On 31 Dec 2007, at 22:53, David Huynh wrote:
>> ..
>> Anyway, the point is that the phenotype properties are categorized
>> and I want to enable filtering of my collection of phenotype methods
>> based on those categories. Examples: Alzheimers disease is a
>> neuro-degenerative disease and so is Parkinsons disease, and prostate
>> and breast cancer both fall in the category of 'cancer'. I was
>> able to
>> make this work in a facet for filtering the methods, but only after
>> artificially tagging each method with both the property itself AND
>> the
>> root-level property (see json data below). The problem was that if
>> there is no method linked to a given property directly (like 'cancer'
>> ) it will not show up in the facet. This solution does come with a
>> caveat, however: if I want to show the PhenotypeProperty property
>> in a
>> table or lens, the methods each have 2x values :! See attached
>> screenshot.
> So I presume my code does what you want in this case? Have you
> tried to
> remove "Eye disease" from the "amdstat" item and see if "Eye disease"
> still has a count of 2 in the facet?
It does keep the count of 2 if I do this.
>
>> Alternatively, I got the intended result without the trick above IF
>> I made my view show the actual properties themselves (i.e. the facet
>> expression was 'value'). But the tabular view and other views I want
>> to make are in fact based on the method items themselves so this
>> solution makes certain things difficult.
> Let's keep the view you want and make the facet cooperate. I
> understand
> that some parts of Exhibit are still not expressive/powerful enough
> that
> sometimes you have to use tricks to get around them. Please do let me
> know and we'll try to figure it out.
>
>> Comparing this with your photo example: it's as if you didn't have
>> any photos tagged with 'nature' directly, but would still like to see
>> the 'nature' root node in your tree.
> Correct. In the JSON file
>
> http://mire.environmentalchange.net/~webmaster/HierarchicalFacets/
> data.json
> the photo "Storm over the Chocolate Hills" is only tagged with "hill",
> but it still counts toward "landscape" and "nature".
Right, but that´s only because you have several other photos tagged
with "nature".
>
>> Is there any way to somehow make the hierarchical facet aware of
>> 'unused' tags, and display them in the tree as well? Or would that
>> fundamentally break things ? Some way to state in the facet-config
>> that I want to use all of the interlinked items in collection X
>> (properties) to filter the items in collection Y (methods)?
> I see... you mean you want to show the whole tree of properties
> whether
> or not each node has any associated method. So, you will get a lot of
> zero counts once you start filtering other facets. This is certainly
> doable. But I'd like to understand more your motivation for wanting to
> see those zero counts. Is it so that the facet doesn't change too
> much,
> causing you to lose visual context?
I'm not interested in seeing the zero counts per se, but rather in
seeing the full path down to given leaf node in the graph. So yes,
the visual context is key. This behaviour might perhaps be a
configurable option for the facet??
Mummi (Gudmundur)
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