hi all,
how to tell R that the row names is for instance certain column, when exporting files to r using read.csv file function ?
@Sinhdh: The point is that when you export tables to R, the first column should be named as column 0 (because this denotes the row names, and thus R will not look at it as a variable). However, what sometimes, happen is that R read the first column as column 1 (although it should be column 0, which you can see if you import any built-in data like Irisis), and thus consider it as variable. Then if you create a PCA or dMDS plots, then R will name the dots in the plots as numbers (e,g, 1, 2, 3, etc.) and not the exact row names (I think because it consider that col 1 is just a variable). Now what I want is to, while exporting the table, is to tell R that the first column is not a variable so that it gives it column 0 and not column 1, so when plotting it you will have the names of the rows on the dots in the plot. I think there is a function that can be added to the read.csv file, then define that the row names = ... ? should be column 1. DO you know this function
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