Tables
Regular R output
#for the dataset
data('mtcars')
mcor <-cor(mtcars)
# Print mcor and round to 2 digits
round(mcor,digits=2)## mpg cyl disp hp drat wt qsec vs am gear carb
## mpg 1.00 -0.85 -0.85 -0.78 0.68 -0.87 0.42 0.66 0.60 0.48 -0.55
## cyl -0.85 1.00 0.90 0.83 -0.70 0.78 -0.59 -0.81 -0.52 -0.49 0.53
## disp -0.85 0.90 1.00 0.79 -0.71 0.89 -0.43 -0.71 -0.59 -0.56 0.39
## hp -0.78 0.83 0.79 1.00 -0.45 0.66 -0.71 -0.72 -0.24 -0.13 0.75
## drat 0.68 -0.70 -0.71 -0.45 1.00 -0.71 0.09 0.44 0.71 0.70 -0.09
## wt -0.87 0.78 0.89 0.66 -0.71 1.00 -0.17 -0.55 -0.69 -0.58 0.43
## qsec 0.42 -0.59 -0.43 -0.71 0.09 -0.17 1.00 0.74 -0.23 -0.21 -0.66
## vs 0.66 -0.81 -0.71 -0.72 0.44 -0.55 0.74 1.00 0.17 0.21 -0.57
## am 0.60 -0.52 -0.59 -0.24 0.71 -0.69 -0.23 0.17 1.00 0.79 0.06
## gear 0.48 -0.49 -0.56 -0.13 0.70 -0.58 -0.21 0.21 0.79 1.00 0.27
## carb -0.55 0.53 0.39 0.75 -0.09 0.43 -0.66 -0.57 0.06 0.27 1.00
HTML table using xtable
library(xtable)
print(xtable(mcor), type='html', comment=F)| mpg | cyl | disp | hp | drat | wt | qsec | vs | am | gear | carb | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| mpg | 1.00 | -0.85 | -0.85 | -0.78 | 0.68 | -0.87 | 0.42 | 0.66 | 0.60 | 0.48 | -0.55 |
| cyl | -0.85 | 1.00 | 0.90 | 0.83 | -0.70 | 0.78 | -0.59 | -0.81 | -0.52 | -0.49 | 0.53 |
| disp | -0.85 | 0.90 | 1.00 | 0.79 | -0.71 | 0.89 | -0.43 | -0.71 | -0.59 | -0.56 | 0.39 |
| hp | -0.78 | 0.83 | 0.79 | 1.00 | -0.45 | 0.66 | -0.71 | -0.72 | -0.24 | -0.13 | 0.75 |
| drat | 0.68 | -0.70 | -0.71 | -0.45 | 1.00 | -0.71 | 0.09 | 0.44 | 0.71 | 0.70 | -0.09 |
| wt | -0.87 | 0.78 | 0.89 | 0.66 | -0.71 | 1.00 | -0.17 | -0.55 | -0.69 | -0.58 | 0.43 |
| qsec | 0.42 | -0.59 | -0.43 | -0.71 | 0.09 | -0.17 | 1.00 | 0.74 | -0.23 | -0.21 | -0.66 |
| vs | 0.66 | -0.81 | -0.71 | -0.72 | 0.44 | -0.55 | 0.74 | 1.00 | 0.17 | 0.21 | -0.57 |
| am | 0.60 | -0.52 | -0.59 | -0.24 | 0.71 | -0.69 | -0.23 | 0.17 | 1.00 | 0.79 | 0.06 |
| gear | 0.48 | -0.49 | -0.56 | -0.13 | 0.70 | -0.58 | -0.21 | 0.21 | 0.79 | 1.00 | 0.27 |
| carb | -0.55 | 0.53 | 0.39 | 0.75 | -0.09 | 0.43 | -0.66 | -0.57 | 0.06 | 0.27 | 1.00 |
2d graphs
These 2d examples are both from Winsong Chang's excellent R Graphics Cookbook.
Correlation Matrix Example
Correlation plot
library(corrplot)
corrplot(mcor)
Network Graph Example
library(igraph)# Specify edges for a directed graph
gd <-graph(c(1,2, 2,3, 2,4, 1,4, 5,5, 3,6))
plot(gd)
# For an undirected graph
gu <-graph(c(1,2, 2,3, 2,4, 1,4, 5,5, 3,6),directed=FALSE)
# No labels
plot(gu,vertex.label=NA)