ArcGIS.com Map: suporte a rótulos de campos de data?

Question

Tenho um serviço de feições hospedado no ArcGIS.com e adicionado a um mapa da web do ArcGIS.com.  Quando peço para criar rótulos, o campo de data dos meus atributos não aparece como opção de seleção.

É possível criar rótulos para o campo de data ou apenas para campos de texto?

Dan

RomanChueh · Answer

Thanks Kelly.

I am consuming my WebMap in a Javascript app, and it appears I have an option is to do client-side labeling using labelingInfo with LabelClass or a LabelLayer, but similar to ArcGIS Online, both methods display the Date part of the date_time field.  Do you have any suggestion or work around for labeling client-side Javascript app?

Regards,

Roman

// Label Class

var labelClass = new LabelClass({
  labelExpression: '[date_time]',       <=  no REST API formatting of label?
  labelPlacement: 'always-horizontal',
});

var labelingInfos= []

labelingInfos.push(labelClass)

layer.setLabelingInfo(labelingInfos);

// Label Layer

var textColor = new Color("red");

var textLabel = new TextSymbol().setColor(textColor);

textLabel.font.setSize("14pt");

textLabel.font.setFamily("arial");

textLabelRenderer = new SimpleRenderer(textLabel);

var labels = new LabelLayer({

id: "labels"

});

labels.addFeatureLayer(layer, textLabelRenderer, "${date_time}");   <= no info windows template date formatting?

map.addLayer(labels);

KellyGerrow · Answer

Hi Roman,

Currently this functionality is not available in ArcGIS Online.

RomanChueh · Answer

Hi Kelly,

I am having a similar issue as Dan, and I have manually type in the DateTime field name in the create labels Text box, as you have suggested.  But, the label only display the Date value and not the Time value, example: only 5/1/2015 display in the label for datetime value 5/1/2015 10:00:00.  How do I format the DateTime value to have it display correctly?

Thanks,

Roman