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SLIDES @ https://bit.ly/rslides-9jul2020INSTALL R @ https://bit.ly/installR-9jul2020ADDITIONAL FILES* @ https://bit.ly/rfiles-9jul2020
Additional files* consist: • Installation - Powerful R Graphics.R (2 add on packages)• Powerful R Graphics.R file (Illustration during the workshop)• 4 animation files (.gif files)
Do not open these files, just download a local copy. We will explain more later.
Powerful R graphics
Dr. Tan Teck Kiang10:00 am – 11:30 am9 July 2020 (Thursday)
SLIDES
https://bit.ly/rslides-9jul2020
House Rules
3
Please use your personal name.
Rename yourselves
(Participants hover around your name, select rename)
You will be muted by default but you may keep your
camera on
Questions during the workshop can be typed into the chat screen
Session will be recorded
Q&A at the end of the session
(email is possible)
Survey at the end of this session
This workshop will be recorded and be used for NUS Libraries' archival, communications and promotional purposes. The recording will be uploaded to a secure server for access by other NUS students and staff.
By joining the event, you agree to be filmed for any and all media purposes without compensation or acknowledgement.
SLIDES
https://bit.ly/rslides-9jul2020
CONTENTS
1 An Overview of R Graphics Packages2 3 General Graphical Packages in R
1 Base2 ggplot23 lattice
3 Interesting and Creative R Graphics
SLIDES
https://bit.ly/rslides-9jul2020
6
WHAT IS R?
R R RR R RRR R
AN OVERVIEW OF R GRAPHICS PACKAGES
Base
lattice
ggplot2
scatterplot3d cluster
rgl
shape
AnalyzeFMRI
vcd
FactoMineR
timeSeries
forecast
circlize
plotrix
misc3d
dygraphs
The 3 General Graphical Tools
Specific Analytical Based
Data Frame
glm()polr()
hclust()ModelObject
plot(model)
Analytical Based
Specific
Package plot3D
3D Histogramhist3D()
Circular Visualization
Package circlize3-Dimensional Plot
Chord DiagramchordDiagram()
BASE R GRAPHIC
It is available when R package is loaded
R starts up with the graphics and grDevices packages automatically loaded.
Most common to start with
Conceptually simpler
Constructed step by step through function calls.
SLIDES
https://bit.ly/rslides-9jul2020
PACKAGE LATTICE
The lattice package was written by Deepayan Sarkar.
Package lattice - download as an add-on package
To use it - library(lattice)
Based on Grid Graphic System
Complex multivariate data can often be better visualized by conditioning and grouping
Most useful for conditioning types of plots: how y changes with x across levels of z
Example: Tree Circumference x Age Breakdown by Tree
PACKAGE GGPLOTS
The ggplot2 package was written by Hadley Wickham.
Package gglot2 paradigm – Wilkinson’s “Grammar of Graphics” (gg)
Package ggolots2 - download as an add-on package
To use it - library(ggplot2)
Based on Grid Graphic System
Multivariate exploration is greatly simplified through faceting and colouring.
Faceting
Creating a subplots for each subset of your data
It is a good way to spot relationships.
In base R you’d have to construct each plot in a loop.
Grouping by Colours
Give different colours by group
Base ggplot2 lattice
plot(x,y) ggplot(aes(x,y))+ geom_point()
xyplot(y~x)
Scatter Plot
ggplot2 lattice
plot(x,y,type="l")
ggplot(aes(x,y)) + geom_line()
xyplot(y~x,type='l')
Line ChartBase
ggplot2 lattice
barplot(x) ggplot(x, y) + geom_bar()
barchart(y~x)
Bar Chart
Base
Density Plot
ggplot2 latticeBase
plot(density(x)) ggplot(aes(x)) + geom_density()
densityplot(~x)
Base, ggplot2, and lattice
WHICH TO CHOOSE? BASE, LATTICE AND GGPLOT2?
Personal preferences and grammar idiosyncrasies
Presentation or exploratory?
Exploratory graphs do not have to be pretty.
Go for the plot that with minimal code – Base can be more straight forward.
