我想在R中使用發散的調色板創建一個簡單的熱圖。我想要使用漸變,以便低於閾值N的所有數字都被指定爲一種顏色(如紫色),並且高於閾值的所有數字都被指定爲另一種顏色(如橙色)。離閾值越遠,顏色越深。R散熱圖與發散的調色板
下面是一個示例數據集:
Division,COL1,COL2,COL3,COL4,COL5,COL6,COL7
Division 1,31.9221884012222,75.8181694429368,97.0480443444103,96.295954938978,70.5677134916186,63.0451830103993,93.0396212730557
Division 2,85.7,29.0621076244861,16.9130333233625,94.6443660184741,19.9103083927184,61.9562198873609,72.3791105207056
Division 3,47.1665125340223,99.4153356179595,8.51091076619923,79.1276383213699,41.915355855599,7.45079894550145,24.6946100145578
Division 4,66.0743870772421,24.6163331903517,78.694460215047,42.04714265652,50.2694897353649,73.0409651994705,87.3745442833751
Division 5,29.6664374880493,35.4036891367286,19.2967326845974,5.48460693098605,32.4517334811389,15.5926876701415,76.0523204226047
Division 6,95.4969164915383,8.63230894319713,61.7535551078618,24.5590241160244,25.5453423131257,56.397921172902,44.4693325087428
Division 7,87.5015622004867,28.7770316936076,56.5095080062747,34.6680747810751,28.1923673115671,65.0204187724739,13.795713102445
Division 8,70.1077231671661,72.4712177179754,38.4903231170028,36.1821102909744,97.0875509083271,17.184783378616,78.2292529474944
Division 9,47.3570406902581,90.2257485780865,65.6037972308695,77.0234781783074,25.6294377148151,84.900529962033,82.5080851092935
Division 10,58.0811711959541,0.493217632174492,58.5604055318981,53.5780876874924,9.12552657537162,20.313960686326,78.1371118500829
Division 11,34.6708688884974,76.711881859228,22.6064443588257,22.1724311355501,5.48891355283558,79.1159523651004,56.8405059166253
Division 12,33.6812808644027,44.1363711375743,70.6362190190703,3.78900407813489,16.6075889021158,9.12654218263924,39.9711143691093
下面是一個簡單片斷到從上述數據
data <- read.csv("dataset.csv", sep=",")
row.names(data) <- data$Division
data <- data[,2:7]
data_matrix <- data.matrix(data)
heatmap(data_matrix, Rowv=NA, Colv=NA, col = heat.colors(256), scale="column", margins=c(5,10))
產生熱圖如何修改上面的代碼以產生:
- 所有數字大於50的顏色漸變(橙色)(越深,數字越大,從50開始)
- 顏色梯度(紫色)爲少於50的所有數字(較暗的進一步的數目爲50)
- 最好有(但可選)寫在網格單元
- 最好有數目的值(但可選),使用不同的顏色用於網格單元這正是閾值數量(50在這種情況下)
[[編輯]]
我剛纔看到這個question on SO,這似乎是非常類似。答案使用ggplot(我沒有經驗),到目前爲止,我無法將ggplot解決方案適用於我稍微複雜的數據。
了'RColorBrewer'包裝具有良好的palletes:嘗試'RColorBrewer :::啤酒.pal(11,「PuOr」)',然後指定一個休息參數,儘管你可能需要通過'image()'函數來完成。 –
@timriffe - 不錯的建議。我偷了你的配色方案,我的答案如下 - 希望你不介意) –
@ JoshO'Brien肯定。在實驗室空間上插入的方式! –