Posts by Filipe • 163 points
11 posts
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3
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answer33
viewsQ: Some error bars do not appear on "sciplot" graph
There is a problem when I am making a averages chart in R using the "sciplot" package. For starters, this is the code for a part of my dataset: dados <- structure(list(Dias = structure(c(1L, 1L,…
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answer66
viewsQ: Standard error bars do not appear in R graph
I have a question in the R, and I believe I’m missing some very simple detail. In short, I would like to understand the effect of photosynthesis on a given species over the days, considering the…
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answers28
viewsQ: Minimum number of thrifty models in model-averaging (Hurdle Model)
When we performed a multi-model analysis of the Hurdle Model, with the "pscl" package of the R, what would be the minimum number of parsimonious models? In my analysis, I got 2 models; that would be…
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answer49
viewsQ: Complete Separation in Hurdle Model
In a Hurdle Model analysis, how can one work with one of the variables of the model that presents complete (or almost complete) separation in the binomial model?
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answer320
viewsQ: Notice: "In sqrt(diag(Object$vcov)): Nans produced" in Hurdle Model
Hello! I have a data set, with which I intend to perform a test to analyze the influence of some predictive variables on a response variable; as there are many zeros in my response variable (there…
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answer97
viewsQ: Determine circle size in GGPLOT2 chart caption
Hello! I put these commands in the R: library(ggplot2) lm_smooth <- geom_smooth(method = lm, size = 1) qplot(percwhite, percbelowpoverty, data = midwest, weight = popdensity, size = popdensity) +…
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answers32
viewsQ: "Error in Optim" using Hurdle Model
I have a data set, where the response variable of my study has many zeros; therefore, I decided to understand the influence of predictive variables using a "Hurdle model". Look at my code: fórmula…
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answer1024
viewsQ: How to compare two columns of a spreadsheet, and keep the information that is equal?
Hello! I am working with a spreadsheet in Excel that has this structure: Coluna_A Coluna_B A A B B C C C_1 E D E F What I want is to find a way to assemble a third column, which has data present in…
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answers39
viewsQ: How to do an automated search on the Web of Science using R?
So I own several search strings with which I wish to search Web of Science (those search strings are organized in an Excel spreadsheet, where each line corresponds to a search string); my goal is to…
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answers2546
viewsQ: How to view comments on Rstudio console?
When I write a comment (preceded by the "#" symbol) in a Rstudio script, and press the 'Control+Enter' command, my comment is not displayed on the console screen. Someone would know me how to make…
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answers43
viewsQ: Transform phylogenetic tree into phyDat in R
Does anyone know how to transform a phylogenetic tree, which is in the form 'txt' to 'phyDat', in R?