4.5 Export data

To conclude this section, export the data out of R as a comma separated file (csv). This can them be opened in other data processing applications, or reloaded back into R at a later stage for further analysis. At this time, it would also be a very good idea to save your markup document (which you should have been doing regularly anyway), and save the R workspace so that next time we need to use this data, you can load all the objects from file rather than having to rebuild them again.

1. Use the write.csv() or write.table() function to export the data matrix to a csv file. Repeat for the gene names.

2. Save your R notebook and knit your document if you have not done so recently.