Ronald Robertson

Sanjay Singh

Scientist/Writer
  • Emailsanjaysingh765@gmail.com
  • Socail@lampatlex
  • VisitorSince 1982
  • LocationKentucky, USA



How to get gene expression value from Arrayexpress




ArrayExpress has a wonderful R package for data search, download and analysis but it doesn't always work in perfection. Therefore it always good to have an alternative to download the raw data/CEL and analyze it. This R script will simply take the accession number in command line argument and save the expression data in a file named as  Gene_expression.txt.


How to download expression data set from NCBI GEO HERE




Prerequisite 




We need the following R libraries to run the script


  • ArrayExpress 

  • aff



Uses 





Rscript script_name accession_number



Limitations 




  • This script is written specifically for Arabidopsis data sets, therefore, you have to modify it as per your requirement. 






Script 









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