Latest Contributions by OwenEarley

I don't think this is possible solely within the REST API. Your original REST API query will return a featureset object, each feature within the featureset will have a geometry. However, the REST API does not seem to have any functions to get the extent of all feature geometries. This type of function is normally carried out by the client application. For example in the ESRI JS API you can use the client-side graphicsutils.graphicsExtent() method to get the extent of an array of graphics. ... View more

Why not just include the two original fields in the DBF as well as the concatenated ID value? If you have to do this in Excel you can use formulas: A B C 1 ExRock RockType1 RockType2 2 Andesite_Basalt Andesite Basalt 3 Basalt_Granite Basalt Granite ROCKTYPE1 =LEFT(A2,(FIND("_",A2) - 1)) ROCKTYPE2 =RIGHT(A2, LEN(A2) - FIND("_",A2)) Otherwise, if you are processing this within python then use split('_") as Kevin suggests. ... View more

EDIT: ?? - GeoNet was showing this with no answers until after I posted this. Not sure why but hope this helps anyway. Check the source code in this sample. Basically the sample takes a map click event and then creates 4 identify tasks 200m in each direction from the map click point.         ...            // Create multiple identify target points           pts = [];           pts.push(event.mapPoint.offset(0, 200));           pts.push(event.mapPoint.offset(200, 0));           pts.push(event.mapPoint.offset(0, -200));           pts.push(event.mapPoint.offset(-200, 0));           console.log(pts);                     // Create multiple identify tasks                    var tasks = [];           for (var i=0;i<pts.length;i++){             tasks.push(singleIdentifyTask(pts))           }         ...                  // this returns a single task (deferred)         function singleIdentifyTask(pt){           console.log("Creating Identify Task: ", pt);           identifyParams.geometry = pt;           return identifyTask.execute(identifyParams);                  } The code then runs the tasks within dojo/promise/all and processes the results when all tasks are completed:           // Run tasks           console.log("Running Tasks");           all(tasks).then(function(taskResults){                         map.graphics.clear();             for (var i=0;i<pts.length;i++){               map.graphics.add(new Graphic(pts, sms));             }                        // results will be an Array             console.log("Results", taskResults);             // example: add each result to map             for (var i=0;i<taskResults.length;i++){               var taskResult = taskResults;               for (var j=0;j<taskResult.length;j++){                              console.log(taskResult );                    map.graphics.add(new Graphic(taskResult .feature.geometry, sfs));               }             }             // show identify points on map             for (var i=0;i<pts.length;i++){               map.graphics.add(new Graphic(pts, sms));             }                       }); I have placed console.log statements so you can open a developer console and view the objects as they are being created or used. Hope this helps. Owen - SpatialXP ... View more

I haven't used ArcObjects via Java but I would be very surprised if the FeatureBuffer had not been implemented. ... View more

Did you end up getting a reduction in your total processing time? ... View more

Your operationalLayer is an ArcGISDynamicMapServiceLayer and this object does not have a setRenderer() method. You should use the setLayerDrawingOptions() method instead: require([   "esri/layers/LayerDrawingOptions", "esri/renderers/SimpleRenderer", ... ], function(LayerDrawingOptions, SimpleRenderer, ... ) {     var layerDrawingOptions = [];     var layerDrawingOption = new LayerDrawingOptions();     var sfs = new SimpleFillSymbol(                     "solid",                     new SimpleLineSymbol("solid", new Color([195, 176, 23]), 2),                     null                     );     layerDrawingOption.renderer = new SimpleRenderer(sfs);     // change 1 to the layer index that you want to modify:     layerDrawingOptions[1] = layerDrawingOption;     dynamicData.setLayerDrawingOptions(layerDrawingOptions);     ... }); ... View more

One thing that I can see is that you should flush the feature buffer at regular intervals. You code is adding all of the features to the feature buffer and then writing them only once at the end of the function. Try flushing the buffer at regular intervals for example (pseudo code only as I am not too familiar with Java): int i = 0; ... for(LineInfo lineInfo:coords) {     ...     cursor.insertFeature(featureBuffer);     c += 1;     if (c == 100){           // flush cursor and reset counter           cursor.flush();           c = 0;     } } // final flush for remaining features cursor.flush(); ... Hope this helps. ... View more

You can do this using the optional srcNodeRef parameter when constructing the scalebar - see this example. The trick is to place a div over the map and use it as the scalebar container. <style>       html, body { height: 100%; width: 100%; margin: 0; padding: 0; }       #map{padding:0;}       #scalebar-container{         position: absolute;         bottom: 10px;         left: 10px;        background-color: #fff;         width: 120px;         height: 30px;         z-index:1;         border: 1px solid #ccc;         padding: 10px;         border-radius: 12px;       } </style> … <div id="map" data-dojo-type="dijit/layout/ContentPane"      data-dojo-props="region:'center'"      style="overflow:hidden;">         <div id="scalebar-container"></div> </div> … <script> ...         // Apply the scalebar to the scalebar-container div         var container = document.getElementById('scalebar-container');         var scalebar = new Scalebar({ map: map,  scalebarUnit: "dual" }, container); ... </script> The problem with this approach is that the width of the ESRI scalebar width is dynamic and the container does not automatically expand/contract when the scalebar size changes. This can lead to the scalebar over-running the container div. A JavaScript hack can help to get around this: map.on("zoom-end", function(evt) {                     // Get max width of child divs           var w = 0;           var esriSbDiv = container.childNodes[0];           for (var i = 0; i < esriSbDiv.childNodes.length; i++) {                                 if(esriSbDiv.childNodes.offsetWidth > w) {                               w = esriSbDiv.childNodes.offsetWidth;                     }                 }           // Apply new width to scalebar container           container.setAttribute("style","width:" + (w + 40) + "px"); }); You may need to play around with the width value (+40) in the zoom-end function depending on your scalebar style. ... View more

For option A make sure to use a feature buffer when creating a feature class. Look for any ArcObjects Java documentation on IFeatureBuffer (com.esri.arcgis.geodatabase.IFeatureBuffer). I have not done this in Java but in .Net it is orders of magnitude faster. The 3 minute process will probably take several seconds using a feature buffer. ... View more

Maybe try to get in touch with Daniel Langat who performed GIS modelling for this paper: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4200235/ I don't know Daniel and am not sure how to contact him - Google is your friend. ... View more