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R語言中繪製彩色相關性矩陣

> data(mtcars) > #首先匯入資料集mtcars > corr <- cor(mtcars) > #將資料集中的每個列的相關係數統計出來並儲存在一個corr的引數中 > corr > #檢視corr資料結果,統計出來的相互之間的相關係數             mpg        cyl       disp         hp        drat         wt        qsec         vs          am mpg   1.0000000 -0.8521620 -0.8475514 -0.7761684  0.68117191 -0.8676594  0.41868403  0.6640389  0.59983243 cyl  -0.8521620  1.0000000  0.9020329  0.8324475 -0.69993811  0.7824958 -0.59124207 -0.8108118 -0.52260705 disp -0.8475514  0.9020329  1.0000000  0.7909486 -0.71021393  0.8879799 -0.43369788 -0.7104159 -0.59122704 hp   -0.7761684  0.8324475  0.7909486  1.0000000 -0.44875912  0.6587479 -0.70822339 -0.7230967 -0.24320426 drat  0.6811719 -0.6999381 -0.7102139 -0.4487591  1.00000000 -0.7124406  0.09120476  0.4402785  0.71271113 wt   -0.8676594  0.7824958  0.8879799  0.6587479 -0.71244065  1.0000000 -0.17471588 -0.5549157 -0.69249526 qsec  0.4186840 -0.5912421 -0.4336979 -0.7082234  0.09120476 -0.1747159  1.00000000  0.7445354 -0.22986086 vs    0.6640389 -0.8108118 -0.7104159 -0.7230967  0.44027846 -0.5549157  0.74453544  1.0000000  0.16834512 am    0.5998324 -0.5226070 -0.5912270 -0.2432043  0.71271113 -0.6924953 -0.22986086  0.1683451  1.00000000 gear  0.4802848 -0.4926866 -0.5555692 -0.1257043  0.69961013 -0.5832870 -0.21268223  0.2060233  0.79405876 carb -0.5509251  0.5269883  0.3949769  0.7498125 -0.09078980  0.4276059 -0.65624923 -0.5696071  0.05753435            gear        carb mpg   0.4802848 -0.55092507 cyl  -0.4926866  0.52698829 disp -0.5555692  0.39497686 hp   -0.1257043  0.74981247 drat  0.6996101 -0.09078980 wt   -0.5832870  0.42760594 qsec -0.2126822 -0.65624923 vs    0.2060233 -0.56960714 am    0.7940588  0.05753435 gear  1.0000000  0.27407284 carb  0.2740728  1.00000000 > install.packages("corrplot")
>#安裝corrplot包,全稱是Correlation R Plot trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.1/corrplot_0.73.zip' Content type 'application/zip' length 2680438 bytes (2.6 Mb) opened URL downloaded 2.6 Mb package ‘corrplot’ successfully unpacked and MD5 sums checked The downloaded binary packages are in C:\Users\chn-fzj\AppData\Local\Temp\Rtmp6lhx90\downloaded_packages > require(corrplot)
Loading required package: corrplot > corrplot(corr)

 > corrplot(corr,method="shade",shade.col=NA,tl.col="black",tl.srt=45)



>#兩個命令的主要差異在於:method引數設定的不一樣,其他引數只是修改字型顏色和傾斜等等 >#method引數主要包括以下幾種:"circle", "square", "ellipse", "number", "shade", "color", "pie" > par(mfrow=c(4,2)) > corrplot(corr,method="circle")
> corrplot(corr,method="square") > corrplot(corr,method="ellipse") > corrplot(corr,method="number") > corrplot(corr,method="shade") > corrplot(corr,method="color") > corrplot(corr,method="pie")

#本案例用到的包是corrplot #用到的命令是corrplot() #用到的資料集是mtcars #個人的偏好的method是“number”,效果見下圖: