layerDefinitions problem

Question

Does anyone know why this doesn't work:

var imageParameters = new esri.layers.ImageParameters();
var layerDefs = [];
layerDefs[1] = "vdate='2012/04/26-00Z'";
imageParameters.layerDefinitions = layerDefs;
imageParameters.layerIds = [1];
imageParameters.layerOption = esri.layers.ImageParameters.LAYER_OPTION_SHOW;
imageParameters.transparent = true;
lyr = new esri.layers.ArcGISDynamicMapServiceLayer("http://www.ncddc.noaa.gov/arcgis/rest/services/Models/NWS_AirTempForecasts/MapServer", {"imageParameters":imageParameters,"opacity":0.90});
map.addLayer(lyr);

If I go to the REST service for this map and to the query page of this particular layer, I can enter the vdate string of 2012/04/26-00Z and get a result.  But if I try to use the layerDefinitions option, I get no results.

BetsySchenck-Gardner · Answer

Thanks Derek.  That fixed it.  Didn't realize there were all those empty spaces since you don't see them when you bring the layer up in ArcMap.

derekswingley1 · Answer

I think your code is correct but the underlying data in that service is a little wonky. If you do where 1=1, you see the vdate come back with lots of spaces: { "displayFieldName": "vdate", "fieldAliases": { "vdate": "vdate" }, "fields": [{ "name": "vdate", "type": "esriFieldTypeString", "alias": "vdate", "length": 25 }], "features": [{ "attributes": { "vdate": " 2012\/04\/26-00Z" } }, { "attributes": { "vdate": " 2012\/04\/26-00Z" } }, { "attributes": { "vdate": " 2012\/04\/26-00Z" } } I got it work at the REST endpoint with vdate like '%2012/04/26%' Here's a request that uses that: http://www.ncddc.noaa.gov/arcgis/rest/services/Models/NWS_AirTempForecasts/MapServer/1/query?text=&geometry=&geometryType=esriGeometryEnvelope&inSR=&spatialRel=esriSpatialRelIntersects&relationParam=&objectIds=&where=vdate+like+%27%252012%2F04%2F26%25%27&time=&returnCountOnly=false&returnIdsOnly=false&returnGeometry=false&maxAllowableOffset=&outSR=&outFields=&f=html You might post this question over the in REST forum to see if someone over there has any additional input. Edit: Here's a working page: