I'm trying to add tooltips to a chart I made with Layer Cake, the graphics framework for Svelte. I looked at the Map example on the Layer Cake site, as that one has tooltips, but I can't figure out how to adapt for my bar chart.
I can't even get a string to show up, much less any data. Any help would be greatly appreciated. I think I must be missing something pretty obvious.
Below is a minimal example with dummy data.
You can see the code working in this REPL:
https://svelte.dev/repl/e8bb579754e6405ea19363b5d13d7f54?version=3.55.1
Thanks!
App.svelte:
<script>
import { LayerCake, Svg, Html } from "layercake";
import Bar from "./Bar.svelte";
import AxisX from "./AxisX.svelte";
import AxisY from "./AxisY.svelte";
import Tooltip from "./Tooltip.html.svelte";
import { scaleBand } from "d3-scale";
let data = [
{
fruit: "Apple",
number: 364,
},
{
fruit: "Banana",
number: 263,
},
{
fruit: "Mango",
number: 872,
},
{
fruit: "Pear",
number: 156,
},
]
data.forEach((d) => {
d[xKey] = +d[xKey];
});
const xKey = "number";
const yKey = "fruit";
let evt;
let hideTooltip = false;
</script>
<div class="chart-container">
<LayerCake
padding={{ top: 20, bottom: 80, left: 60, right:40 }}
x={xKey}
y={yKey}
yScale={scaleBand().paddingInner([0.15])}
xDomain={[0, null]}
data={data}
>
<Svg>
<AxisX gridlines={true} baseline={true} snapTicks={true} ticks="4" />
<AxisY gridlines={false} />
<Bar
/>
</Svg>
<Html
pointerEvents={false}
>
{#if hideTooltip !== true}
<Tooltip
{evt}
>
{#const tooltipData = {data}}
{#each Object.entries(tooltipData) as [key, value]}
{console.log('tooltipData',tooltipData)}
<div class="row">hi is this showing up?</div>
{/each}
</Tooltip>
{/if}
</Html>
</LayerCake>
</div>
<style>
.chart-container {
width: 600px;
height: 300px;
}
</style>
The other components are taken directly from the LayerCake framework.
I figured it out. Most important thing was to add a dispatch event in the Bar component, and create mouseover, movemove, focus events for the rects there.
Updated REPL: https://svelte.dev/repl/09725c92e4104d0cad53d0387a762269?version=3.55.1
App.svelte:
<script>
import { LayerCake, Svg, Html } from "layercake";
import Bar from "./Bar.svelte";
import AxisX from "./AxisX.svelte";
import AxisY from "./AxisY.svelte";
import Tooltip from "./Tooltip.html.svelte";
import { scaleBand } from "d3-scale";
let data = [
{
fruit: "Apple",
number: 364,
},
{
fruit: "Banana",
number: 263,
},
{
fruit: "Mango",
number: 872,
},
{
fruit: "Pear",
number: 156,
},
]
data.forEach((d) => {
d[xKey] = +d[xKey];
});
const xKey = "number";
const yKey = "fruit";
let evt;
let hideTooltip = false;
</script>
<div id="chart-container">
<LayerCake
padding={{ top: 20, bottom: 80, left: 60, right:40 }}
x={xKey}
y={yKey}
yScale={scaleBand().paddingInner([0.15])}
xDomain={[0, null]}
data={data}
>
<Svg>
<AxisX gridlines={true} baseline={true} snapTicks={true} ticks="4" />
<AxisY gridlines={false} />
<Bar
on:mousemove={event => evt = hideTooltip = event}
on:mouseout={() => (hideTooltip = true)}
/>
</Svg>
<Html
pointerEvents={false}
>
{#if hideTooltip !== true}
<Tooltip
{evt}
let:detail
>
{#const tooltipData = { ...detail.props }}
<div class="row">{tooltipData.fruit}: {tooltipData.number}</div>
