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d3-v6-tip: d3.event is not defined

I am trying to add tooltip to my map when mouseOver event occurs. The goal of the mouseOver function is that it will highlights the path and also show the tip.
I am using d3-v6-tip
This is how I select my svg and calls the tip function
var svg = d3.select("#mapDiv")
.append("svg")
.attr("width", width)
.attr("height", height)
.style("background-color", "white")
.style("border", "solid 1px black")
.call(d3.zoom()
.on("zoom", function (event) {
svg.attr("transform", event.transform);
})
.scaleExtent([1, 1])
)
.append("g");
const tip = d3.tip().attr('class', 'd3-tip').html(function (event, d) {
console.log(event.target.id);
return event.target.id;
});
svg.call(tip);
This is how I draw my map:
d3.json(path).then(function (json) {
var projection = d3.geoMercator();
var features = json.features;
var fixed = features.map(function (feature) {
return turf.rewind(feature, { reverse: true });
})
var geoPath = d3.geoPath().projection(projection);
projection.fitSize([width, height], { "type": "FeatureCollection", "features": fixed })
svg.selectAll("path")
.data(fixed)
.enter()
.append("path")
.attr("d", geoPath)
.attr("id", function (d) { return d.properties.FIPS_10_; })
.style("fill", "red")
.style("stroke", "transparent")
.on("mouseover", mouseOver)
.on("mouseleave", mouseLeave)
.on("click", mouseClick)
})
How I call tip.show in my mouseOver function:
let mouseOver = function (event, d) {
var countryCode = event.target.__data__.properties.FIPS_10_;
d3.selectAll("path#" + countryCode)
.transition()
.duration(200)
.style("opacity", 1)
.style("stroke", "black")
tip.show(event, d);
}
The problem: I put a console.log in my tip declaration. When my mouse hover over it, it shows the current country name in the console(event.target.id). However, the tooltip never show up due to the error: Uncaught TypeError: d3.event is undefined.
I am not completely sure if this has to do with the library itself because the source code calls d3.event when d3.event no longer exist in d3.v6 or am I doing something wrong in my code
Also, is there a better way to create tooltip than using the library?

I downgraded my D3 version to 5 and now it worked. I think there is a problem with the D3-v6-tip library, not sure why.

I believe you're just missing the step to invoke the tip.
Check the code underneath where the page says 'If you want to load it as standalone...' :
/* Invoke the tip in the context of your visualization */
svg.call(tip)
Your event handler code otherwise seems to work fine per this adaptation:
const width = 200;
const height = 200;
const svg = d3.select("body")
.append("svg")
.attr("width", width)
.attr("height", height);
const tip = d3.tip()
.attr("class", "d3-tip")
.html((event, d) => event.target.id);
const projection = d3.geoMercator();
const mapJson = roi();
const features = mapJson.features;
const geoPath = d3.geoPath()
.projection(projection);
projection.fitSize([width, height], mapJson);
svg.selectAll("path")
.data(features)
.enter()
.append("path")
.attr("d", geoPath)
.attr("id", d => d.properties.id)
.style("fill", "green")
.style("stroke", "red")
.on("mouseover", mouseOver)
.on("mouseleave", mouseLeave)
.on("click", mouseClick)
.call(tip);
function mouseOver(event, d) {
d3.selectAll(`path#${event.target.id}`)
.transition()
.duration(200)
.style("opacity", 1)
.style("stroke", "white");
tip.show(event, d);
}
function mouseLeave(event, d) {
d3.selectAll(`path#${event.target.id}`)
.transition()
.duration(200)
.style("stroke", "red");
tip.hide()
}
function mouseClick(event, d) {
window.alert(`Selected ${d.properties.id}`);
}
<script src="https://d3js.org/d3.v6.min.js"></script>
<script src="https://unpkg.com/d3-v6-tip#1.0.6/build/d3-v6-tip.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/bumbeishvili/d3-tip-for-v6#4/d3-tip.min.css">
<script>
function roi() {
return {
"type": "FeatureCollection",
"features": [
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}
}
</script>
Regarding a 'better way', IMO it would depend on if you had specific use cases not covered by the library. Also, consider the amount of work already done for us by the library which they took the time to update for D3 v6.

