Using the following code:
using Distributions
dist = Normal()
plot(pdf.(dist,collect(-2.0:0.1:2.0)))
The plot returns as
The x-axis values are incorrect, is there a reason is it not centred at 0 as it should be?
Should be noted if I do something such as
plot(x->exp(x),collect(-2:0.1:2))
then it will return the correct plot.
You essentially have
plot(array)
In that case the xaxis is the index number into the array. You need something like plot(xarray, yarray), i.e.
x = collect(-2.0:0.1:2.0)
plot(x, pdf.(dist, x))
Alternatively you can plot a function in a range with Plots.jl via
pdf_eval(x) = pdf(dist, x)
plot(pdf_eval, -2, 2)
#equivalently
plot(x->pdf(dist,x), -2, 2)
Or, using the Distribution recipe implemented StatsPlots:
using StatsPlots, Distributions
plot(Normal())