Adding cognostics
Let's practice custom cognostics by taking the by_symbol
data merged with the stock metadata creating a cognostic for the log market capitalization.
Este ejercicio forma parte del curso
Visualizing Big Data with Trelliscope in R
Instrucciones del ejercicio
- Use
mutate()
to create a new variable,market_cap_log
, which is the base 10 logarithm ofmarket_cap
. - Use the
cog()
wrapper function to provide a custom description for the cognostic,"log base 10 market capitalization"
.
Ejercicio interactivo práctico
Prueba este ejercicio y completa el código de muestra.
library(trelliscopejs)
library(dplyr)
# Create market_cap_log
by_symbol <- mutate(by_symbol,
___ = cog(
val = ___(___),
___ = "log base 10 market capitalization"
)
)