R - How to assign color for values with color2d.matplot
1
My question deals with the color2d.matplot function from the plotrix package. The function is documented here.
I have this output:
Produced by this code:
library(plotrix)
# model parameters
spaces <- 400
agents<- 300
prop_black = 0.5
prop_white = 1 - prop_black
tolerance <- 0.6
# creating matrix of types
group<-c(rep(0,spaces-agents),rep(1,prop_black*agents),rep(2,prop_white*agents))
grid<-matrix(sample(group,400,replace=F), ncol=20)
# plotting
color2D.matplot(grid, ylab="", xlab = "", axes=F)
plot(runif(100,0,1),ylab="Happy",xlab="Time",col="white",ylim=c(0,1))
Notice that my grid contains values of 0,1,2 only.
How do I make it so that:
- All values of 0 map to white squares.
- All values of 1 map to red squares.
- All values of 2 map to blue squares.
I tried to figure it out by looking at these examples but didn't have much luck.
r plot plotrix
edited Nov 16 '18 at 12:16
Henrik
42.3k994110
asked Nov 16 '18 at 10:50
Thevesh ThevaThevesh Theva
4321616
add a comment |
1
My question deals with the color2d.matplot function from the plotrix package. The function is documented here.
I have this output:
Produced by this code:
library(plotrix)
# model parameters
spaces <- 400
agents<- 300
prop_black = 0.5
prop_white = 1 - prop_black
tolerance <- 0.6
# creating matrix of types
group<-c(rep(0,spaces-agents),rep(1,prop_black*agents),rep(2,prop_white*agents))
grid<-matrix(sample(group,400,replace=F), ncol=20)
# plotting
color2D.matplot(grid, ylab="", xlab = "", axes=F)
plot(runif(100,0,1),ylab="Happy",xlab="Time",col="white",ylim=c(0,1))
Notice that my grid contains values of 0,1,2 only.
How do I make it so that:
- All values of 0 map to white squares.
- All values of 1 map to red squares.
- All values of 2 map to blue squares.
I tried to figure it out by looking at these examples but didn't have much luck.
r plot plotrix
edited Nov 16 '18 at 12:16
Henrik
42.3k994110
asked Nov 16 '18 at 10:50
Thevesh ThevaThevesh Theva
4321616
1
What does the secondplotthing has to do with your question? ;)
– Henrik
Nov 16 '18 at 11:35
add a comment |
1
1
1
My question deals with the color2d.matplot function from the plotrix package. The function is documented here.
I have this output:
Produced by this code:
library(plotrix)
# model parameters
spaces <- 400
agents<- 300
prop_black = 0.5
prop_white = 1 - prop_black
tolerance <- 0.6
# creating matrix of types
group<-c(rep(0,spaces-agents),rep(1,prop_black*agents),rep(2,prop_white*agents))
grid<-matrix(sample(group,400,replace=F), ncol=20)
# plotting
color2D.matplot(grid, ylab="", xlab = "", axes=F)
plot(runif(100,0,1),ylab="Happy",xlab="Time",col="white",ylim=c(0,1))
Notice that my grid contains values of 0,1,2 only.
How do I make it so that:
- All values of 0 map to white squares.
- All values of 1 map to red squares.
- All values of 2 map to blue squares.
I tried to figure it out by looking at these examples but didn't have much luck.
r plot plotrix
edited Nov 16 '18 at 12:16
Henrik
42.3k994110
asked Nov 16 '18 at 10:50
Thevesh ThevaThevesh Theva
4321616
My question deals with the color2d.matplot function from the plotrix package. The function is documented here.
I have this output:
Produced by this code:
library(plotrix)
# model parameters
spaces <- 400
agents<- 300
prop_black = 0.5
prop_white = 1 - prop_black
tolerance <- 0.6
# creating matrix of types
group<-c(rep(0,spaces-agents),rep(1,prop_black*agents),rep(2,prop_white*agents))
grid<-matrix(sample(group,400,replace=F), ncol=20)
# plotting
color2D.matplot(grid, ylab="", xlab = "", axes=F)
plot(runif(100,0,1),ylab="Happy",xlab="Time",col="white",ylim=c(0,1))
Notice that my grid contains values of 0,1,2 only.
How do I make it so that:
- All values of 0 map to white squares.
- All values of 1 map to red squares.
- All values of 2 map to blue squares.
I tried to figure it out by looking at these examples but didn't have much luck.
r plot plotrix
r plot plotrix
edited Nov 16 '18 at 12:16
Henrik
42.3k994110
asked Nov 16 '18 at 10:50
Thevesh ThevaThevesh Theva
4321616
edited Nov 16 '18 at 12:16
Henrik
42.3k994110
asked Nov 16 '18 at 10:50
Thevesh ThevaThevesh Theva
4321616
edited Nov 16 '18 at 12:16
Henrik
42.3k994110
edited Nov 16 '18 at 12:16
Henrik
42.3k994110
edited Nov 16 '18 at 12:16
Henrik
42.3k994110
42.3k994110
asked Nov 16 '18 at 10:50
Thevesh ThevaThevesh Theva
4321616
asked Nov 16 '18 at 10:50
Thevesh ThevaThevesh Theva
4321616
asked Nov 16 '18 at 10:50
Thevesh ThevaThevesh Theva
4321616
4321616
1
What does the secondplotthing has to do with your question? ;)
– Henrik
Nov 16 '18 at 11:35
add a comment |
1
What does the secondplotthing has to do with your question? ;)
– Henrik
Nov 16 '18 at 11:35
1
1
What does the second
plot thing has to do with your question? ;)– Henrik
Nov 16 '18 at 11:35
What does the second
plot thing has to do with your question? ;)– Henrik
Nov 16 '18 at 11:35
add a comment |
2 Answers
2
active
oldest
votes
1
You may index a colour vector with the values in your matrix. A smaller example:
color2D.matplot(m, cellcolors = c("white", "red", "blue")[m + 1])
Data:
set.seed(7)
m <- matrix(sample(0:2, 9, replace = TRUE), nrow = 3, ncol = 3)
m
# [,1] [,2] [,3]
# [1,] 2 0 1
# [2,] 1 0 2
# [3,] 0 2 0
answered Nov 16 '18 at 12:11
HenrikHenrik
42.3k994110
add a comment |
1
One thing I could think of is to specify the color for each cell.