I struggled with this too. I was importing d3 and d3-tip via NPM to use in my Next/React app.
The 'd3 is not defined' error is because d3 is not globally available on the window object. If importing d3 and d3-tip via NPM, make d3 available to the window. Put this in your code:
if (typeof window !== "undefined") { window.d3 = d3 }
Make sure you are following the new v6 API properly: calls to tip.html() and tip.show() need the event passed first before the data e.g.
function (event, d) {...}
not just d. That's why downgrading to v5 as per the OP's suggestion worked for me at first - I wasn't doing that. And that would also explain why the Tooltip was failing to position properly.
I hope that helps someone struggling like I was. I really appreciate this great little trusty, simple and elegant tooltip which I've used extensively over the years, and the efforts of the various forkers and maintainers to keep it compatible with the latest d3 versions.

react-leaflet: how to set zoom based on geojson

I'm using react-leaflet and my map is displaying fine so far. I've also successfully used <GeoJson> to overlay a polygon.
I've currently got hard-coded my center and zoom values, but I'd like my default zoom to be set so that the entire GeoJSON polygon is visible. I'm struggling with the documentation/answers I've found on the web (I'm only beginner/intermediate JS).
Here's my component:
import React from 'react';
import { StyleSheet, css } from 'aphrodite/no-important';
import L from 'leaflet';
import { Map, TileLayer, Marker, Popup, GeoJson } from 'react-leaflet';
import axios from 'axios';
const styles = StyleSheet.create({
map: {
height: 240,
width: '100%'
}
});
const geodatas = { "type": "Polygon", "coordinates": [ [ [ 0.901409326032148, 51.87846074983652 ], [ 0.900728205963941, 51.87844428860128 ], [ 0.899345524616457, 51.8784325381963 ], [ 0.898758899468915, 51.878417331772674 ], [ 0.898382518544509, 51.87839424237513 ], [ 0.897325195329164, 51.878223304667991 ], [ 0.89594922021314, 51.877976588301692 ], [ 0.894955640203439, 51.877846407999037 ], [ 0.894280316390969, 51.877785709788448 ], [ 0.893320356777677, 51.877703150758911 ], [ 0.892628493048771, 51.877632959777358 ], [ 0.892139172447305, 51.877548791413972 ], [ 0.891852225577892, 51.877468544876464 ], [ 0.891748332612011, 51.877548514557468 ], [ 0.891456640213901, 51.877849701135801 ], [ 0.891291905863462, 51.878157745192553 ], [ 0.891212527716225, 51.878460992695949 ], [ 0.891079390830871, 51.879306113637384 ], [ 0.891068489722895, 51.879386403461886 ], [ 0.890532814748409, 51.879394179295069 ], [ 0.890012032842571, 51.879477202674821 ], [ 0.889375209183071, 51.879561187317655 ], [ 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class MapHolder extends React.Component {
constructor() {
super();
this.state = {
geodatas: geodatas,
lat: 51.881403,
lng: 0.918583,
zoom: 17,
};
}
render() {
const accessToken = 'pk.eyJ1IjoiZ2F6YXN0b24iLCJhIjoiY2loa21hNzRoMG50eHQ0bHp2azNpeHhwaiJ9.h81FekBCVUufbqxc9ywySQ'
const position = [this.state.lat, this.state.lng];
console.log(this.refs.geojson);
console.log(this.refs.foo.leafletElement);
this.refs.foo.leafletElement.fitBounds(this.refs.geojson.getBounds());
return (
<div>
<Map ref="foo" style={{height: "260px"}} center={position} zoom={this.state.zoom} scrollWheelZoom={false} >
<TileLayer
attribution='© OpenStreetMap contributors'
url={`https://api.mapbox.com/styles/v1/gazaston/cihkojpjh00whrom498ghjoc5/tiles/256/{z}/{x}/{y}?access_token=${accessToken}`}
id='gazaston.o9phia6g'
detectRetina={true}
/>
<GeoJson ref="geojson" data={this.state.geodatas} />
</Map>
</div>
);
}
export default MapHolder;
UPDATE:
When I use the React dev tools, select my <MapHolder> component, switch to the console, and run
$r.refs.foo.leafletElement.fitBounds($r.refs.geojson.leafletElement.getBounds());
everything works as expected. However, in my code
this.refs.foo.leafletElement.fitBounds(this.refs.geojson.leafletElement.getBounds());
returns Uncaught TypeError: Cannot read property 'leafletElement' of undefined
I'm so close! What am I missing?

