Descriptive statistics
Descriptive statistics
Descriptive statistics
Central tendencies
Central tendencies
Skewness
Kurtosis
Descriptive statistics is not enough!
Datasaurus!
Datasaurus!
Datasaurus!
Data visualisation in R
ggplot2
Grammar of Graphics
Hadley Wickham
It was not so easy
ggplot2 fundamentals
Data layers consist of:
- data
- aesthetic mapping: aes()
- a statistical transformation: stat
- a geometric object: geom
- a position adjustment: position
“Aesthetics, in the original Greek sense, offers principles for relating sensory attributes (color, shape, sound, etc.) to abstractions.”
ggplot2 fundamentals
In addition to layers you may specify:
- scale for each aesthetic mapping: scale
- a coordinate system: coord
- the faceting specification: facet
- theme
plotly
plotly
- Dynamic visualization
- d3.js is used
Other html-widgets
http://gallery.htmlwidgets.org/
- leaflet
- listviewer
- wordcloud2
- networkD3
Something about good graphics
Avoid meaningless decorations
Avoid many colours and info
Data-Ink ratio
RMarkdown
RMarkdown
Thank you!
