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I'm new to this, but I'm trying to make a 3D map of a street in a semi-obscure Pennsylvania town. I have a geojson file that specifies the real estate parcels and their data, but not heights or elevations of buildings. I'm using ArcGis developer. When the page renders, I get the parcels as seen from the angle I designated, but the buildings don't extrude properly. Since I am modifying code I found online, I have probably included some things that aren't applicable to my page. I've made a codepen, but it doesn't show the extrusion at all: https://codepen.io/lschneiderman/pen/mdVJbOm?editors=0011
I'm getting these error messages:
[esri.layers.graphics.sources.GeoJSONSource] Some fields types couldn't be inferred from the features and were dropped
dojo.js:253 [esri.views.3d.layers.graphics.Graphics3DCore] Graphic in layer 17285dfb501-layer-0 has no symbol and will not render
My HTML:
<div id="viewDiv"></div>
CSS:
html, body, #viewDiv {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
}
JS:
require([
"esri/Map",
"esri/views/SceneView",
"esri/layers/GeoJSONLayer",
"esri/layers/SceneLayer"
], function(Map, SceneView, GeoJSONLayer, SceneLayer) {
const geojsonLayer = new GeoJSONLayer({
url:
"https://newsinteractive.post-gazette.com/mckeesport-fifth-ave/data/parcels-fifth1922.geojson"
});
geojsonLayer.elevationInfo = {
mode: "relative-to-ground",
featureExpressionInfo: {
expression: "$feature.elevation"
},
unit: "feet"
};
const heightVV = {
type: "size",
valueExpression: "$feature.height",
valueUnit: "feet"
};
geojsonLayer.renderer = {
type: "unique-value",
field: "CLASSDESC__asmt",
uniqueValueInfos: [
{
value: "COMMERCIAL",
symbol: {
type: "polygon-3d",
symbolLayers: [
{
type: "extrude",
material: {
color: "#D06152"
}
}
]
}
},
{
value: "RESIDENTIAL",
symbol: {
type: "polygon-3d",
symbolLayers: [
{
type: "extrude",
material: {
color: "#4A9B89"
}
}
]
}
}
],
visualVariables: [heightVV]
};
const map = new Map({
basemap: "gray-vector",
ground: "world-elevation",
layers: [
geojsonLayer,
new SceneLayer({
url:
"https://tiles.arcgis.com/tiles/cFEFS0EWrhfDeVw9/arcgis/rest/services/Buildings_Manhattan/SceneServer",
renderer: {
type: "simple",
symbol: {
type: "mesh-3d",
symbolLayers: [
{
type: "fill",
material: {
color: "white"
},
edges: {
type: "solid",
color: [100, 100, 100, 0.5],
size: 0.5
}
}
]
} //end symbol, line 93
} //end renderer
})//end SceneLayer
] //end layers
});
const view = new SceneView({
container: "viewDiv",
map: map
});
view.goTo({
target: [-79.869331, 40.350433], // coordinates of crossing
heading: 90,
tilt: 45,
zoom: 30 // instead of a z-value, we provide the zoom level
}, {
duration: 0 // tell view not to animate camera movement
});
});
Any help would be much appreciated!
The provided sample has the following issues:
Missing CORS headers
The API tries to load the GeoJSON but the browser denies it with the following error message:
Access to fetch at 'https://newsinteractive.post-gazette.com/mckeesport-fifth-ave/data/parcels-fifth1922.geojson' from origin 'https://cdpn.io' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.
