Format scientific notation in R [duplicate]

Question

I have a number which show as

a <- 1.34467773e-5. 

I want to format it to

a <- 1.34e-5. 

How can I do it?

Thanks.

Dialect

options(digits=3) – Pusillanimity

options() change the global options which might not be good for every situation, for example, I only want the p-values to be displayed in the scientific notation and other numbers in the default way. – Meetly

Answer 1

formatC(a, format = "e", digits = 2)

Esra

It's unclear in the question if the desired output is numeric or character, this is the latter. G5W's comment is the former. – Cleavland

Answer 2

You could also use the function sprintf. For example:

sprintf("%.1e", 0.00008765)

Coloring