Creating expository graphs for publication, intended to explain and …
All 3 works
Other add-on packages
Create for impact and diversity
ggplot and extensions add-on packages
Need comparison of a group / class
Faceting or Conditioning – Go for ggplot2 or lattice
BECOME A GRAPHICAL INNOVATOR – BAR CHART
1. Faceting and Conditioning
2. Circular and Stacked Circular Bar Chart
3. Back to Back Bar Chart
4. Overlapping Bar Chart / Marimekko Replacement Chart
5. Another Circular Stacked Bar Chart
6. Rose Diagram
7. 3 Dimensional Bar Chart + Scatter Plot
Faceting / Conditioning
ggplot2 and lattice
Stacked Circular Bar Plot
BACK TO BACK BAR CHART
OVERLAPPING BAR CHART
CIRCULAR BAR CHART
ROSE DIAGRAM
BAR CHART
3 Dimensional Bar Chart + Scatter Plot
INTERESTING GRAPHS
Discrete and Categorical
Lollipop Plot
Diverging Bar Char and Lollipop Plot
Pie Chart and Waffle Plot
Scatter Pie Chart and World Map
Balloon Plot, Correspondence Analysis, Mosaic, and Alluvial Diagram
Association / Modelling
Scatterplot Matrix
Estimated Logistic Regression with Rug and Histogram
Scatter Plot with Ellipse, Text and Cluster Mean
Time Series and Longitudinal
Seasonal Subseries Plot
Heatmap for Trend
Calendar-Based Graphics
Ridgeline Plot
Map, Shape and Circle
Map
3D Plots
Circular Visualization
Animation
Time Series dygraphs()
3D Animation
Analysis of fMRI Data
Bubble Chart and Faceting
Analysis of fMRI Data
DISCRETE AND CATEGORICAL
SLIDES
https://bit.ly/rslides-9jul2020
A lollipop plot is basically a bar plot, where the bar is transformed in a line and a dot. It shows the relationship between a numeric and a categoric variable.Lollipop Plot
Diverging Bar Char and Lollipop Plot
Pie Chart and Waffle Plot
Scatter Pie Chart Scatter Pie Chart World Map
WHO DO WHAT TASK? [ TABULATION TO GRAPH ]
1,744 House Task
Ask husband and wife who do the 13 tasks
Wife
Husband
Alternating
Jointly
Tabulation of 1,744 Pairs of Husband and Wife
House Task Wife Alternating Husband Jointly TotalLaundry 156 14 2 4 176Main Meal 124 20 5 4 153Dinner 77 11 7 13 108Breakfast 82 36 15 7 140Tidying 53 11 1 57 122Dishes 32 24 4 53 113Shopping 33 23 9 55 120Official 12 46 23 15 96Driving 10 51 75 3 139Finances 13 13 21 66 113Insurance 8 1 53 77 139Repairs 0 3 160 2 165Holidays 0 1 6 153 160Total 600 254 381 509 1744
Mosaic Plot
Correspondence Analysis
Alluvial Diagram
Balloon Plot
ASSOCIATION AND MODELLING
SLIDES
https://bit.ly/rslides-9jul2020
Scatterplot Matrix
Scatterplot Matrix
Estimated Logistic Regression with Rug and Histogram
Scatter Plot with Ellipses, Text and Cluster Mean
TIME SERIES AND LONGITUDINAL
Seasonal Subseries Plot
Heatmap for Trend
Polio, or poliomyelitis, is a disabling and life-threatening disease caused by the poliovirus.
Serious Symptoms
ParesthesiaFeeling of pins and needles in the legs
Meningitis Infection of the covering of the spinal cord and/or brain
ParalysisCannot move parts of the body)
Calendar-Based Graphics
Ridgeline Plot
MAP, SHAPE, AND CIRCLE
Map
3D Plots
Clock DartboardBagua and Taiji
Circular Visualization
Gu, Z. et al (2014). circlize implements and enhances circular visualization in R. Bioinformatics, 1-2. https://jokergoo.github.io/circlize_book/book/index.html
Chord Diagram
ANIMATION
Time Series Package dygraphsdygraphs()
3D Animation
3dAnimatedScatterplot.gifRotating Bar Chart with Scatter Plot 3D.gif
Animation – Bubble Chart (Population Size)Growth of Wealth and Life Expectancy by Continent
Animated Faceted Bubble Plot.gifAnimated Bubble Plot.gif
Analysis of fMRI Data
A Lot More …
BOOKS ON R GRAPHICS
THANK YOU
SPECIAL THANKS TO NUS LIBRARIESDr. Magdeline Ng & Miss Kho Su Yian
FACILITATOR: Dr. Magdeline Ng
SLIDES
https://bit.ly/rslides-9jul2020
HAVE A MINUTE? HELP US IMPROVEj.mp/RU_fdbk_2020
MAGDELINE NG (Dr)[email protected]
Education Services & Learning Innovation, NUS Libraries
Title: Overview of R
Institute for Applied Learning Science and Educational Technology
Tan Teck Kiang
Thank You
SLIDES @ https://bit.ly/rslides-9jul2020INSTALL R @ https://bit.ly/installR-9jul2020ADDITIONAL FILES* @ https://bit.ly/rfiles-9jul2020
Additional files* consist: • Installation - Powerful R Graphics.R (2 add on packages)• Powerful R Graphics.R file (Illustration during the workshop)• 4 animation files (.gif files)
Do not open these files, just download a local copy. We will explain more later.
