You can use heatmap’s yflip argument:
using Plots
N = 100
Mod = zeros(N,N)
for i = 1:2N
i <= N ? (Mod[i,i÷2+1]=1) : (Mod[2N-i+1,i÷2]=1)
display(heatmap(Mod,legend=false, yflip=true))
end

You can use heatmap’s yflip argument:
using Plots
N = 100
Mod = zeros(N,N)
for i = 1:2N
i <= N ? (Mod[i,i÷2+1]=1) : (Mod[2N-i+1,i÷2]=1)
display(heatmap(Mod,legend=false, yflip=true))
end
