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# Let's say you want to display a table of model coefficients
# in order of their significance,
# and you want to plot the distribution of model residuals,
# but you don't know how to access these values.
# Use str().
# Generate some random data
NN <- 1000
theData <- data.frame(Alpha = rnorm(NN),
Beta = rnorm(NN))
theData$Gamma <- theData$Alpha * 2 + theData$Beta / 2 + rnorm(NN)
# Model the random data
simpleModel <- lm(Gamma ~ Alpha + Beta, data = theData)
# Save the model summary
modelSummary <- summary(simpleModel)
is.list(modelSummary) # The model summary is a list
# which includes, among other things, a table of coefficients
# standard errors, etc.
# str() lets you investigate the structure of any R object:
# Here we see an item called "coefficients," which we can access with the "$."
# And here is our ordered table
modelSummary$coefficients[order(modelSummary$coefficients[, 3]), ]
# Likewise for the residuals. str() reveals an item called "residuals,"
# and we can easily plot their distribution.