R programmer

Closed - This job posting has been filled and work has been completed.
Web, Mobile & Software Dev Scripts & Utilities Posted 2 years ago


Hours to be determined
More than 6 months

Expert Level

Start Date

October 20, 2013


I am looking for someone who can be available over the long-term to help write custom R functions and build customized graphs.

Most of the programming tasks should not take very long (from under 10-15 minutes, to maybe a few hours). However, it's important that you be able to complete the tasks quickly.

The ideal candidate would have:
* Experience with R packages like: ggplot, xtable, plyr, reshape, data.table
* Knowledge of LaTeX and how it integrates with R (bonus points if familiar with knitr)
* Some knowledge of basic statistics

I've attached a sample task. If you are hired, I will give this to you as a "test job" and pay $5 to complete it.

In the task, you are to write a function that rounds the digits of specific rows and adds parentheses to others. In the attached example, the vector "row_choice" specifies the number of digits that each row of "df_before" should be rounded to. Although there are 8 rows, "row_choice" has 4 elements since each element should round row 1a and 1b to the same number of digits (likewise for 2, 3, and 4). Every "b" row should, additionally, have surrounding parentheses.

Please also state if you have experience using Stack Overflow since using it will probably be a frequent part of your work. If you have a Stack Overflow name, please include that as well.

About the Client

(4.97) 25 reviews

United States
Cambridge 10:33 AM

44 Jobs Posted
71% Hire Rate, 1 Open Job

$1,760 Total Spent
40 Hires, 1 Active

$6.86/hr Avg Hourly Rate Paid
60 Hours

Member Since May 20, 2010