Re: [gate-users] determining a feature of annotations

[Danica D. <d.d...@dc...>]

It should return String. Check your spelling.
Do you get any exceptions?

I've just tested this part and works fine:

    AnnotationSet testAnn = document
        .getAnnotations().get("Token");
        for (Annotation ann:testAnn){
            Object category = ann.getFeatures().get("category");
            System.out.println("category returns: "+category.getClass());
            System.out.println("category is: "+(String)category);
        }

The output is:
category type: class java.lang.String
category is: NN
category type: class java.lang.String
category is: VBP
....

danica

ch...@ha... wrote:
> Danica,
>
> Thanks,
>
> but what is the 
> map.get("category");
>
> supposed to return? I cannot cast this Object to a String
>
> Thanks,
>
> Chris
>
> ----- Original Message -----
> From: Danica Damljanovic <D.D...@dc...>
> Date: Tuesday, August 28, 2007 12:44 pm
> Subject: Re: [gate-users] determining a feature of annotations
> To: ch...@ha...
> Cc: gat...@li...
>
>   
>> To get all annotations of type token you do something like:
>> AnnotationSet annotations = document
>>                .getAnnotations().get("Token");
>>
>> than to acces the features:
>> for (Annotation ann:annotations){
>> FeatureMap map = ann.getFeatures();
>> String catFeature = map.get("category");
>> //check whatever you need here
>> }
>>
>> If you need the list of all features, you can list keys of the 
>> variable 
>> map in the example, and then get the values one by one.
>>
>> HTH,
>> Danica
>>
>>
>> ch...@ha... wrote:
>>     
>>> Hello,
>>>
>>> I have build an application, saved it, and am able to call it 
>>>       
>> from java
>>     
>>> using the basic batch processing sample.   Some of my PR add pos 
>>>       
>> types> to features for each token.  Does anyone have any sample 
>> code to check
>>     
>>> each annotation to see what features it contains and see what the 
>>>       
>> value> of a certain feature is. IN my case I want to see if the 
>> "category"> feature of the Token annotations is a verb type.
>>     
>>> Thanks,
>>> Chris
>>>
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