Topic: atan2

I have been using Graph for several years.

It is an incredibly useful software. 

I have one major request that would substantially widen its usefulness for me :

Please implement the atan2(y,x) function.

Using atan(y/x) is NOT a work-around for this, because of domain issues.

Thank you !!

Re: atan2

Sorry for the delayed response. I have been a little busy.

You can add atan2 as a custom function in the Function|Custom functions/constants dialog:
atan2(y,x) = if(x>0, atan(y/x), y>0, pi/2 - atan(x/y), y<0, -pi/2 - atan(x/y), x<0, atan(y/x) + pi)

Alternatively if you don't want to add it every time you need it, you can create it in a plugin. I have attached a pugin that defines the atan2 function. You can install it with the Plugin Manager in the beta version of Graph 4.5.

Post's attachments

Attachment icon atan2.py 229 b, file has never been downloaded.