</Tooltip>
{/if}
</Html>
</LayerCake>
</div>
<style>
#chart-container {
width: 600px;
height: 300px;
}
</style>
Bar.svelte:
<script>
import { getContext, createEventDispatcher } from "svelte";
const { data, xGet, yGet, xScale, yScale } = getContext('LayerCake');
export let fill = '#ef4136';
let hideTooltip = false;
const dispatch = createEventDispatcher();
function handleMousemove(feature) {
return function handleMousemoveFn(e) {
raise(this);
// When the element gets raised, it flashes 0,0 for a second so skip that
if (e.layerX !== 0 && e.layerY !== 0) {
dispatch("mousemove", { e });
}
};
}
</script>
<g
class="bar-group"
on:mouseout={(e) => dispatch("mouseout")}
on:blur={(e) => dispatch("mouseout")}
>
{#each $data as d, i}
<rect
class='group-rect'
data-id="{i}"
x="{$xScale.range()[0]}"
y="{$yGet(d)}"
height={$yScale.bandwidth()}
width="{$xGet(d)}"
{fill}
on:mouseover={(e) => dispatch("mousemove", { e, props: d })}
on:focus={(e) => dispatch("mousemove", { e, props: d })}
on:mousemove={(e) => handleMousemove(e, d)}
></rect>
{/each}
</g>
Tooltip.html.svelte, AxisY.svelte, and AxisX.svelte stay the same as they were (as they are in Layer Cake).
I was using ArcGIS JS API 3.10 and have a Github
repository to display GeoJSON data on a map but now I have to upgrade to
4.9 version I read 3.x to 4.x migration document published by ESRI and apply he changes like link location etc. but it’s not working anymore.
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=7,IE=9">
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
<title>ArcGIS GeoJSON Layer</title>
<!-- ArcGIS API for JavaScript CSS-->
<link rel="stylesheet" href="https://js.arcgis.com/4.9/esri/css/main.css">
#*<link rel="stylesheet" href="//js.arcgis.com/3.9/js/esri/css/esri.css">*#
<!-- Web Framework CSS - Bootstrap (getbootstrap.com) and Bootstrap-map-js (github.com/esri/bootstrap-map-js) -->
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<link rel="stylesheet" href="//esri.github.io/bootstrap-map-js/src/css/bootstrapmap.css">
<style>
html, body, #mapDiv {
height: 500px;
width: 100%;
}
</style>
<script src="https://js.arcgis.com/4.9/"></script>
<!-- ArcGIS API for JavaScript library references -->
#*<script src="//js.arcgis.com/3.10"></script>*#
<!-- Terraformer reference -->
<script src="/vendor/terraformer/terraformer.min.js"></script>
<script src="/vendor/terraformer-arcgis-parser/terraformer-arcgis-parser.min.js"></script>
<script>
require(["esri/Map",
"/Scripts/Refine.js",
"dojo/on",
"dojo/dom",
"dojo/domReady!"],
function (Map, GeoJsonLayer, on, dom) {
// Create map
var map = new Map("mapDiv", {
basemap: "gray",
center: [-122.5, 45.5],
zoom: 5
});
map.on("load", function () {
addGeoJsonLayer("http://113.197.55.251/api/punjab");
});
// Add the layer
function addGeoJsonLayer(url) {
// Create the layer
var geoJsonLayer = new GeoJsonLayer({
url: url
});
// Zoom to layer
geoJsonLayer.on("update-end", function (e) {
map.setExtent(e.target.extent.expand(1.2));
});
// Add to map
map.add(geoJsonLayer);
}
});
</script>
</head>
<body>
<div id="mapDiv"></div>
</body>
</html>
In ArcGIS 4.9 you have to use a MapView like below:
