Posts by Maria Lopes • 115 points
5 posts
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1
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answer103
viewsQ: averaging the 15 days before the day in common
Hello! I’m trying to find in the database (agua and meteo) the day of the month of agua in common with the meteo and when to find the meteo finds the same day (for the Alqueva-Montante station),…
rasked Maria Lopes 115 -
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votes4
answers129
viewsQ: Build database
I need to build a database with 200 rows and 4 columns (with the 4 variables I idealized). I devised a study to estimate the presence of snakes in a given city, I have no data. I thought that the…
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3
votes1
answer48
viewsQ: R code_with() function
What does this line of code mean? with(epilepsy,by(seizures/timeadj,list(treat,expind),mean)) the data is from the package faraway.
rasked Maria Lopes 115 -
1
votes1
answer60
viewsQ: GEE on R-someone can explain to me the SFV code
model0 <- glm(stable ~ Sex+Age+Height+Weight+Surface+Vision,binomial,ctsib) summary(model) model1 <- glm(stable ~ Sex+Age+Height+Weight+Surface+Vision+factor(Subject),binomial,ctsib)…
rasked Maria Lopes 115 -
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votes2
answers186
viewsQ: How can I transform a variable(0-10) into 3 categories?
The GLEASON variable in the database is 0 to 10. And I wanted to turn this variable into three categories, for example: 0-4: not aggressive, 5-7: aggressive intermediate and 8-10: very aggressive.…
rasked Maria Lopes 115