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Questions related to R
For many years I have used Sidelook (http://www.appleco.ch/) to assess understorey structure. However, I am using Linux for a few years and do not intend to return to Windows. Thus, I would like...
04 April 2019 2,644 3 View
As we know, Mixed effects logistic regression is used to model binary outcome variables, in which the log odds of the outcomes are modeled as a linear combination of the predictor variables when...
04 April 2019 5,751 9 View
01 April 2019 5,845 3 View
Hi, For example: If I have 20 eligible studies (Both case-control studies and cross-sectional studies without any control group ) coming out of a systematic search. Can I do meta-analysis with 10...
27 March 2019 6,766 6 View
I tried to do relative survival analysis specifically poisson regression in relsurv package in R. And I want to include covariate x time interaction term since the hazard (or excess hazard) in my...
17 March 2019 6,204 3 View
I am a beginner in phylogenetics, so there may be some fundamental misconceptions I have, so please bear with me. I am working on a project to test which specific gene is the best at predicting...
11 March 2019 2,286 3 View
I'm looking to take an Arabidopsis RNA-Seq differentially expressed gene set and search it against other publicly available RNA-Seq (and possibly microarray) experiments to find the experiments...
05 March 2019 9,038 2 View
I was very interested in comparing a glmer models.what kind of approach is better for comparing these models?
03 March 2019 7,840 5 View
03 March 2019 4,476 7 View
Hi folks, I have a two level random effects model with two level-2 predictors, one level 1 - predictor and I want to estimate random intercepts, a random slope of the L1-predictor as well as a...
03 March 2019 293 9 View
Hi, I want to evaluate the calibration of a logistic regression model (binary outcome) in R. I don't know how to make a calibration plot of the predicited probabilities (x) against the observed...
03 March 2019 5,365 5 View
I am looking for suggestions on a textbook for R/Rstudio. - I know there are several available on Amazon and free on the web. - Do professionals have any suggestions on which R books are the best...
03 March 2019 1,178 3 View
when I use "mlogit" in R, after I add some interaction variable and run the model, why it said that: error in if(is.null(initial.value)||lnl
03 March 2019 1,507 4 View
03 March 2019 6,071 2 View
I've been killing myself over the following and would love to hear folks' thoughts. I have a dataset in which individuals (subID), each belonging to a particular group (group), repeatedly chose...
03 March 2019 3,425 9 View
Do you know any R packages that helps you run many level (>3) multilevel models? I have been using lme4 for a while. I might be wrong but I think you can only run up to three level models using lme4.
03 March 2019 2,442 6 View
03 March 2019 2,923 2 View
Hi, I would like to build a species accumulation curve using specaccum function in R vegan package. The entry table should be a classic community table species by sites. However, instead of sites,...
22 February 2019 3,479 10 View
R and DEM (pysical model )?
14 February 2019 10,100 3 View
Hello everyone, I am trying to use R to draw a volcanic plot after DEG analysis. In my case, I use samr for detect DEG. I have successfully used ggplot2 to draw it. However, I have trouble when I...
02 February 2019 8,783 4 View
Hello, I am looking for a function in R that works similar as the "Interpolate shape" function in ArcGIS. I know there is the "extract" function from the raster package, which can extract all...
02 February 2019 8,474 4 View
Hi!! I am running linear mixed models for my data using 'nest' as the random variable. Sometimes, depending of my response variable and model, I get a message from R telling me 'singular fit'....
02 February 2019 9,037 9 View
02 February 2019 2,810 10 View
Since 2013, the interest in multilayer networks has been growing quickly. Some studies proposed new algorithms to calculate modularity and detect modules in multilayer networks of different kinds,...
31 January 2019 3,527 2 View