You must either host the GeoJSON file on the same host the script is running or add CORS headers to the server hosting the GeoJSON file. For the CodePen below I downloaded the GeoJSON and uploaded it again as a CodePen asset, where CORS headers are properly set to make this work:
const geojsonLayer = new GeoJSONLayer({
url: "https://assets.codepen.io/2969649/parcels-fifth1922.geojson"
});
Missing height attribute for extrusion
The features (in this case parcels) listed in the GeoJSON have no height information. The provided sample uses a size visual variable to extrude the polygons by the height attribute:
const heightVV = {
type: "size",
valueExpression: "$feature.height",
valueUnit: "feet"
};
Because there is no attribute named height, all polygons are extruded 0 feet. You can either add a corresponding attribute to all the features in the GeoJSON or simply define a constant in the sample that will be applied to all extruded polygons:
geojsonLayer.renderer = {
type: "simple",
symbol: {
type: "polygon-3d",
symbolLayers: [{
type: "extrude",
size: 50, // extrude all buildings by 50 meters
material: {
color: "#D06152"
}
}]
}
}
See the following CodePen for a working version with the above parcels:
https://codepen.io/arnofiva/pen/474ecc855475ced8d50f3f121988649f?editors=0010
You might want to check out the following ArcGIS API for JavaScript resources:
Sample: extruding building footprints
Fundamentals for Building 3D Web Apps (Youtube)
Practical Guide for Building a 3D Web App from 2D Data (Youtube)
I'm using OpenLayers 3 and I need to show only the vertices of a polyline. For exemple see this image :
I want to be able to show only the red squares (they can be something else than squares, like circles). Using markers is not an option for performance issue, my lines can be huge (500 000 vertices).
Currently I have a working code :
// Define the style for vertex polyline :
var yellowVertexPolylineStyle = [
new ol.style.Style({
image: new ol.style.Circle({
radius: 1.5,
fill: new ol.style.Fill({
color: 'yellow'
})
}),
geometry: function(feature) {
return new ol.geom.MultiPoint(feature.getGeometry().getCoordinates());
}
})
];
// Create the line :
var lineLayer = new ol.layer.Vector({
zIndex: 1000,
source: new ol.source.Vector({ features: [new ol.Feature({ geometry: myLine })] }),
style: yellowVertexPolylineStyle
});
// Add the layer :
map.addLayer(lineLayer);
But this is causing performance issue when the polyline is quite big (> 10 000 points).
Using an ol.geom.MultiPoint geometry is even worse. Does someone knows a better way?
EDIT : I'm trying this now :
// Define the style for vertex polyline :
var yellowVertexPolylineStyle = [
new ol.style.Style({
image: new ol.style.Circle({
radius: 1.5,
fill: new ol.style.Fill({
color: 'yellow'
})
}),
geometry: function(feature) {
var geom = feature.get('stylegeom');
if (!geom || (geom && geom.getCoordinates().length !== feature.getGeometry().getCoordinates().length) ) {
geom = new ol.geom.MultiPoint(feature.getGeometry().getCoordinates());
feature.set('stylegeom', geom);
}
return geom;
}
})
];
I'll come back here to tell if it works...
You need to cache your style geometry, otherwise it will be calculated for every rendered frame, e.g.
geometry: function(feature) {
var geom = feature.get('stylegeom');
if (!geom) {
geom = new ol.geom.MultiPoint(feature.getGeometry().getCoordinates());
feature.set('stylegeom', geom);
}
return geom;
}
If your feature geometry changes, you'll need to update the style geometry too:
source.on('changefeature', function(evt) {
feature.set('stylegeom', undefined);
});
I am using Dojo 1.9, using memoryStore and the store has 4 data elements, in addition to the key. For each of the 4 data elements, I need to plot a Pie-Chart. working fine but only issue is that I do not know how to specify the color.
The identifier could be one of the Following - Low, Moderate,High and Extreme.
I want to use the same colors for each identifier, in all the charts. Is it possible for me to specify a color based on the value of the identifier?
The code snippet is as shown below:
var store = new Observable(new Memory({
data: {
identifier: "accumulation",
items: theData
}
}));
theChart.setTheme(PrimaryColors)
.addPlot("default", {
type: Pie,
font: "normal normal 11pt Tahoma",
fontColor: "black",
labelOffset: -30,
radius: 80
}).addSeries("accumulation", new StoreSeries(store, { query: { } }, dataElement));
I'm possibly misunderstanding your question here (is the plot interacting directly with the store? StoreSeries?), but is the fill property what you're looking for?