For the conversion between GeoJson and EsriJson, I suggest you the arcgis-to-geojson-utils library
Import the library in your html:
<script src="https://unpkg.com/#esri/arcgis-to-geojson-utils"></script>
javascript:
require([
"esri/Map",
"esri/views/MapView",
"esri/Graphic",
"esri/layers/FeatureLayer",
"esri/layers/support/Field",
"dojo/on",
"dojo/dom",
"dojo/domReady!"],
function (Map, MapView, Graphic, FeatureLayer, Field, on, dom) {
// Create mapView and map
var mapView = new MapView({
container: mapDiv,
map: new Map({
basemap: "gray"
}),
center: [-122.5, 45.5],
zoom: 5
}).when(function(mapView) {
makeRequest("http://113.197.55.251/api/punjab", function(response) {
createLayerFromGeoJSON(response, mapView);
});
});
// Request the geojson data using XmlHttpRequest
function makeRequest(url, callback) {
var xhr = new XMLHttpRequest();
xhr.open("GET", url, true);
xhr.setRequestHeader("Content-type", "application/json; charset=utf-8");
xhr.onreadystatechange = function() {
if (xhr.readyState == 4 && xhr.status == 200) {
callback(JSON.parse(xhr.response));
}
};
xhr.onerror = function(error) {
throw error;
}
xhr.send();
};
// Create the layer from the geojson data
function createLayerFromGeoJSON(geojson, mapView) {
// Convert geojson to esriJson using arcgis-to-geojson-utils library
var esriJson = ArcgisToGeojsonUtils.geojsonToArcGIS(geojson);
// Create an array of graphics from the esriJson
var graphics = esriJson.map(function(feature, i) {
return new Graphic({
geometry: {
type: "polygon",
rings: feature.geometry.rings
},
attributes: {
ObjectID: i,
Name: feature.attributes.Name
}
});
});
// Create a FeatureLayer from the graphics
var layer = new FeatureLayer({
title: "My feature layer",
source: graphics, // autocast as an array of esri/Graphic
geometryType: "polygon",
fields: [
new Field({
name: "ObjectID",
alias: "ObjectID",
type: "oid"
}),
new Field({
name: "Name",
alias: "Name",
type: "string"
}),
],
objectIdField: "ObjectID", // This must be defined when creating a layer from Graphics
renderer: {
type: "simple", // autocasts as new SimpleRenderer()
symbol: {
type: "simple-fill", // autocasts as new SimpleFillSymbol()
color: {r: 200, g: 200, b: 200, a: 0.5},
outline: { // autocasts as new SimpleLineSymbol()
width: 0.5,
color: "black"
}
}
}
});
mapView.map.add(layer);
return layer;
};
});
In ArcGis Js 4.x version you have to also declare a view constructor (MapView for 2D or SceneView for 3D). Here is a guide on how to set up 2D view: https://developers.arcgis.com/javascript/latest/sample-code/intro-mapview/index.html
Another way to add Json file is to convert your existing your json file to an esri json format, like in this guide: https://developers.arcgis.com/javascript/latest/sample-code/sandbox/index.html?sample=layers-featurelayer-collection.
Since I don't know your json file attributes I can't really provide a working sample, but its really simple.
I got a problem. I need to use highcharts in mobile app. So I decided to use web-view. And it does not work neither on iOS nor on Android.
I have 3 questions:
1) I've tried to launch simple highchairs demo in my web view. Something went wrong. What I did wrong in the code below ? I suppose the problem is with loading js scripts.