Because of the way that react-leaflet handles its lifecycle in which it turns over control to leaflet immediately after it mounts the Map component, it can be tricky to access subcomponent refs.
I solved this issue two ways.
My first attempt involved storing the number of features that was adding within my outer component state, attaching an map-object event handler for layeradd as recommended above, and then accessing the Geojson ref once all the polygons had been added.
```
componentDidMount() {
let count = 0;
const map = this.refs.map.leafletElement;
map.on('layeradd', () => {
count += 1;
if (count > this.state.polygonCount) {
setTimeout(()=>{DO STUFF}, 200)
}
});
}
```
While this works, it smells.
The second way I solved this was to use turf-bbox to pre-compute the bounds of the geojson, which I then passed in to the Map object in my render method.
```
const bboxArray = bbox(geojson);
const corner1 = [bboxArray[1], bboxArray[0]];
const corner2 = [bboxArray[3], bboxArray[2]];
this.state.bounds = [corner1, corner2];
```
and then
```
<Map bounds={this.state.bounds} ref="map">
```
The second way is much cleaner if you don't need to do anything more with the GeoJSON leafletElement, but the first way will let you set up any number of event handlers, etc.

Based on #IvanSanchez reply and how react-leaflet works I would suggest first add a ref to your GeoJson layer
<GeoJson ref="geojson" data={this.state.geodatas} />
then access the map with its ref
this.refs.foo.leafletElement.fitBounds(this.refs.geojson.leafletElement.getBounds())

Seems like you're 99% of the way there! For benefit of future readers, you can escape the lingering uncaught type error:
Uncaught TypeError: Cannot read property 'leafletElement' of undefined
...by wrapping the fitBounds method call in a check to ensure this.refs.foo, this.refs.geojson and friends exist:
if (this.refs.foo && this.refs.foo.leafletElement && this.refs.geojson && this.refs.geojson.leafletElement) {
this.refs.foo.leafletElement.fitBounds(this.refs.geojson.leafletElement.getBounds());
}
The reason the current implementation throws an error is that the map and GeoJSON refs aren't set until the render method is called once. That means this.refs.foo and this.refs.geojson aren't set the very first time the render method is called.
You could also consider moving the entire fitBounds operation out of the render method and into componentWillReceiveProps; this would be especially worthwhile if geodata was likely to update dynamically via props sent in to the map component.