// Assuming data is an array of rows retrieved from the store
for(var i etc...) {
// make chart
// ...
chart.addSeries("things", [
{ y: data[i]["low"], fill: "#55FF55", text: "Low" },
{ y: data[i]["mod"], fill: "#FFFF00", text: "Moderate" },
{ y: data[i]["high"], fill: "#FFAA00", text: "High" },
{ y: data[i]["extr"], fill: "#FF2200", text: "Extreme" }
]);
}
Update: When using a StoreSeries, the third argument (dataElement in your code) can also be a function. You can use the function to return an object (containing the properties above, such as fill) instead of just a value.
chart.addSeries("thingsFromStore", new StoreSeries(store, {}, function(i) {
return {
y : i[dataElement],
text: "Label for " + i.accumulation,
fill: getColorForAccumulation(i)
};
}));
I've successfully integrated both a Flot line graph and an instance of FullCalendar into my site. They are both on separate pages (although the pages are loaded into a div via AJAX).
I've added the Flot Resize plugin and that works perfectly, re-sizing the line graph as expected. However, it seems to cause an error when resizing the calendar.
Even if I load the calendar page first, when I resize the window I get this error in the console (also, the calendar does not resize correctly):
TypeError: 'undefined' is not an object (evaluating 'r.w=o!==c?o:q.width()')
I was struggling to work out where the error was coming from, so I removed the link to the Flot Resize JS and tried again. Of course the line graph does not resize, but when resizing the calendar, it works correctly.
The div containers for the two elements have different names and the resize function is called from within the function to draw the line graph (as required).
I have tried moving the link to the Flot Resize plugin into different places (i.e. above/below the fullCalendar JS, into the template which holds the graph), but all to no avail.
Does anyone have any idea where the conflict might be and how I might solve it??
Thanks very much!
EDIT: It seems that the error is also triggered when loading the line graph (flot) page AFTER the fullcalendar page even without resizing the window.... Now I am very confused!
EDIT 2: The code which draws the line graph. The function is called on pageload and recieves the data from JSON pulled off the server. When the graph is loaded, I still get the error about shutdown() being undefined.
function plotLineGraph(theData){
var myData = theData['data'];
var myEvents = theData['events'];
var myDates = theData['dates'];
var events = new Array();
for (var i=0; i<myEvents.length; i++) {
events.push(
{
min: myEvents[i][0],
max: myEvents[i][1],
eventType: "Calendar Entry",
title: myEvents[i][2],
description: myEvents[i][3]
}
);
}
function showTooltip(x, y, contents) {
$('<div id="tooltip">' + contents + '</div>').css( {
position: 'absolute',
display: 'none',
top: y + 5,
left: x + 5,
border: '1px solid #fdd',
padding: '2px',
'background-color': 'black',
opacity: 0.80
}).appendTo("body").fadeIn(200);
}
var previousPoint = null;
$("#placeholder").bind("plothover", function (event, pos, item) {
$("#x").text(pos.x.toFixed(2));
$("#y").text(pos.y.toFixed(2));
if ($("#enableTooltip:checked").length == 0) {
if (item) {
if (previousPoint != item.dataIndex) {
previousPoint = item.dataIndex;
$("#tooltip").remove();
var x = item.datapoint[0].toFixed(2),
y = item.datapoint[1].toFixed(2);
if(item.series.label != null){
showTooltip(item.pageX, item.pageY,
item.series.label + " of " + y);
}
}
}
else {
$("#tooltip").remove();
previousPoint = null;
}
}
});
var d1 = [
myData[0], myData[1], myData[2], myData[3], myData[4],
myData[5], myData[6], myData[7], myData[8], myData[9],
myData[10], myData[11], myData[12], myData[13], myData[14],
myData[15], myData[16], myData[17], myData[18], myData[19],
myData[20], myData[21], myData[22], myData[23], myData[24],
myData[25], myData[26], myData[27], myData[28], myData[29]
];
var markings = [
{ color: '#FFBDC1', yaxis: { from: 0, to: 2 } },
