Identical X , Y ticks

New to Julia
,
1

Hi
I am using AlgebraOfGraphics for data visualisation.

I have used below code to get xy scatter plot .

plt_idv = data(df) * mapping(:DV_ipred,:DV)
draw(plt_idv)
fg1 = draw(plt_idv,axis = (xticks = 0:1:6,yticks = 0:1:6,ylabel = "observations", xlabel = "individual predictions"))

it gave me a plot with xticks of 0,1,2,3,4 and y ticks of 0,1,2,3,4,5

How can i get same ticks on both x and y axis. (0,1,2,3,4,5,6)

and also can you please suggest how to get a identical diagonal line for x and y axis.

Hope i am clear.

Thank you

2 
fg1 = draw( plt_idv,
  axis = (
    aspect = 1,
    limits = (0,6,0,6),
    xticks = 0:1:6,
    yticks = 0:1:6,
    ylabel = "observations", 
    xlabel = "individual predictions"
  )
)

For the diagonal line and as complete MWE:

using AlgebraOfGraphics, GLMakie, DataFrames
df = DataFrame(:DV => [2,3,4,5],:DV_ipred => [2,2,3,5] )
plt_idv = data(df)
dfline = (; :DV => 0:6, :DV_ipred => 0:6)
layers = data(dfline) * visual(Lines) + plt_idv * visual(Scatter)
axis = (
    width = 250,
    height = 250,
    aspect = 1,
    limits = (0,6,0,6),
    xticks = 0:1:6,
    yticks = 0:1:6,
    ylabel = "observations", 
    xlabel = "individual predictions"
  )
fg1 = draw(layers * mapping(:DV_ipred, :DV) ; axis)

image

You can find the axis attributes e.g. for the Makie backend here: API

Putting the line and scatter into the same plot I utilized this example: Lines and markers ยท Algebra of Graphics