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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 5,930 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 9,716 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 3,557 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 2,937 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 900 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 2,731 3 View
Running a Co-correspondence analysis (ter Braak, C. J. F., and A. P. Schaffers. 2004. Co-correspondence analysis: a new ordination method to relate two community compositions. Ecology 85:834–846.)...
25 January 2017 9,289 1 View
The manual explains how to input environmental variables ~(or factors) and interactions between them but does not explicity explain how to input geographical coordinates. Should I just input...
21 January 2017 5,433 1 View
Hi, I'm doing regression in prediction. But, i would like to get some advice on any package in R to do feature selection specifically using mutual information algorithm? Thank you in advance
16 January 2017 5,918 2 View
I have used a histogram as a density estimator and fitted a spline using R. My understanding is that the spline function gives a cubic spline interpolation, but I did not specify what method to...
16 January 2017 3,110 4 View
I explored different packages (such as mgcv, MCMCglmm, glmmADMB, etc) but they all have limitations. Either they don't allow for zero-inflated, zero-altered distributions or they don't allow...
15 January 2017 1,654 2 View
I want to model VARMA-GARCH of Mcaleer to study volatility transmission between oil and stock market index (bivariate). Is there any available programme in R or Eviews that I could use?
10 January 2017 7,875 3 View
Hi, I have performed a CFA in R using the lavaan package. I used a robust estimator (MLR) because there was a lack of normality in the data. With a sample of 282 and 5 factors to conduct I have a...
08 January 2017 568 5 View
Hello, I would like to check multigroup hypothesis with the help of R Studio/STATA/Mplus Softwares but I would like to read some documents that used a multigroup analysis
06 January 2017 6,711 2 View
I have sampled 6 populations of lizards for which I have presented each lizard with 4 odour treatments. I want to know if lizards flick their tongue less when presented with a control (no odor)...
04 January 2017 484 14 View
All Dears, Happy New Year. I am looking to find a function in R which predict some interpolated / extrapolated numbers among a series of numbers. I have some censuses for 4 months of several...
04 January 2017 701 7 View
There is a huge number of missing data in my study. and the data are all MNAR (Missing not at random), with little MCAR test (p
30 December 2016 5,840 4 View
I tested the effect of pH on the delta 13C isotope change (beginning-end of experiment) in two species. When I do a two-way ANOVA (two factors: pH and species, both with 2 levels), I get a...
14 December 2016 6,063 8 View
Dear all friends I am using naiveBayes function of R for my modeling. I need to categorize my input data into two classifications. Now I am segmenting them by myself, and is not so scientific...
08 December 2016 2,246 4 View
DE analysis was carried out using cufflinks, TAIR10 database, Arabidopsis
07 December 2016 1,581 5 View
Hi together, I'd like to conduct a mixed-design ANCOVA in R with two covariates. I used the afex package to run the ANCOVA: BU_PK_trust_ancova = aov_ez("id", "trust_rating", data2_long, within=...
05 December 2016 7,878 2 View
I have monthly precipitation data for a rain gauge for 30 years and by means of which, firstly I need to carry out gamma distribution model in R studio software and then change the gamma...
02 December 2016 8,252 2 View
Hi, I am analyzing proportions of volatile compounds in floral scent, by using metaMDS function in r (vegan) but the analysis does not converge. I have tried to increase the number of tries with...
22 November 2016 3,252 3 View
Dear all, I would like to pick your brains for the following problem. I want to combine data on an exposure (thyroid function or TSH) and outcomes from 5 studies. In each study, the outcome is...
22 November 2016 4,529 6 View