Order Add args when printing latex

[Paul Royik]

Hello.

Is it possible to render cos ^2 (x)- sin ^2 (x) as "cos ^2 (x)- sin ^2 (x)", not "- sin ^2 (x)+cos^2(x)"? I want terms with negative sign be last.

I've discovered that there is def _print_Add(self, expr, order=None):

How should order be specified?

[Oscar Benjamin]

There is an order argument to init_printing but it probably doesn't do
what you want. You can set it to None though and then manually set the
order of the terms in the expression:

In [13]: init_printing(order='none')

In [14]: Add(y, x, evaluate=False)
Out[14]: y + x

--
Oscar

[Paul Royik]

Thank you very much for the response.

Is there any other ways without evaluate=False?

What about def _parse_order(cls, order): function?

Can I specify a custom order?

[Oscar Benjamin]

On Sat, 21 Jan 2023 at 15:24, Paul Royik <distan...@gmail.com> wrote:
>
> Thank you very much for the response.
> Is there any other ways without evaluate=False?
> What about def _parse_order(cls, order): function?
> Can I specify a custom order?

I don't think anything like this is possible but it would be good to
add something like this. I think it's quite common that people don't
like the ordering used by the printers. Personally I think that
order='none' should at least be the default.

--
Oscar

[Paul Royik]

Thank you very much!