I wrote up this essay awhile back:
http://www.jsoftware.com/jwiki/JoeBogner/Joins
I and others also use R so feel free to post the R example you are looking
to compare to J
On Dec 7, 2014 9:57 PM, "Ryan" wrote:
> I appreciate how helpful this forum has been so far so I'd thought I'd
> ask anothe
structures.
group by functionality can often be accomplished with key /.
From: Ryan
To: Programming forum
Sent: Sunday, December 7, 2014 9:57 PM
Subject: [Jprogramming] J and data analysis/relational algebra
I appreciate how helpful this forum has been so far
It really depends on your data and queries. You could either do these
directly in J or using the Jd database (which has a fast csv reader and
SQL-like queries).
Could you give us some simple examples?
On Sun, Dec 7, 2014 at 6:57 PM, Ryan wrote:
> I appreciate how helpful this forum has been so
I appreciate how helpful this forum has been so far so I'd thought I'd
ask another question.
Essentially, can someone point me to how J users perform the basic
data manipulation operations that you can do, for example, using R's
dplyr or SQL queries?
Specifically, I want to be able to (mainly o
