I am currently trying to create a drilldown map on Highmaps using this example: http://www.highcharts.com/maps/demo/map-drilldown
I have got this to work with my own data for a different country correctly.
The code from this example is:
$(function () {
var data = Highcharts.geojson(Highcharts.maps['countries/us/us-all']),
// Some responsiveness
small = $('#container').width() < 400;
// Set drilldown pointers
$.each(data, function (i) {
this.drilldown = this.properties['hc-key'];
this.value = i; // Non-random bogus data
});
// Instanciate the map
Highcharts.mapChart('container', {
chart: {
events: {
drilldown: function (e) {
if (!e.seriesOptions) {
var chart = this,
mapKey = 'countries/us/' + e.point.drilldown + '-all',
// Handle error, the timeout is cleared on success
fail = setTimeout(function () {
if (!Highcharts.maps[mapKey]) {
chart.showLoading('<i class="icon-frown"></i> Failed loading ' + e.point.name);
fail = setTimeout(function () {
chart.hideLoading();
}, 1000);
}
}, 3000);
// Show the spinner
chart.showLoading('<i class="icon-spinner icon-spin icon-3x"></i>'); // Font Awesome spinner
// Load the drilldown map
$.getScript('https://code.highcharts.com/mapdata/' + mapKey + '.js', function () {
data = Highcharts.geojson(Highcharts.maps[mapKey]);
// Set a non-random bogus value
$.each(data, function (i) {
this.value = i;
});
// Hide loading and add series
chart.hideLoading();
clearTimeout(fail);
chart.addSeriesAsDrilldown(e.point, {
name: e.point.name,
data: data,
dataLabels: {
enabled: true,
format: '{point.name}'
}
});
});
}
this.setTitle(null, { text: e.point.name });
},
drillup: function () {
this.setTitle(null, { text: 'USA' });
}
}
},
title: {
text: 'Highcharts Map Drilldown'
},
subtitle: {
text: 'USA',
floating: true,
align: 'right',
y: 50,
style: {
fontSize: '16px'
}
},
legend: small ? {} : {
layout: 'vertical',
align: 'right',
verticalAlign: 'middle'
},
colorAxis: {
min: 0,
minColor: '#E6E7E8',
maxColor: '#005645'
},
mapNavigation: {
enabled: true,
buttonOptions: {
verticalAlign: 'bottom'
}
},
plotOptions: {
map: {
states: {
hover: {
color: '#EEDD66'
}
}
}
},
series: [{
data: data,
name: 'USA',
dataLabels: {
enabled: true,
format: '{point.properties.postal-code}'
}
}],
drilldown: {
activeDataLabelStyle: {
color: '#FFFFFF',
textDecoration: 'none',
textOutline: '1px #000000'
},
drillUpButton: {
relativeTo: 'spacingBox',
position: {
x: 0,
y: 60
}
}
}
});
});<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script src="https://code.highcharts.com/maps/highmaps.js"></script>
<script src="https://code.highcharts.com/maps/modules/data.js"></script>
<script src="https://code.highcharts.com/maps/modules/drilldown.js"></script>
<script src="https://code.highcharts.com/maps/modules/exporting.js"></script>
<script src="https://code.highcharts.com/maps/modules/offline-exporting.js"></script>
<script src="https://code.highcharts.com/mapdata/countries/us/us-all.js"></script>
<div id="container" style="height: 500px; min-width: 310px; max-width: 800px; margin: 0 auto"></div>From my understanding, when a user clicks on a particular state, a separate js file containing the geo information for that state is loaded. However, I think that there is something missing from the code in that when there is no line of code which removes the data from the state-level js file once the user clicks 'Back to USA' and chooses another state. This results in some overlap i.e. when I click California, the California js file is called. The california state map remains under subsequent maps once I call another state. This is not hugely noticeable for this map due to it's square-like shape. However, in my example I can still see previously-loaded states (at a very small size) once I load another.
Can anyone give some insight into how I could get the previously-loaded state-level map to be removed once the user clicks on a different state?
Thanks in advance.