{ color: '#F2E2C7', yaxis: { from: 2, to: 3.5 } },
{ color: '#B6F2B7', yaxis: { from: 3.5, to: 5 } }
];
$.plot($("#placeholder"), [
{label: "Average Daily Rating", data: d1, color: "black"}
], {
events: {
data: events,
},
series: {
lines: { show: true },
points: { show: true }
},
legend: { show: true, container: '#legend-holder' },
xaxis: {
ticks:[
myDates[0], myDates[1], myDates[2], myDates[3], myDates[4],
myDates[5], myDates[6], myDates[7], myDates[8], myDates[9],
myDates[10], myDates[11], myDates[12], myDates[13], myDates[14],
myDates[15], myDates[16], myDates[17], myDates[18], myDates[19],
myDates[20], myDates[21], myDates[22], myDates[23], myDates[24],
myDates[25], myDates[26], myDates[27], myDates[28], myDates[29]
],
},
yaxis: {
ticks: 5,
min: 0,
max: 5
},
grid: {
backgroundColor: { colors: ["#fff", "#eee"] },
hoverable: true,
clickable: true,
markings: markings
},
selection: {
color: 'white',
mode: 'x'
},
});
$('#placeholder').resize();
$('#placeholder').shutdown();
}
EDIT 3:
The calendar is called like this:
function showCalendar() {
var date = new Date();
var d = date.getDate();
var m = date.getMonth();
var y = date.getFullYear();
$('#fullcalendar').fullCalendar({
header: {
left: 'prev',
center: 'title',
right: 'next'
},
clickable: true,
firstDay: 1,
eventSources: [
{
url: '/populate-calendar/{{theProductUuid}}/',
color: 'black',
data: {
text: 'text'
}
}
],
eventClick: function(calEvent, jsEvent, view) {
var startDate = $.fullCalendar.formatDate(calEvent.start, 'yyyy-MM-dd');
var endDate = $.fullCalendar.formatDate(calEvent.end, 'yyyy-MM-dd');
var eventId = calEvent.uuid;
$('#modal-event-title').text(calEvent.title);
$('#edit-event-name').val(calEvent.title);
$('#edit-start-date').val(startDate);
$('#edit-end-date').val(endDate);
$('#edit-event-text').val(calEvent.text);
$('#edit-event-btn').attr('data-uuid', eventId);
$('#modal-edit-event').on('click', '#delete-btn', function(){
deleteCalendarEvent(eventId);
});
$('#modal-edit-event').modal();
},
});
}
The AJAX to load the page containing the flot chart:
function loadDetailedReports(uuid){
$('#product-content').fadeOut('slow', function(){
$('#product-content').empty();
$('#whole-product-sub-nav .active').removeClass('active');
$('#detailed-reports-content').load('/detailed-reports/' + uuid + '/', function(){
$('#detailed-reports-btn').addClass('active');
$('#detailed-reports-content').fadeIn('slow', function(){
if (authorized){
setLocationHash('loadDetailedReports&' + uuid);
getChartData(uuid);
} else {
setLocationHash('');
}
});
});
});
}
And the AJAX to load the page containing the calendar:
function loadCalendar(uuid){
$('#detailed-reports-content').empty().hide();
$('#product-content').fadeOut('slow', function(){
$('#whole-product-sub-nav .active').removeClass('active');
$('#product-content').load('/calendar/' + uuid + '/', function(){
$('#calendar-btn').addClass('active');
$('#product-content').fadeIn('slow', function(){
if (authorized){
setLocationHash('loadCalendar&' + uuid);
} else {
setLocationHash('');
}
showCalendar();
});
});
});
}
The calls to .resize and .shutdown are there because I was under the impression that they are necessary to achieve the resizing function and in response to your earlier comment regarding shutdown...... They're quite possibly n00b errors........?!?!
It looks like this is triggering on line 198 of jquery-resize:
data.w = w !== undefined ? w : elem.width();
This sounds like a race-condition stemming from the way you load different content into the same div. Flot binds the resize event to the chart div, and only un-binds it if the plot is destroyed cleanly.
EDIT: Looking at your code, my first suggestion would be to get rid of the resize and shutdown calls at the end of plotLineGraph. The resize plugin doesn't require any setup; it hooks into Flot to attach automatically to any new plot. So your call to resize is actually to jQuery's resize event trigger, which may be what's causing the error.