HTML code inside the web-view component is the following :
<html lang="en" >
<head>
<meta charset="utf-8" />
<meta name="author" content="Script Tutorials" />
<title>How to create active charts using Highcharts | Script Tutorials</title>
<script src="http://code.jquery.com/jquery-1.7.1.min.js"></script>
<script src="http://code.highcharts.com/highcharts.js"></script>
</head>
<body>
<div id="chart_1" class="chart"></div>
<script type='text/javascript'>
$(document).ready(function() {
// First chart initialization
var chart1 = new Highcharts.Chart({
chart: {
renderTo: 'chart_1',
type: 'area',
height: 350,
},
title: {
text: 'Tools developers plans to use to make html5 games (in %)'
},
xAxis: {
categories: ['Processing.js', 'Impact.js', 'Other', 'Ease.js', 'Box2D.js', 'WebGL', 'DOM', 'CSS', 'Canvas', 'Javascript']
},
yAxis: {
title: {
text: 'Interviewed'
}
},
series: [{
name: 'Dev #1',
data: [5, 10, 20, 22, 25, 28, 30, 40, 80, 90]
}, {
name: 'Dev #2',
data: [15, 15, 18, 40, 30, 25, 60, 60, 80, 70]
}, {
name: 'Dev #3',
data: [1, 3, 6, 0, 50, 25, 50, 60, 30, 100]
}]
});
});</script>
</body>
</html>
my component.ts is enabling web-view like that :
export class ChartComponent implements AfterViewInit {
public webViewSrc: string = generateChartHtml();
#ViewChild("myWebView") webViewRef: ElementRef;
#ViewChild("labelResult") labelResultRef: ElementRef;
ngAfterViewInit() {
let webview: WebView = this.webViewRef.nativeElement;
let label: Label = this.labelResultRef.nativeElement;
label.text = "WebView is still loading...";
webview.on(WebView.loadFinishedEvent, function (args: LoadEventData) {
let message;
if (!args.error) {
message = "WebView finished loading of " + args.url;
} else {
message = "Error loading " + args.url + ": " + args.error;
}
label.text = message;
console.log("WebView message - " + message);
});
}
}
PS : generateChartHtml function is simple and just returns html code written above
here is my component.html :
<ActionBar title="chaaaRtT">
</ActionBar>
<StackLayout #container VerticalOptions="FillAndExpand" height="350" [ngClass]="{'isSigningUp' : !isLoggingIn}">
<WebView #myWebView [src]="webViewSrc"></WebView>
<Label #labelResult></Label>
</StackLayout>
tns - v3.0.1
angular - v4
And my second question is :
It is related to this issue 1659.
2) How can I load local files by html inside the web-view?
Issue 1659's solution is outdated I suppose. And it says nothing about iOS.
And its not said what would be root for html file when it would try to load css/js file.
For example here
<head>
<link rel="stylesheet" href="/form.css"/>
</head>
And the last one :
3) Would it try to load form.css from the root of machine, or from some 'local' root, i.e. current folder?
Thanks in advance for the help
solutions :
1) iOS : App Transport Security has blocked a cleartext HTTP resource - this would enable making http requests to any domains. By default in iOS native script is disabled.
2) same as in any web app
3) simply relative to the folder your webview html file is in
I am having an issue where I am trying to load a WMTS feed using Openlayers and seem not to be getting good results. For ArcGis services this seems to go through but not GeoServer's WMTS services. The code is as shown below. I keep getting a javascript error
TypeError: Argument 2 of CanvasRenderingContext2D.putImageData is not a finite floating-point value.
The code I am using is shown below. Regardless of changing the projection the error remains the same. Please advise. Raw Gist here
<!DOCTYPE html>
<html>
<head>
<title>WMTS example</title>
<script src="https://code.jquery.com/jquery-1.11.2.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"> </script>
<link rel="stylesheet" href="http://openlayers.org/en/v3.8.2/css/ol.css" type="text/css">
<script src="http://openlayers.org/en/v3.8.2/build/ol.js"></script>
<meta content="text/html;charset=utf-8" http-equiv="Content-Type">
<meta content="utf-8" http-equiv="encoding">
</head>
<body>
<div class="container-fluid">
<div class="row-fluid">
<div class="span12">
<div id="map" class="map"></div>
</div>
</div>
</div>
<script>
var projection = ol.proj.get('EPSG:4326');
var projectionExtent = projection.getExtent();
var size = ol.extent.getWidth(projectionExtent) / 256;
var resolutions = new Array(21);
var matrixIds = new Array(21);
for (var i=0; i<21; ++i) {
matrixIds[i] = "EPSG:4326:" + i;
}
var attribution = new ol.Attribution({
html: 'Tiles © <a href="http://services.arcgisonline.com/arcgis/rest/' +
'services/Demographics/USA_Population_Density/MapServer/">ArcGIS</a>'
});
var map = new ol.Map({
layers: [
new ol.layer.Tile({
source: new ol.source.OSM(),
opacity: 0.7
}),
new ol.layer.Tile({
opacity: 0.7,
source: new ol.source.WMTS({
attributions: [attribution],
url: 'http://suite.opengeo.org/geoserver/gwc/service/wmts',
layer: 'opengeo:countries',
matrixSet: 'ESPG:4326',
format: 'image/png',
style : 'default',
projection: projection,
tileGrid: new ol.tilegrid.WMTS({
origin: ol.extent.getTopLeft(projectionExtent),
resolutions: resolutions,
matrixIds: matrixIds
}),
wrapX: true
})
})
],
target: 'map',
controls: ol.control.defaults({
attributionOptions: /** #type {olx.control.AttributionOptions} */ ({
collapsible: false
})
}),
view: new ol.View({
center: [-13677832, 5213272],
//center: [-11158582, 4813697],
zoom: 1
})
});
</script>
</body>
</html>
Your resolutions array is just filled with undefineds, right? You should fill it with you desired resolutions.
