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Scatter plots on tile maps in JavaScript
Scatter Plots on Tile Maps in JavaScript
How to make scatter plots on tile maps in Plotly.JS
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var data = [{
type:'scattermap',
lat:['45.5017'],
lon:['-73.5673'],
mode:'markers',
marker: {
size:14
},
text:['Montreal']
}]
var layout = {
autosize: true,
hovermode:'closest',
map: {
bearing:0,
center: {
lat:45,
lon:-73
},
pitch:0,
zoom:5
},
}
Plotly.newPlot('myDiv', data, layout)
d3.csv('https://raw.githubusercontent.com/bcdunbar/datasets/master/meteorites_subset.csv', function(err, rows){
var classArray = unpack(rows, 'class');
var classes = [...new Set(classArray)];
function unpack(rows, key) {
return rows.map(function(row) { return row[key]; });
}
var data = classes.map(function(classes) {
var rowsFiltered = rows.filter(function(row) {
return (row.class === classes);
});
return {
type: 'scattermap',
name: classes,
lat: unpack(rowsFiltered, 'reclat'),
lon: unpack(rowsFiltered, 'reclong')
};
});
var layout = {
title: {text: 'Meteorite Landing Locations'},
font: {
color: 'white'
},
dragmode: 'zoom',
map: {
center: {
lat: 38.03697222,
lon: -90.70916722
},
domain: {
x: [0, 1],
y: [0, 1]
},
style: 'dark',
zoom: 1
},
margin: {
r: 20,
t: 40,
b: 20,
l: 20,
pad: 0
},
paper_bgcolor: '#191A1A',
plot_bgcolor: '#191A1A',
showlegend: true,
annotations: [{
x: 0,
y: 0,
xref: 'paper',
yref: 'paper',
text: 'Source: <a href="https://data.nasa.gov/Space-Science/Meteorite-Landings/gh4g-9sfh" style="color: rgb(255,255,255)">NASA</a>',
showarrow: false
}]
};
Plotly.newPlot('myDiv', data, layout);
});
d3.csv('https://raw.githubusercontent.com/plotly/datasets/master/2015_06_30_precipitation.csv', function(err, rows){
function unpack(rows, key) {
return rows.map(function(row) { return row[key]; });
}
scl = [[0, 'rgb(150,0,90)'],[0.125, 'rgb(0, 0, 200)'],[0.25,'rgb(0, 25, 255)'],[0.375,'rgb(0, 152, 255)'],[0.5,'rgb(44, 255, 150)'],[0.625,'rgb(151, 255, 0)'],[0.75,'rgb(255, 234, 0)'],[0.875,'rgb(255, 111, 0)'],[1,'rgb(255, 0, 0)']];
var data = [{
type: 'scattermap',
mode: 'markers',
text: unpack(rows, 'Globvalue'),
lon: unpack(rows, 'Lon'),
lat: unpack(rows, 'Lat'),
marker: {
color: unpack(rows, 'Globvalue'),
colorscale: scl,
cmin: 0,
cmax: 1.4,
reversescale: true,
opacity: 0.5,
size: 3,
colorbar:{
thickness: 10,
title: {side:
'right'
},
outlinecolor: 'rgba(68,68,68,0)',
ticks: 'outside',
ticklen: 3,
shoticksuffix: 'last',
ticksuffix: 'inches',
dtick: 0.1
}
},
name: 'NA Precipitation'
}];
layout = {
dragmode: 'zoom',
map: {
center: {
lat: 38.03697222,
lon: -90.70916722
},
domain: {
x: [0, 1],
y: [0, 1]
},
style: 'light',
zoom: 3
},
margin: {
r: 0,
t: 0,
b: 0,
l: 0,
pad: 0
},
showlegend: false
};
Plotly.newPlot('myDiv', data, layout);
});
d3.csv('https://raw.githubusercontent.com/plotly/datasets/c34aaa0b1b3cddad335173cb7bc0181897201ee6/2011_february_aa_flight_paths.csv', function(err, rows){
function unpack(rows, key) {
return rows.map(function(row) { return row[key]; });}
function getMaxOfArray(numArray) {
return Math.max.apply(null, numArray);
}
var data = [];
var count = unpack(rows, 'cnt');
var startLongitude = unpack(rows, 'start_lon');
var endLongitude = unpack(rows, 'end_lon');
var startLat = unpack(rows, 'start_lat');
var endLat = unpack(rows, 'end_lat');
for ( var i = 0 ; i < count.length; i++ ) {
var opacityValue = count[i]/getMaxOfArray(count);
var result = {
type: 'scattermap',
lon: [ startLongitude[i] , endLongitude[i] ],
lat: [ startLat[i] , endLat[i] ],
mode: 'lines',
line: {
width: 1,
color: 'red'
},
opacity: opacityValue
};
data.push(result);
};
layout = {
dragmode: 'zoom',
map: {
center: {
lat: 38.03697222,
lon: -90.70916722
},
domain: {
x: [0, 1],
y: [0, 1]
},
style: 'dark',
zoom: 2
},
margin: {
r: 0,
t: 0,
b: 0,
l: 0,
pad: 0
},
paper_bgcolor: '#191A1A',
plot_bgcolor: '#191A1A',
showlegend: false
};
Plotly.newPlot("myDiv", data, layout, {showLink: false});
});
This example uses symbol attribute to set the marker symbol.
var data = [
{
type: "scattermap",
mode: "markers+text+lines",
lon: [-75, -80, -50],
lat: [45, 20, -20],
marker: { size: 20, symbol: ["bus", "harbor", "airport"] },
text: ["Bus", "Harbor", "Airport"],
textposition: "bottom right"
}
];
var layout = {
map: { style: "outdoors", zoom: 0.7 },
showlegend: false, height: 500, width: 700
};
Plotly.newPlot("myDiv", data, layout);
> Mapbox traces are deprecated and may be removed in a future version of Plotly.js.
Earlier examples use traces that render with Maplibre GL JS.
These traces were introduced in Plotly.js 2.35.0 and replace Mapbox-based tile maps,
which are now deprecated. Here's one of the earlier examples using the Mapbox-based choroplethmapbox trace
var data = [{
type:'scattermapbox',
lat:['45.5017'],
lon:['-73.5673'],
mode:'markers',
marker: {
size:14
},
text:['Montreal']
}]
var layout = {
autosize: true,
hovermode:'closest',
mapbox: {
bearing:0,
center: {
lat:45,
lon:-73
},
pitch:0,
zoom:5
},
}
Plotly.setPlotConfig({
mapboxAccessToken: "your access token"
})
Plotly.newPlot('myDiv', data, layout)