EDIT #2: I'm still not clear on your structure, but to generalize: anywhere that you might be getting rid of #placeholder (via emptying its parent or anything like that) you should first call shutdown on the plot object. If you aren't keeping a reference to it, you can do it like this: $("#placeholder").data("plot").shutdown(); but then have to account for the fact that it's undefined prior to the creation of your first plot.
If that still doesn't work, I'd need to see a live (simplified) example to make any further suggestions.
I have created a Pie chart using the Pie chart example in sencha ExtJS website , I wanted to add a click event to the each Pie slice so that i get handle to the contextual data on that slice. I was able to add a click listener to the Pie but not sure how to get the data on the slice.
Below is the ExtJS code.
Ext.onReady(function(){
var store = Ext.create('Ext.data.JsonStore', {
fields: ['name', 'data1', 'data2', 'data3', 'data4', 'data5'],
data: [{
'name': 'January',
'data1': 10
}, {
'name': 'February',
'data1': 7
}, {
'name': 'March',
'data1': 5
}, {
'name': 'April',
'data1': 2
}, {
'name': 'May',
'data1': 27
}]
});
Ext.create('Ext.chart.Chart', {
renderTo: Ext.getBody(),
width: 800,
height: 600,
animate: true,
store: store,
theme: 'Base:gradients',
legend: { // Pie Chart Legend Position
position: 'right'
},
series: [{
type: 'pie',
field: 'data1',
showInLegend: true,
tips: {
trackMouse: true,
width: 140,
height: 28,
renderer: function(storeItem, item){
//calculate and display percentage on hover
var total = 0;
store.each(function(rec){
total += rec.get('data1');
});
this.setTitle(storeItem.get('name') + ': ' + Math.round(storeItem.get('data1') / total * 100) + '%');
}
},
highlight: {
segment: {
margin: 5
}
},
label: {
field: 'name',
display: 'rotate',
contrast: true,
font: '18px Arial'
},
listeners: {//This Doesnt Work :(
itemclick: function(o){
alert('clicked at : ' + o);
}
}
}],
listeners: { //This Event handler works but I am not sure how to figure how which slice i have clicked ..................................
click: {
element: store, //bind to the underlying el property on the panel
fn: function(o, a){
alert('clicked' + o + a + this);
}
}
}
});
});
Kindly help.
Regards,
Lalit
Here is how you get data of the clicked slice. The series class supports listeners via the Observable syntax and they are:
itemmouseup When the user interacts with a marker.
itemmousedown When the user interacts with a marker.
itemmousemove When the user iteracts with a marker.
afterrender Will be triggered when the animation ends or when the series has been rendered completely.
I will make use of the itemmousedown event to capture the clicked slice. Here is my listener method:
series: [{
.
.
.
listeners:{
itemmousedown : function(obj) {
alert(obj.storeItem.data['name'] + ' &' + obj.storeItem.data['data1']);
}
}
.
}]
Note that I have placed my listener inside the series and not the chart! Now, the obj variable holds lot of information. For each series, the property to get data will differ. So, you will have to carefully inspect the object using firebug or some other developer tool.
Now, in case of Piecharts, you can get the slice information by using the obj:
obj.storeItem.data['your-series-variable-name']
Here is the obj from firebug..
I'm using a more selective approach, because I needed to add some custom logic in order to implement drag-and-drop for our charts. So after the chart definition I just add the following:
// Add drag-and-drop listeners to the sprites
var surface = chart.surface;
var items = surface.items.items;
for (var i = 0, ln = items.length; i < ln; i++) {
var sprite = items[i];
if (sprite.type != "circle") { continue; } // only add listeners to circles
// Additional funky checks for the draggable sprites
sprite.on("mousedown", onSpriteMouseDown, sprite); // mouse down ONLY for sprites
}
surface.on("mousemove", onSurfaceMouseMove, surface); // mouse move for the entire surface
surface.on("mouseup", onSurfaceMouseUp, surface);
Cheers!
Frank