! Demo about plot theming.
! Author: Francois Tonneau

size 14 11

set font ss

! This plot is identical to the previous one, with the exception of theming.
! *The script won't compile unless the themes.gle library is present, either
! in the same directory or in GLE's custom-library directory, GLE_USRLIB.*

include themes.gle

amove 2 2
begin graph
    size 8 8
    fullsize
    xaxis min 4.15 max 8.25 dticks 1
    yaxis min 1.75 max 4.50 dticks 0.5

    ! The 'seaborn' theme is defined inside themes.gle.

    seaborn

    labels color black dist 0.3 hei 0.45

    xtitle "Sepal length (mm)" dist 0.5
    ytitle "Sepal width (mm)" dist 0.5

    data "seaborn.dat" d1=c1,c2 d2=c3,c4 d3=c5,c6

    d1 color seaborn_blue$   marker fcircle msize 0.23
    d2 color seaborn_orange$ marker fcircle msize 0.23
    d3 color seaborn_green$  marker fcircle msize 0.23

    let d4 = linfit d1 from 4.3 to 5.8
    let d6 = linfit d3 from 4.9 to 7.9
    let d5 = linfit d2 from 4.9 to 7.0

    begin layer 300
        d4 color seaborn_blue$   line lwidth 0.04
        d5 color seaborn_orange$ line lwidth 0.04
        d6 color seaborn_green$  line lwidth 0.04
    end layer
end graph

set hei 0.45
amove 10.50 8.80
write "Species:"

set hei 0.48 lwidth 0.05

begin key
    absolute 10.30 6.55 nobox llen 0.5
    line lwidth 0.04 color seaborn_blue$ marker fcircle msize 0.23 &
        text "{\it setosa}"
    line lwidth 0.04 color seaborn_orange$ marker fcircle msize 0.23 &
        text "{\it versicolor}"
    line lwidth 0.04 color seaborn_green$ marker fcircle msize 0.23 &
        text "{\it virginica}"
end key

! Done. We have learned about plot theming in GLE.