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hexbinmap.html
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<!DOCTYPE html>
<html lang="en">
<head>
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<title>Hexbin map | the D3 Graph Gallery</title>
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<meta
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content="How to build a hexbin map with Javascript and D3.js: a set of examples with code and explanation"
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<meta name="author" content="Yan Holtz" />
<link rel="icon" href="img/logo/D3_single_small.png" />
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<meta property="og:image" content="img/overview_RGG.png" />
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<!-- Header -->
<header class="masthead" style="padding-top: 150px; padding-bottom: 80px">
<div class="textlanding">
<h1>Hexbin map</h1>
<hr class="short_hr" />
<br />
<ul class="list-inline social-buttons">
<li class="list-inline-item">
<a href="https://twitter.com/R_Graph_Gallery">
<i class="fa fa-twitter"></i>
</a>
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</a>
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<a href="https://www.yan-holtz.com">
<i class="fa fa-home"></i>
</a>
</li>
</ul>
<br /><br />
<p style="max-width: 700px; margin: auto">
A
<a href="https://www.data-to-viz.com/graph/hexbinmap.html"
>hexbin map</a
>
refers to two different concepts. It can be based on a geospatial
object where all regions of the map are represented as hexagons. Or it
can refer to a 2d density technique described in
<a href="density2d.html">this section</a>. Read the dedicated article
in
<a href="https://www.data-to-viz.com/graph/hexbinmap.html"
>data-to-viz</a
>
to make sure you understand the difference.
</p>
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<section class="bg" id="portfolio" style="padding-top: 10px">
<div class="container">
<div class="mySeryTitle">Hexbin map from geospatial object</div>
<hr />
<p>
In this case, the technique is very close from a
<a href="choropleth.html">choropleth map</a>. It's actually exactly
the same, except that the geoJson input gives hexagon boundaries
instead of region boundaries. Thus, you probably want to visit the
<a href="choropleth.html">choropleth section</a> for more examples.
</p>
<a
class="btn btn-secondary btn-md text-uppercase"
href="choropleth.html"
>Choropleth section</a
>
<br /><br />
<div id="portfolio-items" class="row">
<div class="col-md-4 col-sm-6 portfolio-item">
<a class="portfolio-link" href="graph/hexbinmap_geo_basic.html">
<div class="portfolio-hover">
<div class="portfolio-hover-content">
<p>Most basic</p>
<hr />
<p class="explanation_portfolio">
Just a basic background map based on a geoJson input that
gives the hexagon boundary.
</p>
</div>
</div>
<img
class="img-fluid"
src="img/graph/hexbinmap_geo_basic.png"
alt=""
/>
</a>
</div>
<div class="col-md-4 col-sm-6 portfolio-item">
<a class="portfolio-link" href="graph/hexbinmap_geo_label.html">
<div class="portfolio-hover">
<div class="portfolio-hover-content">
<p>Add label in centroids</p>
<hr />
<p class="explanation_portfolio">
Use the <code>centroid()</code> function to add hexagon
labels.
</p>
</div>
</div>
<img
class="img-fluid"
src="img/graph/hexbinmap_geo_label.png"
alt=""
/>
</a>
</div>
</div>
<br /><br /><br /><br />
<div class="mySeryTitle">Hexbin map from list of coordinates</div>
<hr />
<p>
In this case, the required input is a list of coordinates. The map
area will be split in a multitude of hexagon, the number of data point
per hexagon will be counted and represented as a color. It is actually
a <a href="density2d.html">density 2d</a> technique plotted on top of
a map.
</p>
<a class="btn btn-secondary btn-md text-uppercase" href="density2d.html"
>Density 2d section</a
>
<br /><br />
<div id="portfolio-items" class="row">
<div class="col-md-4 col-sm-6 portfolio-item">
<a class="portfolio-link" href="graph/area_basic.html">
<div class="portfolio-hover">
<div class="portfolio-hover-content">
<p>Most basic</p>
<hr />
<p class="explanation_portfolio">
The most basic area chart you can do in d3.js. Keeping only
the core code.
</p>
</div>
</div>
<img class="img-fluid" src="img/graph/area_basic.png" alt="" />
</a>
</div>
</div>
<br /><br /><br /><br />
<div class="mySeryTitle">Selection of blocks</div>
<hr />
<p>
A few blocks with more complicated codes to showcase what's possible
to do with connection maps. First show how to display connections on
hover. Second show how to apply
<a href="bundle.html">edge bundling</a> to the connection to declutter
the chart.
</p>
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class="portfolio-link"
href="https://bl.ocks.org/mbostock/4330486"
>
<div class="portfolio-hover">
<div class="portfolio-hover-content">
<p>Bivariate Hexbin map</p>
<hr />
<p class="explanation_portfolio">
Density 2d technique. Quantity of data per hexagon is
represented through hexagon color and size.
</p>
</div>
</div>
<img
class="img-fluid showBlock"
src="img/block/block_hexbinmapBivariate.png"
alt="Bivariate hexbin map"
/>
</a>
</div>
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<a
class="portfolio-link"
href="https://bl.ocks.org/sjengle/2e58e83685f6d854aa40c7bc546aeb24"
>
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<div class="portfolio-hover-content">
<p>D3-hexbin documentation</p>
<hr />
<p class="explanation_portfolio">
The complete documentation of d3-hexbin: the plugin that
groups two-dimensional points into hexagonal bins.
</p>
</div>
</div>
<img
class="img-fluid showBlock"
src="img/block/block_hexbinmapDoc.png"
alt="D3 hexbin documentation"
/>
</a>
</div>
</div>
</div>
</section>
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<p class="mySeryTitle">Related chart types</p>
<hr />
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<div class="col-md-2 col-sm-4 portfolio-item">
<a class="portfolio-link" href="backgroundmap.html">
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<i class="fa fa-plus fa-3x"></i>
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<img class="img-fluid" src="img/section/Map150.png" alt="" />
</a>
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</div>
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</div>
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<img
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<div class="captionPortfolio">Hexbin map</div>
</div>
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<div class="portfolio-hover-content">
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</div>
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alt=""
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</a>
<div class="captionPortfolio">Connection</div>
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