You should to init your resolution array like this:
for (var z = 0; z < 21; ++z) {
resolutions[z] = size / Math.pow(2, z);
matrixIds[z] = "EPSG:4326:" + z;;
}
Did you set map's projection to ol.proj.get('EPSG:4326')?
var view = new ol.View({
center: [0, 0],
zoom: 1,
projection: ol.proj.get('EPSG:4326')
});
I am new to openlayers and a beginner to javascript, but I have tried for 3 days and nights now. My code seems okay but there is something I am missing out and just can’t figure it out
I have this problem, I can’t find my geometric points on my map.
My code goes thus:
//html
<!doctype html>
<head>
<title> Me OpenStreetMap </title>
<link rel="stylesheet" href="../assets/ol3/css/ol.css" type="text/css" />
<link rel="stylesheet" href="../assets/ol3/css/samples.css" type="text/css" />
</head>
<body>
<div id="map"></div>
<script src="../assets/ol3/js/ol.js"></script>
<script>
// style for geometric layer
var meStyle = new ol.style.Circle({
radius: 20,
fill: new ol.style.Fill({
color: '#ff9900',
opacity: 1
}),
stroke: new ol.style.Stroke({
color: '#ffcc00',
opacity: 1
})
});
// geometric layer
var geoLayer = new ol.layer.Vector({
source : new ol.source.Vector({
projection : 'EPSG:3857',
url : '../data/json.json',
format: new ol.format.GeoJSON(),
style: meStyle
})
});
// create layer
var osmLayer = new ol.layer.Tile({
source : new ol.source.OSM()
});
// create view
var yaounde = new ol.proj.transform([11.5653, 3.86617],
'EPSG:4326', 'EPSG:3857'
);
var view = new ol.View({
center: yaounde,
zoom: 15
});
// create map
var map = new ol.Map({
target: 'map'
});
map.addLayer(osmLayer, geoLayer);
map.setView(view);
</script>
</body>
</html>
//geojson
{"type":"FeatureCollection",
"features":
[
{"type":"Feature","properties":{"Name":"","Description":""},"geometry":{"type":"Point","coordinates":[0.0,0.0]}},
{"type":"Feature","properties":{"Name":"1","Description":""},"geometry":{"type":"Point","coordinates":[11.50728,3.87471,0.0]}},
{"type":"Feature","properties":{"Name":"2","Description":""},"geometry":{"type":"Point","coordinates":[11.5072,3.8759,0.0]}},
{"type":"Feature","properties":{"Name":"3","Description":""},"geometry":{"type":"Point","coordinates":[11.5032,3.87556,0.0]}},
{"type":"Feature","properties":{"Name":"4","Description":""},"geometry":{"type":"Point","coordinates":[11.50291,3.87552,0.0]}},
{"type":"Feature","properties":{"Name":"5","Description":""},"geometry":{"type":"Point","coordinates":[11.50278,3.87573,0.0]}},
{"type":"Feature","properties":{"Name":"6","Description":""},"geometry":{"type":"Point","coordinates":[11.50316,3.87621,0.0]}},
{"type":"Feature","properties":{"Name":"7","Description":""},"geometry":{"type":"Point","coordinates":[11.50347,3.87611,0.0]}},
{"type":"Feature","properties":{"Name":"8","Description":""},"geometry":{"type":"Point","coordinates":[11.50314,3.8763,0.0]}},
{"type":"Feature","properties":{"Name":"9","Description":""},"geometry":{"type":"Point","coordinates":[11.50325,3.87652,0.0]}},
{"type":"Feature","properties":{"Name":"10","Description":""},"geometry":{"type":"Point","coordinates":[11.50356,3.87558,0.0]}},
