ok. I'm pretty sure it would be possible with TV, but it would require a little bit of coding. TV uses pinescript language and I think you can do that in the free version. Download it and have a look. At the bottom of the pane you will see a tab "pine editor". Write your code there and plot it. If you need help, you'd need to ask in the chat room. If a request is simple, someone will do it for you. I think it would be pretty straight forward request.