我只是想出了怎麼辦,所以我postinf回答我自己的問題,希望它可能是對他人有用:
require(gplots) # for heatmap.2()
mydata <- read.csv(file="otu_tab_L4.txt", header=T, row.names=1, sep="\t")
#transposes it and makes a matrix
mydata_t <- t(as.matrix(mydata))
#makes Spearman's correlation
cor.matrix <- cor(mydata_t, method = "spearman")
#remove upper part of the matrix, since it gives the same informations
cor.matrix[upper.tri(cor.matrix)] <- NA
#checks matrix dimensions
dim(cor.matrix)
#Finally, I plotted a triangular heatmap of my matrix
##the standard function will put the y labels on the right!! I wanted them on the left! So ##changed the heatmap.2 function code in this way:
####open the code:
fix(heatmap.2)
###modify it in this way:
##when it says: " axis(4, iy, labels = labRow, las = 2, line = -0.5, tick = 0,
cex.axis = cexRow) "
##I put 2 in place of 4!!
heatmap<- heatmap.2(cor.matrix,scale="none",Rowv=NA,Colv=NA,col=rainbow,margins(5,5),cexRow=0.5,cexCol=1.0,key=TRUE,keysize=1.5,trace="none")
這聽起來像功課,而且你還沒有在數據上顯示代碼或'str()'的輸出。 –
嗨迪文!我很抱歉,我不知道論壇規則...這些是我跑的命令:> row.names(otu.tab1)< - otu_tab1 $ Taxon > row.names(otu_tab1)< - otu_tab1 $分類單元 >暗淡(otu_tab1) [1] 134 54 > otu_tab1 <-otu_tab1 [,2:54] > otu_tab1_mat <-as.matrix(otu_tab1) 這是STR()的輸出:> STR( [1:134,1:53]「0.0083825900」「0.0000000000」「0.0000000000」... ... - attr(*,「dimnames」)= 2列表中的 .. $:chr [1:134] 「Root; Other; Other; Other」「氯黴素菌; f__」「Solibacteres; f__Solibacteraceae」「Actinobacteria;其他」... .. $:chr [1:53]「NO8.4」「NO6.1」「NO7 .3「」NO9.4「... –
Noooooo。編輯你的問題。請進一步閱讀使用本網站的說明。 –