I am very new to R and I have a problem with the diagnostics of my models...can anyone help me please?

i have run my model:

Modell_ia8<- glmer(vote~edu1 + age1+ female+eink1+scltrst+poltrst+links1 + links1:edu1 + rechts1 + rechts1:edu1+ (1|country), family = binomial(link="logit"),data=all)

then i came across the DHARMa package and did this:

simulationOutput1 <- simulateResiduals(fittedModel = Modell_ia8,n=100) plot(simulationOutput1)

which gives me this:

I guess the QQ Plot looks good but I do not understand the Residual plot at all.

1. why is it all black?
2. what do the read lines in the middle and at 0 and 1 mean?

thank you so much in advance!

Blerta

I am very new to R and I have a problem with the diagnostics of my models...can anyone help me please?

I have run my model:

Modell_ia8 <- glmer(vote~edu1 + age1 + female + eink1 + scltrst + poltrst + links1 +
                    links1:edu1 + rechts1 + rechts1:edu1 + (1|country),
                    family = binomial(link = "logit"), data = all)

Then I came across the DHARMa package and did this:

simulationOutput1 <- simulateResiduals(fittedModel = Modell_ia8,n=100)
plot(simulationOutput1)

which gives me this:

I guess the QQ Plot looks good but I do not understand the residual plot at all:

1. Why is it all black?
2. What do the read lines in the middle and at 0 and 1 mean?