how to pivot longer without adding a new column or modifying data ? the table has 182 columns !

[HanOostdijk]

I don’t really have enough info to help you out. Could I ask you to provide a minimal REPRoducible EXample (reprex)? A reprex makes it much easier for others to understand your issue and figure out how to help. A reprex consists of the minimal code and data needed to recreate the issue/question you’re having. You can find instructions how to build and share one here:

FAQ: What's a reproducible example (`reprex`) and how do I create one?

Why reprex? Getting unstuck is hard. Your first step here is usually to create a reprex, or reproducible example. The goal of a reprex is to package your code, and information about your problem so that others can run it and feel your pain. Then, hopefully, folks can more easily provide a solution. What's in a Reproducible Example? Parts of a reproducible example: background information - Describe what you are trying to do. What have you already done? complete set up - include any library() calls and data to reproduce your issue. data for a reprex: Here's a discussion on setting up data for a reprex make it run - include the minimal code required to reproduce your error on the data…