How to reverse axis values when using plotly?
You are probably looking for layout(xaxis = list(autorange = “reversed”).
axis
gnuplot: how to use a*(10^b) format on axis
All format specifiers that gnuplot has to offer can be found here. If you don’t like the 2e+07 format you could try setting the format with set format x “%.0s*10^{%T}” which gives you a format like 15*10^6.