Thank you for your help.
So my basic goal is to be able to perform operations on the individual and
population level. In this case, population.infected would return an
Array{Int64,1} indicating which individuals in the population are infected.
For example, population.infected[1] = 1 would indicate the first
individual is infected. Something like mean(population.infected .== 1)
would indicate the percentage infected in the population. Similarly, if I
queried population[1], this would allow me to inspect all of the properties
assigned to individual 1.
Does that make sense?
On Saturday, June 4, 2016 at 10:26:52 AM UTC-4, Ford Ox wrote:
>
> Could you please specify what should population.infected return? Could you
> provide an interface?
>
> Right now it seems like you want something like this:
>
> type Individual end
>
> type Population
> individuals::Vector{Individual}
> end
>
> setindex!(p::Population, i::Individual, index...) = p.individuals[index
> ...] = i
> getindex(p::Population, index) = p.individuals[index]
> infected(i::Individual) = i.infected
> vaccinated(i::Individual) = i.vaccinated
>
> Usage:
> population[index] = Individual() # set new individual
> infected(population[index]) # gets the infected property of
> individual at index
> vaccinated(population[index]) # ...
>
> But you don't really need functions for these things...
>
>
> On Saturday, June 4, 2016 at 2:19:02 PM UTC+2, Christopher Fisher wrote:
>>
>> I was wondering if someone would be willing to help me with creating
>> user-defined types. I've been using Julia for about two years now but I am
>> new to the idea of creating custom types. I'm trying to create a population
>> of agents/individuals in a simple epidemiological simulation. I would like
>> the population of individuals to be structured as a 2 dimensional array
>> with rows as individuals and columns as properties. This would be somewhat
>> similar to a DataFrame, but potentially more flexible. I want to be able to
>> index an individual like so: population[1]. This woud list all of the
>> information for individual 1. I would also like to be able to look at an
>> attribute across individuals: population.infected or population[:infected].
>> At the same time, I would like to have to flexibility of using an array to
>> keep track of individuals: typeof(population.history[1]) is Array{Int64,1}.
>> Based on existing documentation and examples, I have only been able to
>> create individuals but cannot figure out how to create a population as
>> described above:
>>
>> type Person
>> infected::Int64
>> vaccinated::Int64
>> dead::Int64
>> history::Array{Int64,1}
>> end
>>
>> Any help would be greatly appreciated.
>>
>