{"type":"Feature","properties":{"Name":"11","Description":""},"geometry":{"type":"Point","coordinates":[11.5033,3.87564,0.0]}},
{"type":"Feature","properties":{"Name":"12","Description":""},"geometry":{"type":"Point","coordinates":[11.50397,3.87586,0.0]}},
{"type":"Feature","properties":{"Name":"13","Description":""},"geometry":{"type":"Point","coordinates":[11.50299,3.87641,0.0]}},
{"type":"Feature","properties":{"Name":"14","Description":""},"geometry":{"type":"Point","coordinates":[11.50279,3.8771,0.0]}},
{"type":"Feature","properties":{"Name":"15","Description":""},"geometry":{"type":"Point","coordinates":[11.50269,3.87723,0.0]}},
{"type":"Feature","properties":{"Name":"16","Description":""},"geometry":{"type":"Point","coordinates":[11.50258,3.87722,0.0]}},
{"type":"Feature","properties":{"Name":"17","Description":""},"geometry":{"type":"Point","coordinates":[11.49122,3.8738,0.0]}},
{"type":"Feature","properties":{"Name":"18","Description":""},"geometry":{"type":"Point","coordinates":[11.48567,3.87447,0.0]}},
{"type":"Feature","properties":{"Name":"19","Description":""},"geometry":{"type":"Point","coordinates":[11.48548,3.88107,0.0]}},
{"type":"Feature","properties":{"Name":"20","Description":""},"geometry":{"type":"Point","coordinates":[11.48526,3.8812,0.0]}},
{"type":"Feature","properties":{"Name":"21","Description":""},"geometry":{"type":"Point","coordinates":[11.48614,3.88044,0.0]}},
{"type":"Feature","properties":{"Name":"22","Description":""},"geometry":{"type":"Point","coordinates":[11.48638,3.88033,0.0]}},
{"type":"Feature","properties":{"Name":"23","Description":""},"geometry":{"type":"Point","coordinates":[11.48641,3.88053,0.0]}},
{"type":"Feature","properties":{"Name":"24","Description":""},"geometry":{"type":"Point","coordinates":[11.4868,3.88029,0.0]}},
{"type":"Feature","properties":{"Name":"25","Description":""},"geometry":{"type":"Point","coordinates":[11.48772,3.87994,0.0]}},
{"type":"Feature","properties":{"Name":"26","Description":""},"geometry":{"type":"Point","coordinates":[11.4887,3.88057,0.0]}},
{"type":"Feature","properties":{"Name":"27","Description":""},"geometry":{"type":"Point","coordinates":[11.48869,3.88057,0.0]}},
{"type":"Feature","properties":{"Name":"28","Description":""},"geometry":{"type":"Point","coordinates":[11.48868,3.8807,0.0]}},
{"type":"Feature","properties":{"Name":"29","Description":""},"geometry":{"type":"Point","coordinates":[11.4888,3.88071,0.0]}},
{"type":"Feature","properties":{"Name":"30","Description":""},"geometry":{"type":"Point","coordinates":[11.49206,3.8775,0.0]}},
{"type":"Feature","properties":{"Name":"31","Description":""},"geometry":{"type":"Point","coordinates":[11.49251,3.87748,0.0]}},
{"type":"Feature","properties":{"Name":"32","Description":""},"geometry":{"type":"Point","coordinates":[11.4923,3.87783,0.0]}},
{"type":"Feature","properties":{"Name":"33","Description":""},"geometry":{"type":"Point","coordinates":[11.49273,3.87822,0.0]}}
]
}
The OpenStreet map appears by I can’t find the points
It is very simple to solve:
map.addLayer(osmLayer);
map.addLayer(geoLayer);
The addLayer method accepts a layer, only one. A working demo with your code.