search for: jacqueline

...alysis. The data are: X Event Trial 100 8 8 75 8 8 50 6 8 25 4 8 10 2 8 0 0 8 I want to estimate the value of X that will give a 95% hit rate (Event/Trial) and the corresponding 95% CI. Anyone can offer some help? Thanks!! - Jacqueline

...rom s3d but i think this is mapping to the xy plane whereas i would like to map onto my fitted plane. Is there a package/function that can help me do this that I have missed? or does anyone have any suggestions / sample code to get me started in the right direction? Thanks very much for your help! Jacqueline #R-2.6 ## example 5 data(trees) s3d <- scatterplot3d(trees, type="h", highlight.3d=TRUE, angle=55, scale.y=0.7, pch=16, main="scatterplot3d - 5") # Now adding a regression plane to the "scatterplot3d" attach(trees) my.l...

I need help with replacing NaN with zero (the value '0') in my dataset. The reason is that I can't get it to graph because of the NaN in the dataset. I have tried: data[is.nan(data)] <- 0 that others have suggested in the help archives but this does nothing so I am not sure what I am doing wrong. Thanks in advance for your help. [[alternative HTML version deleted]]

Hi all I have a multiple datasets that look like this MM Freq 1 30 2 35 3 54 4 33 5 27 6 13 7 25 8 29 9 40 10 32 11 36 12 23 I am plotting this using barchart (there is probably something better but it gives me the results I want) and I would like the x-axis to have the names of the months instead of the month numbers. So I have

...oked at stability measures for clustering (particularly thos which interface with hclust), and if any are available already in R but i have just missed them? I realise there are problems with heirarchical clustering..and i may have to consider using a different method, thanks for your advice, Jacqueline Hall [[alternative HTML version deleted]]

...-t.min*60 DATE <- as.POSIXct(strptime(paste(day,t.min,t.sec),"%y%m%d %M%S")) Tail(DATE) The problem is that the last element (3600) returns a NA and I don't understand why. 600, 1200, 2400 no problem, only 3600. Any helpful advice is highly appreciated :) Cheers, Jacqueline [[alternative HTML version deleted]]

...would use a few for-loops to do that. e.g x1_c(1,3,5) x2_c(2,5,6) for (i in x1) { for (j in x2) { ... }} My problem is that I don't know how many vectors there are ahead of time, so I don't know how many for-loops I need. Any ideas how to implement this? - Jacqueline -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at s...

.... By the way I handle it now, I only hand over the term "A1" but not the data frame "A1". How can I solve this. Turning the vector into a list does not work and I am not sure if there's something I can do... Please help if you can! Many thanks in advance already. Jacqueline [[alternative HTML version deleted]]

Hello everyone, Does anyone know if I can do Breslow Day Test for the homogeneity of odds ratio in R? Thanks! - Jacqueline

...[1] 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 $centers [,1] 1 -0.1313333 2 -0.8400000 $withinss [1] 0.5035733 0.0000000 $size [1] 15 1 I don't understand why this is happening, and how do I choose between the two solutions. Also, how can I ensure consistent solution over times? Thanks a lot! - Jacqueline

...interest is the concentration that will give a 95% sensitivity of the test. I suppose the same problem would occur if a probit model is fitted to the data and assume all the samples are independent. Does anyone have any suggestions on how to analyze this kind of data? Thanks a lot in advance. - Jacqueline

Hi all, Does anyone know if there is an implementation of Brookmeyer & Crowley's confidence interval for the median survival time in R? Reference : Brookmeyer & Crowley, "A confidence interval for the median survival time" (1982) Biometircs Thanks in advance for your help, Jacqueline [[alternative HTML version deleted]]

Hi all I can't find what I am looking for so I am asking here. I have a dataset that looks something like this. Year season percent_below 2000 Winter 6.9179870 2000 Spring 1.6829436 2000 Summer 1.8463501 2000 Autumn 3.8184993 2001 Winter 2.8832806 2001 Spring 2.5870511 2001 Summer 0.0000000 2001 Autumn 4.7248240 2002 Winter

I have a data set that I have imported (not sure if that makes a difference) and I would like to calculate the sum of only specific columns. I have tried >colSums(dataset, by=list(dataset$col5), dims=1) and I get an error of unused arguments I have also tried >aggregate(dataset, by=list(dataset$col5), sum) and I get the error that sum is not meaningful for factors. I want to only calculate

Hi all I have a bit of a problem. I want to make a barplot of some data. My data is of a score that is separated by year and by a limit (above 3 and below 3 to calculate the score). Year Limit HSS 1999 ALT 0.675 1999 VFR 0.521 2000 ALT 0.264 2000 VFR 0.295 I would like to have a barplot with year on the x axis and HSS on the y axis and the two limits as two different colors to show the

Hello R users I have a dataset that has different types of records with different dates and times pertaining to each. I would like to have a bar graph of a count of the types(ie. The number of types) of recods by hour grouped by year. So the count of the types would be the y axis, the hour on the x axis and then grouped by year for easy comparison. I think that I have to use barchart however I

I am using barchart to make charts for some data with a lot more functions and labels and such in the command. barchart(Freq ~ factor(HH), data = dataset1, group= year) So I have my data grouped by year and I get a legend at the top of graph, which is great cause I need the legend for the different years but it is a weird spot. So how can I manipulate the legend, ie. Move it, shrink it, do

...s mentioned in the Writing-R-extensions manual. I only would like to see how the method I think is used is actually implemented. I use R.2.13.1, Windows 7. The package I'm referring to is adehabitatLT, function acfang.ltraj -> res <- .C("acfangl",...) Many thanks in advance! Jacqueline [[alternative HTML version deleted]]

Hi everyone I need help with subseting a data set. In my dataset there is a specific row that will either have a value or be blank. I would like to subset (or split) the dataset into one dataset with the row that has the value and another dataset that has just the blanks. Now the thing is that the row that has the value in it, the value is not always the same, it is a time stamp of when

I would like to know how I can assign a name to a name. I have a dataset that has different years in it. I am writing scripts using R and I would like to give a month a generic name and then use the generic name to do different analysis. The reason for the generic name would be so that I only have to change one thing if I wanted to change the year. For example. Year1 = 1999 datayear <-