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Questions related to R
Is there a way to flip the skull? I need the skull to be faced in the opposite direction. I am using this code string (in r-studio): plotRefToTarget(PCAf$shapes$shapes.comp1$min, mshf). mshf is...
22 June 2021 3,315 4 View
Hello, everyone, thank you for clicking this post. So, I want to analyze the effect of Corporal Punishment Myth on Corporal Punishment behavior (measure by CTS-PC). However, I want to know if the...
17 June 2021 3,741 3 View
Currently, I'm trying to learn the zero-inflated count model. So, I read about the model in the "pscl" package of R. It said that: "The formula can be used to specify both components of the model:...
11 June 2021 1,874 3 View
I am unable to install dmetar package of R. Any suggestions how can I download it.
09 June 2021 7,822 7 View
I'm using a cox proportional hazards regression to analyze latency data, i.e. time until behavior x occurs. The model I'm running is fitted with the "coxme" package in R (which is a wrapper to the...
08 June 2021 7,890 8 View
Hi, I'm analysing my survey data to test whether A affects B using the ordinal logistic regression model in R ("polr" function). In my case, both A (the explanatory variable) and B (the response...
31 May 2021 2,394 5 View
Dear all, We are preparing an explorative pupillometry analysis of previously elicited eye tracking data (Tobii T1750). Since we have no experience with pupillometry, we would be very grateful for...
26 May 2021 3,316 4 View
Hello, I am going to conduct confirmatory factor analysis for two f my validation studies. 1. One is a single factor questionnaire having 10 items. 2. The other one has 15 first-order factors...
24 May 2021 9,590 13 View
I am looking to identify the inflection point in a clear threshold relationship between the site-level density of two trout species that occupy similar niches. It appears to me that a...
23 May 2021 8,466 6 View
I have questions regarding measurement invariance for longitudinal data when analyzing latent variables. I would like to analyze 4 cohorts (grades 3,4,5,6 at baseline) longitudinally over 2 years...
12 May 2021 1,726 15 View
Hello, Background: I am doing a meta-analysis using Cohen's d. I am calculating the effect size of having a higher BMI on social cognition abilities. Some studies have a high BMI group and a...
04 May 2021 7,518 6 View
Can we carry out proportion test as usual and use t-values instead of Z value. For example in a college for two classes the smoking incidence data is Class A - 6/18; Class B - 7/22. Instead of...
01 May 2021 141 7 View
Hello, I designed a choice experiment of 3 attribute + payment attribute, with support.CEs package. The choice set have 2 improvement alternative (alt.1 and alt.2) + 1 alternative status quo...
23 April 2021 4,256 7 View
I am using the vglm function in R to compute the effect of my independent variable on my dependent variables (ranging from 0 to 5 or -2 to 2). I also receive outputs for my calculations. However,...
23 April 2021 8,689 7 View
For how long period, the cattle remains infective after getting the Pink Eye and when can the animal be safely return to the herd?
23 February 2021 4,407 2 View
I have the following equation, Eating choice (Yes/No)~ Box type (A/B/C). So the question is whether a certain box type affects eating choice in groups of dogs. The eating choice of each member in...
11 February 2021 6,410 9 View
I am running mixed models analyses because I have participants nested in groups. Across the different analyses, I have very different degrees of freedom in the lme output with nlme package (and...
10 February 2021 7,161 3 View
I have been working on a study trying to estimate body mass in mammals using a skeletal proxy in R. My dataset has high phylogenetic signal (Pagel's Lambda = 0.9) and I am interested in removing...
27 January 2021 7,326 3 View
I am currently studying the effect of one of the mutation in the receptor protein. One of the mutation involves substitution of one AA and also addition of 2 AAs (KTVN -> KTVKEA). Would there...
27 January 2021 9,031 6 View
Hi, I have raw data from [HG-U133_Plus_2] Affymetrix Human Genome U133 Plus 2.0 Array that I want to process using the Expresso function for Affymetrix microarrays. My samples include tumor...
23 January 2021 1,845 3 View
Hello there, I am using the robumeta package in R to fit a meta - regression model. One of my categorical moderators has three levels. Everything is dummy coded. AFAIK regression coefficients...
07 January 2021 8,352 3 View
Hi, I am looking for the source code of HSPF model, but i found out that the source code in repositories of HSPF (e.g., https://github.com/rburghol/hspf and https://water.usgs.gov/software/HSPF/)...
02 January 2021 1,533 3 View
Hello! I'm kind of new in using R for doing EFA, CFA, and SEM. I just followed a guide to perform CFA on my data to see how my context fits the ITC-SOPI model in a VR photo-based tour. I used...
24 December 2020 2,133 2 View
I am curious about some details of work of logical operators in R. For example, let we have following expression: A == a & B == b & C == c & D == d &.... and so on. If A == a gives FALSE, will...
20 December 2020 7,662 7 View