GPS Coordinates to svg map

Is there a way to transform a GPS coordinates objects to an SVG map ?
I have Something like this object and I want to draw an svg map USING Javascript if it's possible (or any other language if it exists).
Thanks in advance for your help
{
"type": "FeatureCollection",
"features": [
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]
}

Dashed line in Line plus bar chart NVD3

I have added a line in line plus bar chart in NVD3. but i want that added single line in dashed format.
How to do it in linePlusBar chart.
As shown in image Limit line I added but i want this line to be doted or dashed.
Please help me out, how to do it??
As shown in above graph i want orange line to be dashed.
how to do it??
<script>
var chart;
nv.addGraph(function() {
chart = nv.models.linePlusBarChart().margin({
top : 50,
right : 80,
bottom : 30,
left : 80
}).legendRightAxisHint(' [Using Right Axis]').color(
d3.scale.category10().range()).options({
focusEnable : false
});
chart.xAxis.tickFormat(function(d) {
return d3.time.format('%x')(new Date(d))
}).showMaxMin(false);
chart.y2Axis.tickFormat(function(d) {
return '$' + d3.format(',f')(d)
});
chart.bars.forceY([ 0 ]).padData(false);
chart.x2Axis.tickFormat(function(d) {
return d3.time.format('%x')(new Date(d))
}).showMaxMin(false);
d3.select('#chart1 svg').datum(testdata).transition().duration(500)
.call(chart);
nv.utils.windowResize(chart.update);
chart.dispatch.on('stateChange', function(e) {
nv.log('New State:', JSON.stringify(e));
});
return chart;
});
</script>
Data as follows:
var testdata = [
{
"key" : "Quantity",
"bar" : true,
"values" : [ [ 1136005200000, 1271000.0 ],
[ 1138683600000, 1271000.0 ],
[ 1141102800000, 1271000.0 ], [ 1143781200000, 0 ],
[ 1146369600000, 0 ], [ 1149048000000, 0 ],
[ 1151640000000, 0 ], [ 1154318400000, 0 ],
[ 1156996800000, 0 ], [ 1159588800000, 3899486.0 ],
[ 1162270800000, 3899486.0 ],
[ 1164862800000, 3899486.0 ],
[ 1167541200000, 3564700.0 ],
[ 1170219600000, 3564700.0 ],
[ 1172638800000, 3564700.0 ],
[ 1175313600000, 2648493.0 ],
[ 1177905600000, 2648493.0 ],
[ 1180584000000, 2648493.0 ],
[ 1183176000000, 2522993.0 ],
[ 1185854400000, 2522993.0 ],
[ 1188532800000, 2522993.0 ],
[ 1191124800000, 2906501.0 ],
[ 1193803200000, 2906501.0 ],
[ 1196398800000, 2906501.0 ],
[ 1199077200000, 2206761.0 ],
[ 1201755600000, 2206761.0 ],
[ 1204261200000, 2206761.0 ],
[ 1206936000000, 2287726.0 ],
[ 1209528000000, 2287726.0 ],
[ 1212206400000, 2287726.0 ],
[ 1214798400000, 2732646.0 ],
[ 1217476800000, 2732646.0 ],
[ 1220155200000, 2732646.0 ],
[ 1222747200000, 2599196.0 ],
[ 1225425600000, 2599196.0 ],
[ 1228021200000, 2599196.0 ],
[ 1230699600000, 1924387.0 ],
[ 1233378000000, 1924387.0 ],
[ 1235797200000, 1924387.0 ],
[ 1238472000000, 1756311.0 ],
[ 1241064000000, 1756311.0 ],
[ 1243742400000, 1756311.0 ],
[ 1246334400000, 1743470.0 ],
[ 1249012800000, 1743470.0 ],
[ 1251691200000, 1743470.0 ],
[ 1254283200000, 1519010.0 ],
[ 1256961600000, 1519010.0 ],
[ 1259557200000, 1519010.0 ],
[ 1262235600000, 1591444.0 ],
