How to use I/O API to add variable values from two files？
Do you mean “Create a file which contains variables taken from two files”? For that, use I/O API M3TOOLS program m3merge, which is documented at https://cjcoats.github.io/ioapi/M3MERGE.html and https://www.cmascenter.org/ioapi/documentation/all_versions/html/M3MERGE.html.
Or do you mean “Do arithmetic operations on variables taken from two files”? For that, use m3diff, which is documented at https://cjcoats.github.io/ioapi/M3DIFF.html and https://www.cmascenter.org/ioapi/documentation/all_versions/html/M3DIFF.html**
Carlie J. Coats, Jr., Ph.D. I/O API Author/Maintainer Senior Software Engineer firstname.lastname@example.org UNC Institute for the Environment www.ie.unc.edu 100 Europa Dr., Suite 490 / Campus Box 1105 Tel 919.843.5951 Chapel Hill, NC 27599-1105 Fax 919.966.9920
Thank you for your help!