Seems low but I'm not familiar with the for profit publication industry.
Wickham is one of the leads in providing data visualization/graphics for R. He authored ggplot2, one of the better plotting libraries available in R.
With data analysis/science trends of use in Python (especially with IPython/Jupyter/JupyterHub and an R kernel available) ggplot2 has some real competition now (poltly, matplotlib, etc.).
There's still heavy entrenchment in R due to the amount of useful libraries in CRAN and previous work but I predict much new work is and will continue migrating to Python as newer professionals enter the domain.
Wickham is one of the leads in providing data visualization/graphics for R. He authored ggplot2, one of the better plotting libraries available in R.
With data analysis/science trends of use in Python (especially with IPython/Jupyter/JupyterHub and an R kernel available) ggplot2 has some real competition now (poltly, matplotlib, etc.).
There's still heavy entrenchment in R due to the amount of useful libraries in CRAN and previous work but I predict much new work is and will continue migrating to Python as newer professionals enter the domain.