faq 301596674

How to define/read custom person attributes?

by Nirmeen on 2018-07-11 15:30:11

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I would like to add custom attribute(s) to person object and be able to read/access it.
I added "income" as an attribute to population_v6,dtd and plans.xml as shown below, however i am not sure what is the correct way to define and read/access it. Can you please advise.

<!ELEMENT person         (attributes?,plan*)>
 <!ATTLIST person
           id             CDATA                    #REQUIRED
           car_avail      (always|never|sometimes) #IMPLIED
           employed       (yes|no)                 #IMPLIED
 	  income 		 CDATA 		 #IMPLIED>

<?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE population SYSTEM "resources\dtd\population_v6.dtd">

 <population>

 <!-- ====================================================================== -->

 	<person id="1" car_avail="always" employed="yes" income="1750">
 		<plan score="104.84298221603848" selected="yes">
 			<activity type="h" link="263254491_34027699" x="4625652.386267886" y="5830739.079902429" end_time="13:33:00" >
 			</activity>
 			<leg mode="pt" dep_time="13:33:00" trav_time="01:24:13">
 				<route type="generic" start_link="263254491_34027699" end_link="29364027_29364041" trav_time="01:24:13" distance="32390.67598449947"></route>
 			</leg>
 		</plan>

 	</person>

 <!-- ====================================================================== -->

 </population>
 

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Comments: 4

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Re: How to define/read custom person attributes?

by Johan W. Joubert on 2018-07-11 15:44:17

Hi Nirmeen, I'm not quite sure what the first snippet is you supplied. You cannot (or should not) change the dtdfile. That's fixed. It indicates that a Person may (but need not, hence the ?) have one or more attributes.

In my mind the correct way of giving a person attributes - depending on what version of MATSim you're using - is something along the following lines (programatically).

Scenario sc = ScenarioUtils.createScenario(ConfigUtils.createConfig()); 
 Person person = sc.getPopulation().getFactory().createPerson(Id.createPersonId("1")); 
 person.getAttributes().putAttribute("car_avail", "always"); 
 person.getAttributes().putAttribute("employed", "yes"); 
 person.getAttributes().putAttribute("income", 1750);  
 sc.getPopulation().addPerson(person);

If you write that population out, you should be able to see what the XMLversion of the attributes look like.

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Re: How to define/read custom person attributes?

by Nirmeen on 2018-07-11 15:53:13

Hi Johan,

Thank you for your response.

The version in pom.xml is 0.11.0-SNAPSHOT.

I was wondering, if there is a way to read it directly from plans.xml file.

<?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE population SYSTEM "\resources\dtd\population_v6.dtd">

 <population>

 <!-- ====================================================================== -->

 	<person id="1" car_avail="always" employed="yes" income="1750">
 		<plan score="104.84298221603848" selected="yes">
 			<activity type="h" link="263254491_34027699" x="4625652.386267886" y="5830739.079902429" end_time="13:33:00" >
 			</activity>
 			<leg mode="pt" dep_time="13:33:00" trav_time="01:24:13">
 				<route type="generic" start_link="263254491_34027699" end_link="29364027_29364041" trav_time="01:24:13" distance="32390.67598449947"></route>
 			</leg>
 		</plan>

 	</person>

 <!-- ====================================================================== -->

 </population>

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Re: How to define/read custom person attributes?

by Nirmeen on 2018-07-11 16:08:04

Thank you for your response.

The MATSim version is 0.11.0-SNAPSHOT.
I was wondering if there is a way to read it directly from plans.xml, since there will be multiple person objects in the population

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Re: How to define/read custom person attributes?

by Nirmeen on 2018-07-11 16:23:44

Thank you for your response.

The MATSim version is 0.11.0-SNAPSHOT.

I am a bit confused in which class should this initialization be done. i was also wondering if we can read the person object directly from plans.xml file since there might be multiple person objects.