a b
1 1 a
2 2 b
3 3 c
4 4 d
Table
0.1 Introduction
Instance of: arrangement of information or data
AKA: Dataframe
Distinct from:
English: A collection of rows and columns, where rows represent specific instances (AKA records, k-tuple, n-tuple, or a vector), and columns represent features (AKA variables, parameters, properties, attributes, or stanchions). The intersection of a row and column is called a sell.
Formalization:
\[ \]
Cites: Wikipedia Table (information) ; Wikipedia Table Table (database) ; Wikidata ; Wolfram
ML Frameworks Interoperability Cheat Sheet
Code
Documentation: data.frame: Data Frames
Examples:
Documentation: pandas.DataFrame
Examples:
Documentation: PostgreSQL AVG Function
library(DBI)
# Create an ephemeral in-memory RSQLite database
#con <- dbConnect(RSQLite::SQLite(), dbname = ":memory:")
#dbListTables(con)
#dbWriteTable(con, "mtcars", mtcars)
#dbListTables(con)
#Configuration failed because libpq was not found. Try installing:
#* deb: libpq-dev libssl-dev (Debian, Ubuntu, etc)
#install.packages('RPostgres')
#remotes::install_github("r-dbi/RPostgres")
#Took forever because my file permissions were broken
#pg_lsclusters
require(RPostgres)
Loading required package: RPostgres