[ 1264914000000, 1591444.0 ],
[ 1267333200000, 1591444.0 ],
[ 1270008000000, 1543784.0 ],
[ 1272600000000, 1543784.0 ],
[ 1275278400000, 1543784.0 ],
[ 1277870400000, 1309915.0 ],
[ 1280548800000, 1309915.0 ],
[ 1283227200000, 1309915.0 ],
[ 1285819200000, 1331875.0 ],
[ 1288497600000, 1331875.0 ],
[ 1291093200000, 1331875.0 ],
[ 1293771600000, 1331875.0 ],
[ 1296450000000, 1154695.0 ],
[ 1298869200000, 1154695.0 ],
[ 1301544000000, 1194025.0 ],
[ 1304136000000, 1194025.0 ],
[ 1306814400000, 1194025.0 ],
[ 1309406400000, 1194025.0 ],
[ 1312084800000, 1194025.0 ],
[ 1314763200000, 1244525.0 ],
[ 1317355200000, 475000.0 ],
[ 1320033600000, 475000.0 ],
[ 1322629200000, 475000.0 ],
[ 1325307600000, 690033.0 ],
[ 1327986000000, 690033.0 ],
[ 1330491600000, 690033.0 ],
[ 1333166400000, 514733.0 ],
[ 1335758400000, 514733.0 ] ]
},
{
"key" : "Limit",
"values" : [ [ 1136005200000, 500 ], [ 1335758400000, 500 ] ],
classed : 'dashed'
},
{
"key" : "Price",
"values" : [ [ 1136005200000, 71.89 ],
[ 1138683600000, 75.51 ], [ 1141102800000, 68.49 ],
[ 1143781200000, 62.72 ], [ 1146369600000, 70.39 ],
[ 1149048000000, 59.77 ], [ 1151640000000, 57.27 ],
[ 1154318400000, 67.96 ], [ 1156996800000, 67.85 ],
[ 1159588800000, 76.98 ], [ 1162270800000, 81.08 ],
[ 1164862800000, 91.66 ], [ 1167541200000, 84.84 ],
[ 1170219600000, 85.73 ], [ 1172638800000, 84.61 ],
[ 1175313600000, 92.91 ], [ 1177905600000, 99.8 ],
[ 1180584000000, 121.191 ],
[ 1183176000000, 122.04 ],
[ 1185854400000, 131.76 ],
[ 1188532800000, 138.48 ],
[ 1191124800000, 153.47 ],
[ 1193803200000, 189.95 ],
[ 1196398800000, 182.22 ],
[ 1199077200000, 198.08 ],
[ 1201755600000, 135.36 ],
[ 1204261200000, 125.02 ],
[ 1206936000000, 143.5 ],
[ 1209528000000, 173.95 ],
[ 1212206400000, 188.75 ],
[ 1214798400000, 167.44 ],
[ 1217476800000, 158.95 ],
[ 1220155200000, 169.53 ],
[ 1222747200000, 113.66 ],
[ 1225425600000, 107.59 ],
[ 1228021200000, 92.67 ], [ 1230699600000, 85.35 ],
[ 1233378000000, 90.13 ], [ 1235797200000, 89.31 ],
[ 1238472000000, 105.12 ],
[ 1241064000000, 125.83 ],
[ 1243742400000, 135.81 ],
[ 1246334400000, 142.43 ],
[ 1249012800000, 163.39 ],
[ 1251691200000, 168.21 ],
[ 1254283200000, 185.35 ],
[ 1256961600000, 188.5 ],
[ 1259557200000, 199.91 ],
[ 1262235600000, 210.732 ],
[ 1264914000000, 192.063 ],
[ 1267333200000, 204.62 ],
[ 1270008000000, 235.0 ],
[ 1272600000000, 261.09 ],
[ 1275278400000, 256.88 ],
[ 1277870400000, 251.53 ],
[ 1280548800000, 257.25 ],
[ 1283227200000, 243.1 ],
[ 1285819200000, 283.75 ],
[ 1288497600000, 300.98 ],
[ 1291093200000, 311.15 ],
[ 1293771600000, 322.56 ],
[ 1296450000000, 339.32 ],
[ 1298869200000, 353.21 ],
[ 1301544000000, 348.5075 ],
[ 1304136000000, 350.13 ],
[ 1306814400000, 347.83 ],
[ 1309406400000, 335.67 ],
[ 1312084800000, 390.48 ],
[ 1314763200000, 384.83 ],
[ 1317355200000, 381.32 ],
[ 1320033600000, 404.78 ],
[ 1322629200000, 382.2 ], [ 1325307600000, 405.0 ],
[ 1327986000000, 456.48 ],
[ 1330491600000, 542.44 ],
[ 1333166400000, 599.55 ],
[ 1335758400000, 583.98 ] ]
} ]

