I would like to download list of Heatmap.
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2.3 years ago

Hi, I have made successfully a heatmap of gene expression comprising of about 600 genes. The 600 genes were clustered and the order is changed from input data list. In the heatmap, I can't see the order because the 600 gene names are overlapped. Now I would like to see or download the new list of the genes in excel or text. Kindly let me know how to do it. Thanks!^^

gene rna-seq RNA-Seq SNP R • 458 views
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Which heatmap function did you use? This is important. For example, here is how to do it with pheatmap: A: extract dendrogram cluster from pheatmap

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Thanks for your reply. I used the script as below.

heat2<-heatmap.2(as.matrix(Shoot2), density.info="none", scale="row", trace="none", dendrogram="row", Rowv=T, Colv=FALSE,cexRow=1, col=myPalette, margins=c(11,24))

And I followed the script which you attached, I don't get anything.

    rownames(Shoot2[heat2$tree_row[["order"]],])

character(0)
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I used the heatmap.2 as below.

heat2<-heatmap.2(as.matrix(Shoot2), density.info="none", scale="row", trace="none", dendrogram="row", Rowv=T, Colv=FALSE,cexRow=1, col=myPalette, margins=c(11,24))

I got it using below.

colnames(dat)[out$colInd]

I can get the list only. How can I get all the matrix according to the list? I copied and pasted the list to excel and get the matrix data from the original file using v-lookup. It took a while for re-arranging the list from R to one column of excel. Thanks!!!

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Okay, cool, so, everything is now okay?

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Thanks. it is getting better.

However I can get the list only. How can I get all the matrix according to the list?

I copied and pasted the list to excel and get the matrix data from the original file using v-lookup. It took a while for re-arranging the list from R to one column of excel.

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You mean to re-order the data matrix based on the indices? The indices relate to your original matrix. So, you should be able to do something like:

dat[,out$colInd]
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