Analyze hotspots

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 // [WriteFile Name=AnalyzeHotspots, Category=Analysis] // [Legal] // Copyright 2017 Esri. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. // [Legal]  #ifdef PCH_BUILD #include "pch.hpp" #endif // PCH_BUILD  // sample headers #include "AnalyzeHotspots.h"  // ArcGIS Maps SDK headers #include "ArcGISMapImageLayer.h" #include "Envelope.h" #include "Error.h" #include "GeoprocessingJob.h" #include "GeoprocessingResult.h" #include "GeoprocessingString.h" #include "GeoprocessingTask.h" #include "GeoprocessingTypes.h" #include "LayerListModel.h" #include "Map.h" #include "MapQuickView.h" #include "MapTypes.h" #include "TaskTypes.h"  // Qt headers #include <QFuture>  using namespace Esri::ArcGISRuntime;  AnalyzeHotspots::AnalyzeHotspots(QQuickItem* parent /* = nullptr */):  QQuickItem(parent) { }  AnalyzeHotspots::~AnalyzeHotspots() = default;  void AnalyzeHotspots::init() {  qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");  qmlRegisterType<AnalyzeHotspots>("Esri.Samples", 1, 0, "AnalyzeHotspotsSample"); }  void AnalyzeHotspots::componentComplete() {  QQuickItem::componentComplete();   // find QML MapView component  m_mapView = findChild<MapQuickView*>("mapView");   // Create a map using the topographic basemap  m_map = new Map(BasemapStyle::ArcGISTopographic, this);   // Set map to map view  m_mapView->setMap(m_map);   // Create the Geoprocessing Task  m_hotspotTask = new GeoprocessingTask(QUrl("https://sampleserver6.arcgisonline.com/arcgis/rest/services/911CallsHotspot/GPServer/911%20Calls%20Hotspot"), this);   // Connect to the GP Task's errorOccurred signal  connect(m_hotspotTask, &GeoprocessingTask::errorOccurred, this, [this](const Error& error)  {  emit displayErrorDialog("Geoprocessing Task failed", error.message());  }); }  void AnalyzeHotspots::executeTaskWithDates(const QString& fromDate, const QString& toDate) {  // Create the GP Parameters  GeoprocessingParameters hotspotParameters = createParameters(fromDate, toDate);   // Create the GP Job and connect to the status signals  GeoprocessingJob* job = m_hotspotTask->createJob(hotspotParameters);  connect(job, &GeoprocessingJob::statusChanged, this, [this, job](JobStatus jobStatus)  {  switch (jobStatus)  {  case JobStatus::Failed:  emit displayErrorDialog("Geoprocessing Task failed", !job->error().isEmpty() ? job->error().additionalMessage() : "Unknown error.");  m_jobInProgress = false;  m_jobStatus = "Job failed";  break;  case JobStatus::Started:  m_jobInProgress = true;  m_jobStatus = "Job in progress...";  break;  case JobStatus::Paused:  m_jobInProgress = false;  m_jobStatus = "Job paused...";  break;  case JobStatus::Succeeded:  m_jobInProgress = false;  m_jobStatus = "Job succeeded";  // handle the results  processResults(job->result());  break;  default:  break;  }   // emit signals  emit jobInProgressChanged();  emit statusChanged();  });   // Start the job  job->start();  m_jobInProgress = true;  emit jobInProgressChanged();  m_jobStatus = "Job in progress...";  emit statusChanged(); }  GeoprocessingParameters AnalyzeHotspots::createParameters(const QString& fromDate, const QString& toDate) {  // Create the GeoprocessingParameters and set the execution type  GeoprocessingParameters hotspotParameters = GeoprocessingParameters(GeoprocessingExecutionType::AsynchronousSubmit);   // create the query string  QString queryString("(\"DATE\" > date '%1 00:00:00' AND \"DATE\" < date '%2 00:00:00')");  queryString = queryString.arg(fromDate, toDate);   // Add query that contains the date range and the days of the week that are used in analysis  QMap<QString, GeoprocessingParameter*> inputs;  inputs["Query"] = new GeoprocessingString(queryString, this);  hotspotParameters.setInputs(inputs);   // return the GeoprocessingParameters  return hotspotParameters; }  void AnalyzeHotspots::processResults(GeoprocessingResult* result) {  // Clear the map's operational layers  m_mapView->map()->operationalLayers()->clear();   // Extract the layer from the result and add to the map  m_layer = result->mapImageLayer();  connect(m_layer, &ArcGISMapImageLayer::doneLoading, this, [this](const Error& error)  {  if (error.isEmpty())  {  m_mapView->setViewpointGeometryAsync(m_layer->fullExtent());  }  });  m_mapView->map()->operationalLayers()->append(m_layer); }