topic Test a Shapefiles Geometry in ArcGIS JavaScript Maps SDK Questions

Test a Shapefiles Geometry

jaykapalczynski — Mon, 15 Dec 2014 19:27:19 GMT

I have an app that is allowing the user to add a shapefile to the map. I need to test for its geometry before or after adding.

var allShapeFileLayers = [];

function addShapefileToMap (featureCollection) {

var fullExtent;

var layers = [];

arrayUtils.forEach(allShapeFileLayers, function(layer) {

app.map.removeLayer(layer);

});

arrayUtils.forEach(featureCollection.layers, function (layer) {

var infoTemplateSF = new InfoTemplate("Details", "${*}");

var featureLayerSF = new FeatureLayer(layer, {

infoTemplate: infoTemplateSF

});

featureLayerSF.on('click', function (event) {

app.map.infoWindow.setFeatures([event.graphic]);

});

changeRenderer(featureLayerSF);

fullExtent = fullExtent ?

fullExtent.union(featureLayerSF.fullExtent) : featureLayerSF.fullExtent;

layers.push(featureLayerSF);

});

allShapeFileLayers = layers;

app.map.addLayers(allShapeFileLayers);

app.map.setExtent(fullExtent.expand(1.25), true);

dom.byId('upload-status').innerHTML = "";

dojo.byId("RunQueryShapefile").style.display = "block";

// TEST FOR POLYGON ONLY

if ( allShapeFileLayers.geometry.type === "point" || allShapeFileLayers.geometry.type === "multipoint") {

alert("Point or multiPoint");

} else if ( allShapeFileLayers.geometry.type === "line" || allShapeFileLayers.geometry.type === "polyline") {

alert("Poline or polyline");

}

else {

alert("Polygon");

}

Re: Test a Shapefiles Geometry

jaykapalczynski — Mon, 15 Dec 2014 19:37:33 GMT

Wondering if I should bring the shapefile in and then write its features to a GraphicLayer?

Write them to a FeatureLayer?

Then test for Geometry? Thoughts?

Re: Test a Shapefiles Geometry

jaykapalczynski — Mon, 15 Dec 2014 21:09:49 GMT

GOT IT WITH THIS....just moved the If Else inside the arrayUtils.ForEAch to test....

function addShapefileToMap (featureCollection) {

var fullExtent;

var layers = [];

arrayUtils.forEach(allShapeFileLayers, function(layer) {

app.map.removeLayer(layer);

});

arrayUtils.forEach(featureCollection.layers, function (layer) {

var infoTemplateSF = new InfoTemplate("Details", "${*}");

var featureLayerSF = new FeatureLayer(layer, {

infoTemplate: infoTemplateSF

});

featureLayerSF.on('click', function (event) {

app.map.infoWindow.setFeatures([event.graphic]);

});

changeRenderer(featureLayerSF);

fullExtent = fullExtent ?

fullExtent.union(featureLayerSF.fullExtent) : featureLayerSF.fullExtent;

layers.push(featureLayerSF);

var GeometryTypeShapefile = featureLayerSF.geometryType;

//alert(GeometryTypeShapefile);

// TEST FOR POLYGON ONLY

if (featureLayerSF.geometryType === "esriGeometryPoint" || featureLayerSF.geometryType === "esriGeometryMultipoint") {

alert("Point or multiPoint");

} else if (featureLayerSF.geometryType === "esriGeometryLine" || featureLayerSF.geometryType === "esriGeometryPolyline") {

alert("line or polyline");

} else if (featureLayerSF.geometryType === "esriGeometryPolygon") {

alert("Polygon");

} else {

alert("No Geometry");

}

});

allShapeFileLayers = layers;

app.map.addLayers(allShapeFileLayers);

app.map.setExtent(fullExtent.expand(1.25), true);

dom.byId('upload-status').innerHTML = "";

dojo.byId("RunQueryShapefile").style.display = "block";

}