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I used STRUCTURE to look at the relationship between 28 localities representing 572 individuals, followed by CLUMPP and DISTRUCT for windows. My problem, however, is that I cannot visualize the...
06 April 2017 5,032 3 View
I want to calculate the distance matrix of a phylogenetic tree which is stored in R as a class “large phylo”. This tree have 23197 tips. when I use cophenetic() to calculate the distance matrix, a...
05 April 2017 8,581 2 View
I'm looking for a equation of ARL of EWMA chart and to be easy calculate it by manually.
04 April 2017 9,745 2 View
I am trying moderating effects in a structural equation model, where the moderating variable is also a latent variable. I am using "R" as the software tool. Unfortunately, I could not create a...
02 April 2017 256 8 View
i have built two models based on same data. one model shows me negative AIC,another shows me positive. so i should always take the negative one? by the way, one is glmer(poisson), one is lmer....
27 March 2017 9,078 3 View
Say I have some data with observations of individuals with different treatment. I can test whether the treatments affect the observations with an ANOVA test. But now I want to find out whether the...
27 March 2017 5,069 2 View
Hi, I am trying to import an adjacency matrix (2927x2927) in Stata which I created in R based on a shp file. However, when I arrive to the step: "spmat import SPWMat using Sus_2017_FINAL_2.csv,...
24 March 2017 6,163 1 View
I think my question speaks for itself. It may, however, consist of three parts:1) Can we consider a likert scale as count data?Based on my search so far, I would say we can probably not consider...
23 March 2017 9,458 3 View
I have constructed several models in R and used a model selection process to select the most appropriate model based on AIC values. However, I am wanting to use AICc for model selection, not AIC....
20 March 2017 5,172 5 View
Hi! I'm performing a PCA in R Studio for behavioral data and I note in many tutorials a plot (for variables or individuals) which displays cos2, according to the tutorials, cos2 is "the quality of...
16 March 2017 6,902 4 View
I have successfully imputed missing data in my data set but I am struggling to follow VanGinkel & Kroonenberg's instructions for what to do next. Does anyone know is there an easy way to do...
13 March 2017 4,981 3 View
Thinking about online and MOOC-type certificates for R programming and data analysis, are there any that are recognized and respected by potential graduate schools and employers? I guess if people...
12 March 2017 8,276 3 View
Hello everyone, I have a 16S rRNA dataset of the gut microbiome of 11 humans, who were given two different dietary interventions. For beta diversity analysis I did ANOSIM of the Bray Curtis...
06 March 2017 8,996 2 View
I have a dataset of X axis =197 compounds, Y = 780 descriptors in excel?
02 March 2017 6,182 6 View
Are there any tools or R-codes for meta-analysis in ERGM (Exponential Random Graph Models )?
01 March 2017 5,064 1 View
I have 30 rasters layers which represent a value for 30 consecutive years. How to create a linear regression for each cell over the 30 layers and output the slope? I am assuming they represent...
24 February 2017 5,553 11 View
I see there is the lcmm (latent classes mixed models) package for R. What issues did you encounter?
23 February 2017 1,154 1 View
I would like to know (in a practical manner) how to calculate the bivariate (or cross) space-time K-function for clustering analysis between different types of events? Does anyone have a sample...
17 February 2017 7,214 2 View
Hello there, I would appreciate if you could provide some tips on how to use lsmeans to make interaction plots in R. Thanks alot
17 February 2017 6,016 11 View
I am doing the Repeat Measure ANOVA using a below mentioned model in R. But I am not understanding how to perform pair-wise multiple comparison. I have added one hypothetical data in the file...
12 February 2017 9,794 5 View
Hey Matlab users, if I have two series of data: a = [1 4 6 3 4 6 7 8]; b [34 56 34 56 79 23 48 28]; Then i can find the spearman and pearson correlation coefficient respectively as: [RHO,PVAL] =...
11 February 2017 3,648 10 View
I am trying to analyze GEO Data with Bioconductor R. I have imported the required packages and downloaded the dataset. But when i import simpleaffy using library function, I am getting the...
11 February 2017 2,997 0 View
Hi TS and R gurus, Is there any way to impliment Elliott–Rothenberg–Stock (ERS) with Hannan-Quinn lag selection criterion in R? Libraries like fUnitRoots and fSeries have commands...
08 February 2017 970 3 View
Dear Members of RG community, I try to calculate incremental variance explained by variables in multivariate multiple linear regression model, but I don't have Sum of squares parameters like...
04 February 2017 2,797 3 View