inst/examples/createDataHelp.R

In DHARMa: Residual Diagnostics for Hierarchical (Multi-Level / Mixed) Regression Models

testData = createData(sampleSize = 500, intercept = 2, fixedEffects = c(1), 
  overdispersion = 0, family = poisson(), quadraticFixedEffects = c(-3), 
  randomEffectVariance = 0)

par(mfrow = c(1,2))
plot(testData$Environment1, testData$observedResponse)
hist(testData$observedResponse)

# with zero-inflation

testData = createData(sampleSize = 500, intercept = 2, fixedEffects = c(1), 
  overdispersion = 0, family = poisson(), quadraticFixedEffects = c(-3), 
  randomEffectVariance = 0, pZeroInflation = 0.6)

par(mfrow = c(1,2))
plot(testData$Environment1, testData$observedResponse)
hist(testData$observedResponse)

# binomial with multiple trials

testData = createData(sampleSize = 40, intercept = 2, fixedEffects = c(1), 
                      overdispersion = 0, family = binomial(), quadraticFixedEffects = c(-3), 
                      randomEffectVariance = 0, binomialTrials = 20)

plot(observedResponse1 / observedResponse0 ~ Environment1, data = testData, ylab = "Proportion 1")


# spatial / temporal correlation

testData = createData(sampleSize = 100, family = poisson(), spatialAutocorrelation = 3, 
                      temporalAutocorrelation = 3)

plot(log(observedResponse) ~ time, data = testData)
plot(log(observedResponse) ~ x, data = testData)