You can do this with CSS. For instance if you wanted the 2nd line dashed:
<style>
.nv-series-1>path {
stroke-dasharray: 3,3;
}
</style>

[Leaflet]How to remove unwanted borders in map?

Good Morning to all
I just want to share my little problem with this,There is an annoying border shaped triangle in the middle of the map you can take a look in it if you want.
http://i57.tinypic.com/11lju3n.jpg
Here is my code
</script>
<script
src="http://cdn.leafletjs.com/leaflet-0.7/leaflet.js">
</script>
<script
src="http://leaflet.github.io/Leaflet.draw/leaflet.draw.js">
</script>
<script>
// credits: https://github.com/turban/Leaflet.Mask
L.Mask = L.Polygon.extend({
options: {
stroke: false,
color: '#333',
fillOpacity: 0.5,
clickable: true,
outerBounds: new L.LatLngBounds([-90, -360], [90, 360])
},
initialize: function (latLngs, options) {
var outerBoundsLatLngs = [
this.options.outerBounds.getSouthWest(),
this.options.outerBounds.getNorthWest(),
this.options.outerBounds.getNorthEast(),
this.options.outerBounds.getSouthEast()
];
L.Polygon.prototype.initialize.call(this, [outerBoundsLatLngs, latLngs], options);
},
});
L.mask = function (latLngs, options) {
return new L.Mask(latLngs, options);
};
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var map = new L.Map('map');
var osmUrl='http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png';
var osmAttrib='Map data © OpenStreetMap contributors';
var osm = new L.TileLayer(osmUrl, {minZoom: 15, maxZoom: 18, attribution: osmAttrib});
map.addLayer(osm);
map.setView([14.7053533,121.031448],15);
var coordinates = sanbartolome.features[0].geometry.coordinates[0];
var coordinates1 = santamonoica.features[0].geometry.coordinates[0];
var coordinates2 = sanagustin.features[0].geometry.coordinates[0];
var latLngs = [];
for (i=0; i<coordinates.length; i++) {
latLngs.push(new L.LatLng(coordinates[i][1], coordinates[i][0]));
}
for (i=0; i<coordinates1.length; i++) {
latLngs.push(new L.LatLng(coordinates1[i][1], coordinates1[i][0]));
}
for (i=0; i<coordinates2.length; i++) {
latLngs.push(new L.LatLng(coordinates1[i][1], coordinates1[i][0]));
}
L.mask(latLngs).addTo(map);
var options = {
style: function (feature) {
return {
"color": "yellow",
"weight": 5,
"opacity": 0.001,
"fillColor": "red",
"fillOpacity": 0.5
};
}
};
var options1 = {
style: function (feature) {
return {
"color": "yellow",
"weight": 5,
"opacity": 0.001,
"fillColor": "blue",
"fillOpacity": 0.5
};
}
};
var options2 = {
style: function (feature) {
return {
"color": "yellow",
"weight": 5,
"opacity": 0.001,
"fillColor": "green",
"fillOpacity": 0.5
};
}
};
var layerpoly = new L.geoJson(sanbartolome.features,options).addTo(map);
var layerpoly1 = new L.geoJson(santamonoica.features,options1).addTo(map);
var layerpoly2 = new L.geoJson(sanagustin.features,options2).addTo(map);
My question here is that how can i remove the unwanted part on the middle? any help? ty

Remove L.mask(latLngs).addTo(map);