axes.
Below there is an example of what I am trying to achieve,
using axTicks() -- and fails.
I already spent few hours on that, and cannot figure out from
?par and ?axTicks what I am doing wrong.
Example follows:
############################################################
#### Data
x <-
2012 Jun 22
2
Boxplot with Log10 and base-exponent axis
Dear all,
I would like to (i) produce boxplot graphs with axis in logarithm in base 10
and (ii) showing the values on the axis in 10^exponent format rather than
10E+exponent.
To illustrate with an example, I have some widely spread data that I chart
plot using boxplot() [figure on the left]; the log="y" option of boxplot()
I obtained the natural logarithm conversion of the data and