[ADMB Users] df1b2variable/prevariable operator

[Mollie Brooks]

Is this information documented anywhere? It's not in the RE manual.


On 11 Jul 2011, at 2:16 PM, Weihai Liu wrote:

> As I know, df1b2variables for random effect model, any variable defined in parameter_section by default use df1b2variables. 
> 
> for non random effect, any variable in parameter_section refer to prevariable. So I don't think regular user will have a chance to use both of them at the same time in admb. 
> 
> I have not check the source code about df1b2variables class, not sure what is the relation between df1b2variables and prevariable. It is just my initial thought. I could be wrong.
> 
> weihai 
> 
> On Mon, Jul 11, 2011 at 2:02 PM, Mollie Brooks <mbrooks at ufl.edu> wrote:
> I'm writing a library and overloading the function with all combinations that I think a novice user might attempt to do. 
> What's wrong with mixing prevariables and df1b2variables? Isn't this what happens in the procedure section anyway?
> -Mollie
> 
> 
> 
> On 11 Jul 2011, at 1:59 PM, Weihai Liu wrote:
> 
>> can you change your b as df1b2variable, is there a reason you must define b as prevariable? I would try not to  mix them.
>> 
>> weihai
>> On Mon, Jul 11, 2011 at 1:48 PM, Mollie Brooks <mbrooks at ufl.edu> wrote:
>> There seems to be no operator defined for dividing a df1b2variable by a prevariable. Should I create a new df1b2variable and set it equal to the prevariable denominator?
>> 
>> Will this operator eventially get defined? Should I add it as a feature request?
>> 
>> thanks,
>> Mollie
>> 
>> Details...
>> This is the function I'm trying to write:
>> 
>> df1b2variable Michaelis_Menten1(const double& x,  const df1b2variable& a,  const prevariable& b)
>> {
>>    RETURN_ARRAYS_INCREMENT();
>>        df1b2variable y;
>>        y=a*x/(b+x);
>> 
>>        RETURN_ARRAYS_DECREMENT();
>>    return (y);
>> }
>> 
>> When I try to use it, I get the following error
>> 
>>  In function 'df1b2variable Michaelis_Menten1(const double&, const df1b2variable&, const prevariable&)':
>> ./Michaelis_Menten1.cpp:62: error: no match for 'operator/' in 'operator*(const df1b2variable&, double)(x) / operator+(((const prevariable&)((const prevariable*)b)), x)
>> 
>> I believe the relevant candidates are:
>> 
>> df1b2variable operator/(double, const df1b2variable&)
>> df1b2variable operator/(const df1b2variable&, double)
>> df1b2variable operator/(const df1b2variable&, const df1b2variable&)
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>> 
>> 
>> -- 
>> Weihai Liu
>> ~~~~~~~~~~~~~~~~~~~~~~~~
>> Quantitative Fisheries Center
>> Department of Fisheries & Wildlife
>> Michigan State University
>> 153 Giltner Hall
>> East Lansing, MI 48824
>> Phone: 517-355-0126
>> Email: liuweih at msu.edu 
>> ~~~~~~~~~~~~~~~~~~~~~~
> 
> 
> 
> 
> -- 
> Weihai Liu
> ~~~~~~~~~~~~~~~~~~~~~~~~
> Quantitative Fisheries Center
> Department of Fisheries & Wildlife
> Michigan State University
> 153 Giltner Hall
> East Lansing, MI 48824
> Phone: 517-355-0126
> Email: liuweih at msu.edu 
> ~~~~~~~~~~~~~~~~~~~~~~

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