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23 results for “from:Tonja Krueger”

local minima/ maxima
Tonja Krueger · Dec 4, 2011 · r-help

Contour line coordinates
Tonja Krueger · Sep 15, 2010 · r-help

Hi all, I used contour() to add contour lines to a plot. Now I?m wondering if there is a way to get an output of the calculated x- and y- coordinates of the contour lines? Tonja

Confidence intervals (Weibull, LogNormal, Gumbel)
Tonja Krueger · Aug 2, 2010 · r-help

Is there a way to calculate confidence intervals for other distributions than the GEV distribution (like Weibull, LogNormal, Gumbel). I used the maximum likelihood method to estimate the parameters. (For the GEV distribution I used the extReme package)

Fit Gumbel Distribution using Method of Moments
Tonja Krueger · Nov 20, 2012 · r-help

Hi all! I'm sure this is a stupid question but I can't find an answer. How can I fit the Gumbel distribution to my data using The Method of Moments in R? Thank you for helping me, Tonja

do calculation within expression(), text in plot
Tonja Krueger · Feb 28, 2014 · r-help

Dear Helpers, I would like to add some text to my plot, containing a variable and the calculated value for the variable. As I would like to produce many plots, I hope this can be done automatically. Unfortunately I can...

lmomRFA-package: regsimq()
Tonja Krueger · Aug 16, 2010 · r-help

Hi List! I?m using regsimq() from the ?lmomRFA?-package to calculate error bounds for diverse distributions. For example: regsimq(gumfit$qfunc, nrec = lmom.data$n, f = lcdfgum, boundprob = c(0.025, 0.975)) Several times I got this error...

"lmomRFA" package: error bounds/confidence intervals
Tonja Krueger · Jul 21, 2010 · r-help

Dear List I?m using the ?lmomRFA? package to fit different distributions to my data sample. To calculate the error bounds I used: regsimq(?) and sitequantbounds(?) So my questions are: Are error bounds and confidence intervals the same thing? And...

own function: computing time
tonja.krueger at web.de · Oct 10, 2012 · r-help

Hi all, I wrote a function that actually does what I want it to do, but it tends to be very slow for large amount of data. On my computer it takes 5.37 seconds for 16000 data points and...

ks.test() with 2 samples vs. 1 sample an distr. function
tonja.krueger at web.de · Nov 15, 2017 · r-help

Dear all, I have a question concerning the ks.test() function. I tryed to calculate the example given on the German wikipedia page. xi <- c(9.41,9.92,11.55,11.6,11.73,12,12.06,13.3...

QQ-plot – Axes
Tonja Krueger · Aug 2, 2010 · r-help

I would like to change the position of the major tick marks in my qq-plot? Right now the ticks are set at 5.5, 6.0, 6.5 and 7.0. I would like them to be at 5...

fit two-parameter lognormal distribution, l-moments
Tonja Krueger · Feb 14, 2011 · r-help

Dear R helpers, I would like to fit a two-parameter lognormal distribution to my data using l-moments. Is there a package that provides this feature? I used the ?lmom?-package to fit the three-parameter lognormal distribution to...

solve integrate(,..) varying limits of integration
Tonja Krueger · Sep 14, 2010 · r-help

Dear List, Is there a way to solve integrate(func.1,x, Inf) $value =0.05 by varying the lower limit of integration (x in the example above)? So far I got: r<- 0.730163 s<--2 func.1<- function...

intercept point coordinates
Tonja Krueger · Jan 17, 2011 · r-help

Hi List, Can someone help me to calculate the coordinates of the red and green points? In this example I found their approximate location by trying, but as I have to analyse many similar curves, I?d rather calculate the...

scatterplot3d(); customise axes
Tonja Krueger · Apr 13, 2012 · r-help

Hi all! I?m using scatterplot3d() to show the distribution of data for different locations. As I wound like to show distances between the locations and also label the locations, I was wondering whether there is a function similar to...

use gcheckbox in gWidgets to switch on/off gframe
tonja.krueger at web.de · Jan 16, 2016 · r-help

Dear All, I?m trying to create a GUI using gWidgets. I would like to have a checkbox to ?switch on/off? different frames within the GUI. Ideally if one frame is switched on, all other frames would be switched...

fitting sine wave
Tonja Krueger · Jul 27, 2011 · r-help

Dear R-helpers ? I have 7 data points that I want to fit a continuous curve to, that should look similar to a sine wave My data points would mark the local minima and maxima respectively. This is what I...

Peak Over Threshold values
Tonja Krueger · May 31, 2010 · r-help

Thanks a lot for your help. That?s the time period I was looking for. I?ve got one more question: for further analyses I need the respective maximum values within these time periods (between the green and red lines...

Accelerating the calculation of the moving average
Tonja Krueger · Mar 22, 2011 · r-help

Dear List, I have a data frame with approximately 500000 rows that looks like this: ?Date??? time??? value ? 19.07.1956????????? 12:00:00?????????????? 4.84 19.07.1956????????? 13:00:00?????????????? 4.85 19.07.1956????????? 14:00:00...

Peak Over Threshold values
Tonja Krueger · May 26, 2010 · r-help

Dear List I hope you can help me: I?ve got a dataframe (df) within which I am looking for Peak Over Threshold values as well as the length of the events. An event starts when walevel equals 5.8...

own function: computing time
Tonja Krueger · Oct 11, 2012 · r-help

That's perfect, thanks a lot! Tonja Gesendet: Mittwoch, 10. Oktober 2012 um 21:37 Uhr Von: "William Dunlap" <wdunlap at tibco.com> An: "tonja.krueger at web.de" <tonja.krueger at web.de>, "r-help at r-project.org...

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