Re: [R] replace zero in a matrix using random numbers

Hi Bert and Rui, Thank you very much! I had thought for every condition of matrix ==0 , rnrom(n=1, 1, 0.1) will randomly generate a number with mean 1 and sd 0.1. Yuan From: Bert Gunter [mailto:bgunter.4...@gmail.com] Sent: Friday, January 8, 2021 2:49 PM To: Yuan Chun Ding Cc: r-help@r-pro

Re: [R] replace zero in a matrix using random numbers

?rnorm tells you that n, the first argument, is the number of observations/random numbers you wish to generate. You asked for 1. So you need to ask for the number of 0's, something like: > a <- matrix(rep(0:1, 3), nrow =3) > a [,1] [,2] [1,]01 [2,]10 [3,]01 > a[!a] <-

Re: [R] replace zero in a matrix using random numbers

Hello, Try to get the number of zero values before: i <- er.miRCounts == 0 n <- sum(i) er.miRCounts[i] <- rnorm(n,mean=1, sd=0.1) Also, there is no need for a end-of-instruction ';'. The semi-colon is the instruction separator, so if you put it at the end you will be separating the instructio

[R] replace zero in a matrix using random numbers

Hi R users, I am analyzing miRNA sequence data for a special network analysis, I need to replace zero values in a matrix as random numbers with mean of 1 and standard deviation of 0.1. er.miRCounts[er.miRCounts==0] <- rnorm(1,mean=1, sd=0.1); this code made all zero values as 1.13, not random

Re: [R] HW help

This list has a no-homework policy. ---JRG On 2021-01-08 09:43, zyra e madhe wrote: > Hello, > > I'm having difficulty doing the following exercise. > Can you please provide the code and some written explanation? > > Thank you in advance, > > Zyra > > > ___

[R] HW help

Hello, I'm having difficulty doing the following exercise. Can you please provide the code and some written explanation? Thank you in advance, Zyra __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listin

Re: [R] Secondary y axis in ggplot2: did not respond when change its y-axis value

Thank you Rui and Thierry for the suggestion, it helped me. thanks On Fri, Jan 8, 2021 at 6:58 AM Rui Barradas wrote: > Hello, > > What about the following? > First get the min and max of value by variable == "y1". > Then use that range to scale up "y2". > > rng <- tapply(daT1$value, daT1$varia

Re: [R] Secondary y axis in ggplot2: did not respond when change its y-axis value

Hello, What about the following? First get the min and max of value by variable == "y1". Then use that range to scale up "y2". rng <- tapply(daT1$value, daT1$variable, range)$y1 ggplot(data = daT1, aes(x = x, group = variable, color = variable)) + geom_line(data = subset(daT1, variable == "y1

Re: [R] non-standard reshape from long to wide

Hi dcast from reshape is close, however column order is different mydf <- dcast(df.long, sample~marker) (!is.na(mydf[,-1]))*1 g j k u x y [1,] 1 0 1 0 1 0 [2,] 0 1 0 1 1 1 [3,] 0 0 0 0 1 1 You just need to change 0 to NA and add rownames from mydf. Cheers Petr > -Original Message-