How to realize the ruler drawing in R language
How to carry out R language drawing ruler implementation, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can gain something.
Use the basic drawing commands plot, rect, segments, and text to draw a ruler that is 10 centimeters long.
1. Define the basic unit
Xcm
