How do I increase the number of columns displayed in Jupyter with R?

Question

I am using a Jupyter notebook with an R kernel. When I print rectangular data, e.g., a matrix, it only shows me the first 10 and last 10 columns:

The same thing happens for data.frames, or any other object that is printed in an HTML table.

How do I change this setting?

Answer 1

Figured it out. You can set these in options():

options(repr.matrix.max.cols=50, repr.matrix.max.rows=100)

They default to cols=20 and rows=60.