cellcolors <- unlist(grid)
cellcolors <- ifelse(cellcolors == 0, "white", ifelse(cellcolors == 1, "red", "blue"))
color2D.matplot(grid, ylab="", xlab = "", axes=F, cellcolors = cellcolors)
answered Nov 16 '18 at 11:48
erocoarerocoar
3,79811333
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
You may index a colour vector with the values in your matrix. A smaller example:
color2D.matplot(m, cellcolors = c("white", "red", "blue")[m + 1])
Data:
set.seed(7)
m <- matrix(sample(0:2, 9, replace = TRUE), nrow = 3, ncol = 3)
m
# [,1] [,2] [,3]
# [1,] 2 0 1
# [2,] 1 0 2
# [3,] 0 2 0
answered Nov 16 '18 at 12:11
HenrikHenrik
42.3k994110
add a comment |
1
You may index a colour vector with the values in your matrix. A smaller example:
color2D.matplot(m, cellcolors = c("white", "red", "blue")[m + 1])
Data:
set.seed(7)
m <- matrix(sample(0:2, 9, replace = TRUE), nrow = 3, ncol = 3)
m
# [,1] [,2] [,3]
# [1,] 2 0 1
# [2,] 1 0 2
# [3,] 0 2 0
answered Nov 16 '18 at 12:11
HenrikHenrik
42.3k994110
add a comment |
1
1
1
You may index a colour vector with the values in your matrix. A smaller example:
color2D.matplot(m, cellcolors = c("white", "red", "blue")[m + 1])
Data:
set.seed(7)
m <- matrix(sample(0:2, 9, replace = TRUE), nrow = 3, ncol = 3)
m
# [,1] [,2] [,3]
# [1,] 2 0 1
# [2,] 1 0 2
# [3,] 0 2 0
answered Nov 16 '18 at 12:11
HenrikHenrik
42.3k994110
You may index a colour vector with the values in your matrix. A smaller example:
color2D.matplot(m, cellcolors = c("white", "red", "blue")[m + 1])
Data:
set.seed(7)
m <- matrix(sample(0:2, 9, replace = TRUE), nrow = 3, ncol = 3)
m
# [,1] [,2] [,3]
# [1,] 2 0 1
# [2,] 1 0 2
# [3,] 0 2 0
answered Nov 16 '18 at 12:11
HenrikHenrik
42.3k994110
answered Nov 16 '18 at 12:11
HenrikHenrik
42.3k994110
answered Nov 16 '18 at 12:11
HenrikHenrik
42.3k994110
answered Nov 16 '18 at 12:11
HenrikHenrik
42.3k994110
42.3k994110
add a comment |
add a comment |
1
One thing I could think of is to specify the color for each cell.
cellcolors <- unlist(grid)
cellcolors <- ifelse(cellcolors == 0, "white", ifelse(cellcolors == 1, "red", "blue"))
color2D.matplot(grid, ylab="", xlab = "", axes=F, cellcolors = cellcolors)
answered Nov 16 '18 at 11:48
erocoarerocoar
3,79811333
add a comment |
1
One thing I could think of is to specify the color for each cell.
cellcolors <- unlist(grid)
cellcolors <- ifelse(cellcolors == 0, "white", ifelse(cellcolors == 1, "red", "blue"))
color2D.matplot(grid, ylab="", xlab = "", axes=F, cellcolors = cellcolors)
answered Nov 16 '18 at 11:48
erocoarerocoar
3,79811333
add a comment |
1
1
1
One thing I could think of is to specify the color for each cell.
cellcolors <- unlist(grid)
cellcolors <- ifelse(cellcolors == 0, "white", ifelse(cellcolors == 1, "red", "blue"))
color2D.matplot(grid, ylab="", xlab = "", axes=F, cellcolors = cellcolors)
answered Nov 16 '18 at 11:48
erocoarerocoar
3,79811333
One thing I could think of is to specify the color for each cell.
cellcolors <- unlist(grid)
cellcolors <- ifelse(cellcolors == 0, "white", ifelse(cellcolors == 1, "red", "blue"))
color2D.matplot(grid, ylab="", xlab = "", axes=F, cellcolors = cellcolors)
answered Nov 16 '18 at 11:48
erocoarerocoar
3,79811333
answered Nov 16 '18 at 11:48
erocoarerocoar
3,79811333
answered Nov 16 '18 at 11:48
erocoarerocoar
3,79811333
answered Nov 16 '18 at 11:48
erocoarerocoar
3,79811333
3,79811333
add a comment |
add a comment |
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1
What does the second
plotthing has to do with your question? ;)– Henrik
Nov 16 '18 at 11:35