On Tue, Oct 27, 2009 at 10:55 AM, all_thumbs wrote:
> Hi Dave,
>
> On Jul 22, 12:56 am, David Joyner wrote:
> ...
>> I'm not sure what you are going to do with yourfunction.
>> If it is just for plotting, say, I think you might just want to use
>>
>> def f(x,y):
>> if :
>> return
>>
> I'm doing numerical minimization on it right now and the only reason I
> want/need it to be a sage function is so I can .subs() real values for
> my parameters. To get around that, I'm just going to use global
> variables for my parameters. It's kind of ugly, but it will work. It
> would be
> I'm not sure what you are going to do with your function.
> If it is just for plotting, say, I think you might just want to use
>
> def f(x,y):
> if :
> return
> if :
> return
> etc
I'm doing numerical minimization on it right now and the only reason I
want/need it t
On Tue, Jul 21, 2009 at 6:08 PM, Doug wrote:
>
>> Piecewise functions of 2 variables are not yet implemented.
>> Sorry.
>
> Ah, I see. If there was were primitive functions for LessThan(x,y),
> Equal(x,y), and GreaterThan(x,y), and they returned 0 or 1, I think
> that's all I would need:
>
> f(x,
> Piecewise functions of 2 variables are not yet implemented.
> Sorry.
Ah, I see. If there was were primitive functions for LessThan(x,y),
Equal(x,y), and GreaterThan(x,y), and they returned 0 or 1, I think
that's all I would need:
f(x,y) = y + LessThan(x,pi/2)*f1(x) + Equal(x,pi/2)*f2(x) + Gre
On Tue, Jul 21, 2009 at 5:35 PM, Doug wrote:
>
>> Are you aware of the function piecewise(), which seems to do what you
>> want? If there is a problem with using it, what is it?
>
> I wasn't aware of piecewise(), and although it doesn't seem as elegant
> or flexible as being able to use Indicator
> Are you aware of the function piecewise(), which seems to do what you
> want? If there is a problem with using it, what is it?
I wasn't aware of piecewise(), and although it doesn't seem as elegant
or flexible as being able to use Indicator functions in my function
definitions, I think it sho
Are you aware of the function piecewise(), which seems to do what you
want? If there is a problem with using it, what is it?
M. Hampton
On Jul 21, 12:34 pm, Doug wrote:
> I'm trying to do something that seems very simple but isn't working.
> Hence the post here :)
>
> I want to define a very s
