查找接近colorBrewer调色板的颜色的颜色名称 [英] Find color names for colors close to colorBrewer palette
问题描述
我想使用R包SNA进行社交网络分析。 SNA仅使用R颜色名称(文本名称)为元素上色。
I want to use the R package SNA to do social network analysis. SNA colors elements only using R color names (text names).
我想查找从ColorBrewer调色板(set3)到R中颜色名称的近似匹配项。
I'd like to find near matches from a ColorBrewer palette (set3) to the color names in R.
在RGB空间中没有很多精确匹配项。
There aren't many exact matches in the RGB space.
require(RColorBrewer)
brew10 <- brewer.pal(10, "Set3")
rcol <- colors()
brew10rgb <- col2rgb(brew10)
allrgb <- col2rgb(rcol)
apply(t(brew10rgb), 1, paste, collapse="$$") %in% apply(t(allrgb), 1, paste,collapse="$$")
brew10rgb[,1]
fltr <- allrgb[1,]==141
allrgb[,fltr]
fltr <- allrgb[2,]==211
allrgb[,fltr]
是否可以选择一种好的颜色名称定性调色板,还是将这些RColorBrewer颜色映射到现有颜色?
Is there a way to pick good color names for a qualitative palette in R, or to map these RColorBrewer colors to existing colors?
推荐答案
看看这是否有用。 (这是rgb空间上的LI距离):
See if this is useful. (It's an LI distance on rgb space):
col.dist <- function(inp, comp) sum( abs(inp - col2rgb(comp) ) )
colors()[ apply(col2rgb(brew10), 2,
function(z) which.min( sapply(colors(),
function(x) col.dist(inp=z, comp=x) ) ) ) ]
#-----------
[1] "paleturquoise3" "moccasin" "lightsteelblue" "salmon"
[5] "lightskyblue3" "sandybrown" "darkolivegreen2" "thistle2"
[9] "gray85" "orchid3"
看起来好像已经成功查看了:
Looks like it might have succeeded looking at:
display.brewer.pal(10,"Set3")
(尽管我从未见过这种颜色的蓟,但我本来以为7号更像是轻油而不是 darkolive。)如果您使他调用了一次颜色并存储了该矩阵。
(Although I have never see a thistle that color, and I would have thought number 7 to be more of a "lightolive" than a "darkolive".) You would proably get faster response, although this seemed acceptable, if you made the call to colors once and stored that matrix.
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