Re: [R] taking a small piece of large tiff

2017-04-05 Thread Louisa Reynolds via R-help
large'? > > Jim Holtman > Data Munger Guru > > What is the problem that you are trying to solve? > Tell me what you want to do, not how you want to do it. > > > On Tue, Apr 4, 2017 at 7:47 AM, Louisa Reynolds via R-help > wrote: >> Dear Forum >&g

[R] taking a small piece of large tiff

2017-04-04 Thread Louisa Reynolds via R-help
Dear Forum  I am trying to cut out a small section of a very large 2-dimensional grayscale image as a tiff in R, but it is having difficulty handling such large files.  I have looked at bigmemory and ff packages but it is unclear how I can use these packages with tiffs. Can anyone please suggest

Re: [R] Inverse Gaussian Distribution

2011-01-04 Thread Louisa
Dear David, It works! Thank you so much for your help! Louisa -- View this message in context: http://r.789695.n4.nabble.com/Inverse-Gaussian-Distribution-tp3172533p3174015.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r

Re: [R] Inverse Gaussian Distribution

2011-01-04 Thread Louisa
Thank you again David! I did not try it yet, cause neither the dataset nor R is on this computer. I'll try it in a few hours, as soon as possible, when I'm on my personal computer. I'll let you know if it works. I'm really curious! Thank you for your time! Best Wishes,

Re: [R] Inverse Gaussian Distribution

2011-01-04 Thread Louisa
able: > model <- glm(Y~ agecat+gender+area,...) My question is if i can run it as follows and still have a right solution : > data <-transform(data, area=(factor(area, levels=c("C", > "A","B","D","E","F") ) ) I'l

[R] Inverse Gaussian Distribution

2011-01-03 Thread Louisa
ment(n=6,base=3))) The variable 'area' goes from A to F (6 areas: A,B,C,D,E,F) How can i manipulate the data to set the baseline of area to C? R is producing errors when I'm trying to do so. I'll be very thankful for any help you can provide. Louisa -- View this message in

Re: [R] Gamma & Lognormal Model

2010-12-28 Thread Louisa
Thank you Michael! -- View this message in context: http://r.789695.n4.nabble.com/Gamma-Lognormal-Model-tp3165408p3166318.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/l

[R] Gamma & Lognormal Model

2010-12-27 Thread Louisa
ta(mammals) attach(mammals) Assignment: Fit the gamma model and lognormal model for the mammals data. I appreciate any help you can provide. Best Wishes, Louisa -- View this message in context: http://r.789695.n4.nabble.com/Gamma-Lognormal-Model-tp3165408p3165408.html Sent from the R he

[R] Power curve for a wilcoxon test

2008-04-14 Thread Louisa Hay
Hi, I am trying to write R code to produce a power curve to show how the power of a Wilcoxon-test varies depending on the mean, with data generated from a uniform distribution. Any ideas how I should go about this?Louisa _ Amazing

[R] Power curves

2008-04-14 Thread Louisa Hay
Hi, I am trying to create a power curve to show how the power of a t-test varies depending on the mean. Any ideas how I should go about this? Louisa _ [[alternative HTML version deleted

[R] Arrays and functions

2008-04-13 Thread Louisa Hay
Hi, I' am doing a stats project using R to work out the size of a t-test and wilcoxon test depending on the distribution and sample size. I just can't get it to work - I want to put my results from the function size() into an array.At the moment I keep getting the error message:Error in res[dis

[R] Arrays and functions

2008-04-13 Thread Louisa Hay
Hi, I' am doing a stats project using R to work out the size of a t-test and wilcoxon test depending on the distribution and sample size. I just can't get it to work - I want to put my results from the function size() into an array.At the moment I keep getting the error message:Error in res[dis

[R] FW:

2008-04-12 Thread Louisa Hay
Hi, I'm doing a stats project using R to work out the size of a t-test and wilcoxon test depending on the distribution and sample size. I just can't get it to work - I want to put my results from the function size() into an array.At the moment I keep getting the error message:Error in res[dist