ggnetwork::geom_nodes() requires more colors than there are nodes
Load ggnetwork, network, sna, igraph, and ggplot:
library(igraph)
library(network)
library(sna)
library(ggnetwork)
library(ggplot2)
Create an igraph object with five vertices and two edges:
test <- structure(list(5, TRUE, c(0, 3), c(4, 1), c(0, 1),
c(1, 0), c(0, 1, 1, 1, 2, 2),
c(0, 0, 1, 1, 1, 2),
list(c(1, 0, 1),
structure(list(),
.Names = character(0)),
list(name = c("3", "6", "7", "2", "1")),
list(weight = c(3.30310760667904, 3.55724789915966))), environment),
class = "igraph")
Check the number of nodes and edges:
igraph::ecount(test)
[1] 2
igraph::vcount(test)
[1] 5
The following code works (it should not work, notice that the number of color values in geom_nodes() is wrong, there should be five values, but 7 are given):
ggplot(test,aes(x = x, y = y, xend = xend, yend = yend)) +
geom_edges(arrow = arrow(), color = 'black') +
geom_nodes(size =10, aes(color=1:7/(7))) +
scale_color_gradient(low = "green", high = "red")
If if the correct number of values for geom_nodes(aes(color= )) is used instead, an error is generated:
ggplot(test, aes(x = x, y = y, xend = xend, yend = yend)) +
geom_edges(arrow = arrow(), color ='black') +
geom_nodes(size =10, aes(color=1:5/(5))) +
scale_color_gradient(low = "green", high = "red")
Error: Aesthetics must be either length 1 or the same as the data (7): colour
Notice that geom_nodes seems to require that |color| = |nodes| + |edges|, why is this?
Is there a way around this?
If there are 7 colors passed, how does it decide which 5 to use for the node colors?
r ggplot2 igraph sna ggnetwork
asked Nov 16 '18 at 1:47
mkkmkk
597
add a comment |
Load ggnetwork, network, sna, igraph, and ggplot:
library(igraph)
library(network)
library(sna)
library(ggnetwork)
library(ggplot2)
Create an igraph object with five vertices and two edges:
test <- structure(list(5, TRUE, c(0, 3), c(4, 1), c(0, 1),
c(1, 0), c(0, 1, 1, 1, 2, 2),
c(0, 0, 1, 1, 1, 2),
list(c(1, 0, 1),
structure(list(),
.Names = character(0)),
list(name = c("3", "6", "7", "2", "1")),
list(weight = c(3.30310760667904, 3.55724789915966))), environment),
class = "igraph")
Check the number of nodes and edges:
igraph::ecount(test)
[1] 2
igraph::vcount(test)
[1] 5
The following code works (it should not work, notice that the number of color values in geom_nodes() is wrong, there should be five values, but 7 are given):
ggplot(test,aes(x = x, y = y, xend = xend, yend = yend)) +
geom_edges(arrow = arrow(), color = 'black') +
geom_nodes(size =10, aes(color=1:7/(7))) +
scale_color_gradient(low = "green", high = "red")
If if the correct number of values for geom_nodes(aes(color= )) is used instead, an error is generated:
ggplot(test, aes(x = x, y = y, xend = xend, yend = yend)) +
geom_edges(arrow = arrow(), color ='black') +
geom_nodes(size =10, aes(color=1:5/(5))) +
scale_color_gradient(low = "green", high = "red")
Error: Aesthetics must be either length 1 or the same as the data (7): colour
Notice that geom_nodes seems to require that |color| = |nodes| + |edges|, why is this?
Is there a way around this?
If there are 7 colors passed, how does it decide which 5 to use for the node colors?
r ggplot2 igraph sna ggnetwork
asked Nov 16 '18 at 1:47
mkkmkk
597
add a comment |
Load ggnetwork, network, sna, igraph, and ggplot:
library(igraph)
library(network)
library(sna)
library(ggnetwork)
library(ggplot2)
Create an igraph object with five vertices and two edges:
test <- structure(list(5, TRUE, c(0, 3), c(4, 1), c(0, 1),
c(1, 0), c(0, 1, 1, 1, 2, 2),
c(0, 0, 1, 1, 1, 2),
list(c(1, 0, 1),
structure(list(),
.Names = character(0)),
list(name = c("3", "6", "7", "2", "1")),
list(weight = c(3.30310760667904, 3.55724789915966))), environment),
class = "igraph")
Check the number of nodes and edges:
igraph::ecount(test)
[1] 2
igraph::vcount(test)
[1] 5
The following code works (it should not work, notice that the number of color values in geom_nodes() is wrong, there should be five values, but 7 are given):
ggplot(test,aes(x = x, y = y, xend = xend, yend = yend)) +
geom_edges(arrow = arrow(), color = 'black') +
geom_nodes(size =10, aes(color=1:7/(7))) +
scale_color_gradient(low = "green", high = "red")
If if the correct number of values for geom_nodes(aes(color= )) is used instead, an error is generated:
ggplot(test, aes(x = x, y = y, xend = xend, yend = yend)) +
geom_edges(arrow = arrow(), color ='black') +
geom_nodes(size =10, aes(color=1:5/(5))) +
scale_color_gradient(low = "green", high = "red")
Error: Aesthetics must be either length 1 or the same as the data (7): colour
Notice that geom_nodes seems to require that |color| = |nodes| + |edges|, why is this?
Is there a way around this?
If there are 7 colors passed, how does it decide which 5 to use for the node colors?
r ggplot2 igraph sna ggnetwork
asked Nov 16 '18 at 1:47
mkkmkk
597
Load ggnetwork, network, sna, igraph, and ggplot:
library(igraph)
library(network)
library(sna)
library(ggnetwork)
library(ggplot2)
Create an igraph object with five vertices and two edges:
test <- structure(list(5, TRUE, c(0, 3), c(4, 1), c(0, 1),
c(1, 0), c(0, 1, 1, 1, 2, 2),
c(0, 0, 1, 1, 1, 2),
list(c(1, 0, 1),
structure(list(),
.Names = character(0)),
list(name = c("3", "6", "7", "2", "1")),
list(weight = c(3.30310760667904, 3.55724789915966))), environment),
class = "igraph")
Check the number of nodes and edges:
igraph::ecount(test)
[1] 2
igraph::vcount(test)
[1] 5
The following code works (it should not work, notice that the number of color values in geom_nodes() is wrong, there should be five values, but 7 are given):
ggplot(test,aes(x = x, y = y, xend = xend, yend = yend)) +
geom_edges(arrow = arrow(), color = 'black') +
geom_nodes(size =10, aes(color=1:7/(7))) +
scale_color_gradient(low = "green", high = "red")
If if the correct number of values for geom_nodes(aes(color= )) is used instead, an error is generated:
ggplot(test, aes(x = x, y = y, xend = xend, yend = yend)) +
geom_edges(arrow = arrow(), color ='black') +
geom_nodes(size =10, aes(color=1:5/(5))) +
scale_color_gradient(low = "green", high = "red")
Error: Aesthetics must be either length 1 or the same as the data (7): colour
Notice that geom_nodes seems to require that |color| = |nodes| + |edges|, why is this?
Is there a way around this?
If there are 7 colors passed, how does it decide which 5 to use for the node colors?
r ggplot2 igraph sna ggnetwork
r ggplot2 igraph sna ggnetwork
asked Nov 16 '18 at 1:47
mkkmkk
597
asked Nov 16 '18 at 1:47
mkkmkk
597
edited Nov 16 '18 at 8:19
mkk
asked Nov 16 '18 at 1:47
mkkmkk
597
asked Nov 16 '18 at 1:47
mkkmkk
597
asked Nov 16 '18 at 1:47
mkkmkk
597
597
add a comment |
add a comment |
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