Latest Contributions by CharlesGant

I have a series of layers that are loaded via CSV on my local server.  The code below is repeated for each layer.  However, for whatever the reason the layer graphics get hung up on the screen and cannot be cleared until the whole page is refreshed.  I have tried building a function to clear or remove the layers before the refresh but that does not seem to work either.  It seems to be tied to the CSV data being updated, which is done via a local CRON every five minutes.  For testing, I have opened the CSV and changed on points' value, and it seems to hang for sure at that point.  Thoughts?    function csv60minfunc () {    csv60min = new CSVLayer("symGSPHydroViewer/data/60query.csv",{id:"csv60min"});    csv60min.refreshInterval = 0.1;    csv60min.on("update-end", function(results){    csv60mintextLayer = new GraphicsLayer();                  arrayUtils.forEach(results.target.graphics, function(feature, index){    var lid =  feature.attributes.lid;    var name =  feature.attributes.name;    var value = feature.attributes.value;    var ffg = feature.attributes.ffg;    var ratio = feature.attributes.ratio;    var validtime = feature.attributes.obstime;    var attr = {"Location ID":lid,"Location Name":name,"Obs Value":value,"FFG":ffg,"Ratio of FFG":ratio,"Obs Valid Time":validtime};                                                                             var geom = feature.geometry;    var displayText = feature.attributes.value;    var font = new Font("12pt",Font.STYLE_NORMAL, Font.VARIANT_NORMAL,Font.WEIGHT_BOLD,"Helvetica");    var textSymbol = new TextSymbol(displayText,font,new Color("#FF0000"));      csv60mintextLayer.add(new Graphic(geom, textSymbol, attr));});                      var infoTemplate = new InfoTemplate("Attributes", "${*}");      csv60mintextLayer.setInfoTemplate(infoTemplate);    map.addLayer(csv60mintextLayer);    csv60mintextLayer.hide();    });                              var blank = new Color([0, 0, 0, 0]); // hex is #ff4500    var marker = new SimpleMarkerSymbol("solid", 0, null, blank);    var renderer = new SimpleRenderer(marker);    csv60min.setRenderer(renderer);    map.addLayer(csv60min);    csv60min.hide();    } ... View more

Specifically with CSV Layers, how does the API handle refreshing CSV Layers when the map is open?  I have been trying to make this work for sometime now and I cant pin down why I have been unsuccessful.  I have a series of CSV Layers that I create upon initialization of the map.  Those layers obviously reference CSV files on my local server.  Those CSV files update every five minutes with new data.  Thus, I need the map to update all the CSV layers (visible or not) at that time.  I have tried using the refreshInterval option, but with no luck.  Sample code is below. //Add Observed Precip CSV Layers function csv30min () { csv30min = new CSVLayer("symGSPHydroViewer/data/30query.csv",{id:"csv30min"}); csv30min.refreshInterval = 0.1; csv30min.on("update-end", function(results){     csv30mintextLayer = new GraphicsLayer();                        arrayUtils.forEach(results.target.graphics, function(feature, index){         var lid =  feature.attributes.lid;         var name =  feature.attributes.name;         var value = feature.attributes.value;         var ffg = feature.attributes.ffg;         var ratio = feature.attributes.ratio;         var validtime = feature.attributes.obstime;         var attr = {"Location ID":lid,"Location Name":name,"Obs Value":value,"FFG":ffg,"Ratio of FFG":ratio,"Obs Valid Time":validtime};         var geom = feature.geometry;         var displayText = feature.attributes.value;         var font = new Font("12pt",Font.STYLE_NORMAL, Font.VARIANT_NORMAL,Font.WEIGHT_BOLD,"Helvetica");         var textSymbol = new TextSymbol(displayText,font,new Color("#FF0000"));                                csv30mintextLayer.add(new Graphic(geom, textSymbol, attr));});                            var infoTemplate = new InfoTemplate("Attributes", "${*}");            csv30mintextLayer.setInfoTemplate(infoTemplate);     map.addLayer(csv30mintextLayer);     csv30mintextLayer.hide(); });                                var blank = new Color([0, 0, 0, 0]); // hex is #ff4500 var marker = new SimpleMarkerSymbol("solid", 0, null, blank); var renderer = new SimpleRenderer(marker); csv30min.setRenderer(renderer); map.addLayer(csv30min); csv30min.hide(); } ... View more

I'm trying to incorporate the following link, into the following code and cant figure it out.  Have made various attempts but am unsure of where exactly to place the link. Info Layer link: nowCOAST Layer Info Retrieval‌    var layers = new WMSLayerInfo({});    var resourceInfo = {extent: new Extent(-126.40869140625, 31.025390625, -109.66552734375, 41.5283203125, {wkid: 4326}),layerInfos: [layers]};    var wmsWarnLayer = new WMSLayer('http://nowcoast.noaa.gov/wms/com.esri.wms.Esrimap/wwa?', {resourceInfo: resourceInfo,visibleLayers: ['WARN_SHORT_TOR','WARN_SHORT_SVR','WARN_SHORT_FLW','WARN_SHORT_FFW'],"visible":false, opacity:0.7});    wmsWarnLayer.version = "1.1.1";           map.addLayers([wmsWarnLayer]); ... View more

All, Is there a built in method or function within the API that when executed will return an array of currently visible layers? I have some functions written to refresh my map at certain time intervals, and also on command via a evt button.  I need to know which layers are currently visible before the refresh script runs so that I can turn them all back on.  You might be asking, why do they go off?  Well, they don't all go off, just certain csv layers.  I have 5 csv layers that are each created with a separate function.  Within the function, at the end is a .hide() command so that when the page is loaded the data is already created, but not visible.  Then the layer of choice is just turned on with another evt button.  However, if the user has one of these layers activated and the refresh function runs, which recreates the csv layers to populate new data (data is updated every five minutes), it will be invisible.  Thus, the need to know ahead of time which are visible so I can loop through them at the end of the refresh function to .show() them again.  Thanks! ... View more