Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
If your overall objective is to modify an EPW file, one possibility that might be easier is to work with is to use the Elements weather file processor. As a disclaimer, I am one of the developers of Elements. Elements is free and open-source software.
The tool allows you to directly open an EPW file, make your changes, and save the file again.
You can find more information here:
http://bigladdersoftware.com/projects/elements/
Hope that helps.
