[FLR-list] [FLR-devel] length

[Laurie]

Think it would make sense to have a specific class inherited from FLPar 
for length.

Laurie

On 14/05/13 15:05, Iago Mosqueira wrote:
>
>
> On 05/13/2013 05:51 PM, Laurie Kell wrote:
>> maybe allowing param dim to be named len in FLPar, as is allowed for
>> quant and age in FLQuant may be all that is needed.
> Right now the validity only checks that last dim is iter
>
> validFLPar <- function(object) {
>
> 	# Last dimension is called 'iter' ...
>    if(names(dimnames(object))[length(dim(object))] != "iter")
>      return("last dimension must be named 'iter'")
>    # ... and the first 'params'
>
> 	return(TRUE)
> }
>
> So len will work, let's see which methods fail. But maybe for an
> specific type of information like this it would make more sense to have
> a class based on FLPar, with appropriate validity checks and specific
> methods. You could then dispatch on it any ALK method
>
>
> Iago
>
>>
>> On Mon, May 13, 2013 at 9:09 AM, Laurie <lauriekell at googlemail.com
>> <mailto:lauriekell at googlemail.com>> wrote:
>>
>>      Thanks, I worked with Alberto Murta and José Francisco Loff to
>>      implement ALKr which is on CRAN. There are some method for
>>      simulation, e.g. to generate size from length and growth paramters
>>      and also to simuate ALKs and LFDs, that will be in the next release.
>>      I am thinking about how to store ALKs and length data in FLR and for
>>      methods to work on them.
>>
>>      Laurie
>>
>>
>>
>>
>>      On 13/05/13 07:56, Ernesto wrote:
>>
>>          HI,
>>
>>          I'm about to start looking at it. My idea is to develop a method to
>>          convert length to ages using vB (or other) to feed the a4a stock
>>          assessment method. Still working on the details but I want to use vB
>>          parameters and their uncertainty to introduce uncertainty on the
>>          FLStock
>>          object and run the model for each iteration. Kind of operating model
>>          approach.
>>
>>          I've done something similar for setting up M. It's all based on
>>          a new
>>          FLModelSim class (in dev now).
>>
>>          You can take a look at it using the prototype. Source this one
>>          https://raw.github.com/__ejardim/a4a/master/packages/__FLa4a/R/FLSimpleModel-class.R
>>          <https://raw.github.com/ejardim/a4a/master/packages/FLa4a/R/FLSimpleModel-class.R>
>>          and the new M class for a4a is here
>>          https://raw.github.com/__ejardim/a4a/master/packages/__FLa4a/R/a4aM-class.R
>>          <https://raw.github.com/ejardim/a4a/master/packages/FLa4a/R/a4aM-class.R>
>>          , there's some examples.
>>
>>          Best
>>
>>          EJ
>>
>>          On 05/10/2013 11:09 AM, Laurie wrote:
>>
>>              Hi
>>
>>              I am working on length and age data as part of linking the
>>              ALKr package
>>              and FLR.
>>
>>              I was going to propose to use FLPar to add the length dim.
>>
>>              Has anybody done anything with length, i.e. methods, data
>>              classes etc....
>>
>>              Laurie
>>
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>>
>>
>>
>>
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