CODEWITHSUNDEEP
javascriptjqueryarraysundefined
beta
beta

Reputation: 5666

why is array undefined?

when executing the following code firebug tells me: values[this.geo.value] is undefined what is the problem?

$.get('./RDFexamples/tin00089_test2.rdf', null, function (rdfXml) {
var rdf, json = {};
var values = new Array();

rdf = $.rdf()
    .load(rdfXml)
    .prefix('', 'http://ontologycentral.com/2009/01/eurostat/ns#')
    .prefix('qb', 'http://purl.org/linked-data/cube#')
    .prefix('rdf', 'http://www.w3.org/1999/02/22-rdf-syntax-ns#')
    .prefix('dcterms', 'http://purl.org/dc/terms/')
    .prefix('sdmx-measure', 'http://purl.org/linked-data/sdmx/2009/measure#')
    .where('?observation a qb:Observation')
    .where('?observation dcterms:date ?date')
    .where('?observation sdmx-measure:obsValue ?measure')
    .where('?observation :geo ?geo')
    .each(function () {
        values[this.geo.value].push(this.measure.value);
        //alert(this.date.value)
        //alert(this.measure.value)
        //alert(this.geo.value)
    }
    );
    alert(values);
});

Upvotes: 2

Views: 7447

Answers (2)

Not Available
Not Available

Reputation: 3355

values[this.geo.value] is never initialized so you can't do .push because values[this.geo.value] is undefined, you first need to create an array in values[this.geo.value] before you can push things into it.

Pseudo-code example

if values[this.geo.value] == undefined {
    values[this.geo.value] = []
}
values[this.geo.value].push(...)

Upvotes: 3

Lee D
Lee D

Reputation: 12931

push is a method of the Array object itself - you are calling it on a value within the Array (which has probably not been set, hence 'undefined'). It's unclear what this.geo.value is, but assuming its the index of the array item you are trying to set, your options are:

values.push(this.measure.value);

or

values[this.geo.value] = this.measure.value;

Upvotes: 2

Related Questions