Any idea how to change background colours to a Column in ChartJS, based on numbers on the horizontal axis? The result required is like the image bellow.
Eg.
horizontal axis between 0 - 2, background color for those columns is '#000'
horizontal axis between 3 - 4, background color for those columns is '#eee'
horizontal axis equal or greater then 5, background color for those columns is '#888'.
See Print Example
If I'm understanding correctly you want to be able to colour each individual column. If you put all the data in the same dataset you can use backgroundColor as below to define a colour order.
HTML:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script src='https://cdn.jsdelivr.net/npm/chart.js#3.7.1/dist/chart.min.js'></script>
</head>
<body style="background:black">
<div class="chart-container">
<canvas id="myChart"></canvas>
</div>
</body>
</html>
JS:
const ctx = document.getElementById('myChart').getContext('2d');
this.MYCHART = new Chart(ctx, {
type: "bar",
data: {
labels: ['0', '1', '2', '3', '4'],
datasets: [{
data: [100, 100, 100, 100, 100],
backgroundColor: [
'#FFF',
'#FFF',
'#eee',
'#eee',
'#888',
]
}]
}
});
Related
Region 1
Region 2
I am trying to add map on a location page and I want to select some states from US and Canada in different regions when user hovers on a specific part of the map. Basically a map of North and South America(Brazil and Argentina) with different regions.
In the following code I attempted to highlight 2 US states and 1 Canada state. But I get "Requested map does not exist" error when I try to highlight states on a continent.
<html>
<head>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
google.charts.load('current', {
'packages': ['geochart'],
'mapsApiKey': 'AIzaSyD-9tSrke72PouQMnMX-a7eZSW0jkFMBWY'
});
google.charts.setOnLoadCallback(drawRegionsMap);
function drawRegionsMap() {
var data = google.visualization.arrayToDataTable([
['State', 'Offices'],
['New Jersey', 2],
['Alabama', 3],
['Toronto', 1]
]);
var options = {
region: '019', // Americas Continent
colorAxis: {
colors: ['#00853f', 'black', '#e31b23']
},
backgroundColor: '#81d4fa',
datalessRegionColor: 'gray',
defaultColor: '#f5f5f5',
resolution: 'provinces'
};
var chart = new google.visualization.GeoChart(document.getElementById('geochart-colors'));
chart.draw(data, options);
};
</script>
</head>
<body>
<div id="geochart-colors" style="width: 100%; height: 100%;"></div>
</body>
</html>
Is it possible to do so? How can I achieve something like the image attached?
I would really appreciate your time and help. Thank you!
I want to draw a line between two points (zip codes in this case) on map using googles geochart function. Is that possible? For example, I would like to have a line drawn between zip 07206 and 78746 below:
<html>
<head>
<script type='text/javascript' src='https://www.google.com/jsapi'></script>
<script type='text/javascript'>
google.load('visualization', '1', { 'packages': ['geochart'] });
google.setOnLoadCallback(drawMarkersMap);
function drawMarkersMap() {
var data = google.visualization.arrayToDataTable([
['Region', 'Total'],
['07206', 500],
['78746', 250],
['90040', 1000],
]);
var options = {
sizeAxis: { minValue: 0, maxValue: 100 },
region: 'US', // United States
resolution: 'provinces',
displayMode: 'markers',
colorAxis: { colors: ['#e7711c', '#4374e0'] } // orange to blue
};
var chart = new google.visualization.GeoChart(document.getElementById('chart_div'));
chart.draw(data, options);
};
</script>
</head>
<body>
<div id="chart_div" style="width: 900px; height: 500px;"></div>
</body>
</html>
VectorWorkz GeoChart allows you to draw lines between two points, it enables animation for the lines and also you can customize the look and feel of the connection lines. It is briefly illustrated in this online sample(Click on "Flight Routes" in the left menu).
I had a need for this just recently. Fairly simple solution is to draw 0px points (markers) on the map and then do a jQuery loop through the points and create a element with the x1 / y1 values of the first point, the x2/y2 values of the second point, etc.
I am using Google Line Chart for my project. I need to manipulate points on the line chart based on the values. For example, if the value is less then 170 then it shows default point on line chart and if it is greater then 170, it should show different point on the line chart. how should i put different color for points in the line chart for one series? Here is my code:
<html>
<head>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Date', 'Record'],
['4/1', 165],
['4/2', 160],
['4/3', 163],
['4/4', 173]
]);
var options = {
title: 'Line Chart', pointSize : 5 };
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>`enter code here`
<div id="chart_div" style="width: 900px; height: 500px;"></div>
</body>
</html>
Plese help me on this.
You cannot color points individually using the current Google Visualization API. Any coloring must be done with separate series.
In your case, you can achieve the desired result with a workaround. Here is what I presume you want:
This code should give you the result you want:
<html>
<head>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Date');
data.addColumn('number', 'Line');
data.addColumn('number', 'Under 170');
data.addColumn('number', 'Over 170');
data.addRows([
['4/1', 165, 165, null],
['4/2', 160, 160, null],
['4/3', 163, 163, null],
['4/4', 173, null, 173]
]);
var options = {
title: 'Line Chart',
pointSize : 5,
series: [{color: 'black', pointSize: 0}, {color: 'red', lineWidth: 0}, {color: 'blue', lineWidth: 0}]
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>`enter code here`
<div id="chart_div" style="width: 900px; height: 500px;"></div>
</body>
</html>
Basically, what you have to do is:
Create 3 different series
One for the line (no points shown)
One for the points <170 (color 1)
One for the point >=170 (color 2)
Add all data values to series 1 (so there is a solid line)
Add points to series 2 that are <170, with all other values as null
Add points to series 3 that are >=170, with all other values as null
You can then use the series option to format the chart. The first series will determine the line color. The second series will determine the color for points <170. The third series will determine the color for point >=170.
I am creating a Google Geo Chart that includes cities in the US, South Korea, Taiwan, China, and India. If I use regions: 'world' tshe map will be too big and the city bubbles will be barely visible. I am using the following options:
var options = {
region: 'world',
displayMode: 'markers',
resolution: 'provinces'
}
Would it be possible to create a map with two or more regions?
For example, US and Asia. I am thinking about setting the regions using something like the following:
var options = {
region: '019','142',
displayMode: 'markers',
resolution: 'provinces'
}
No, it is not possible to create a map of two regions on the same map.
The reason is that Google geocharts rely on SVG images of whatever region they are showing, and there are a limited amount of SVG maps that exist within the API (this is why some countries do not work with resolution: 'provinces').
However, it is possible to create a datatable with data for both regions, and use the same datatable to populate two separate maps (one of each area).
For instance:
<!--
You are free to copy and use this sample in accordance with the terms of the
Apache license (http://www.apache.org/licenses/LICENSE-2.0.html)
-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>Google Visualization API Sample</title>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load('visualization', '1', {packages: ['geochart']});
function drawVisualization() {
var data = google.visualization.arrayToDataTable([
['Country', 'Popularity'],
['Germany', 200],
['United States', 300],
['Brazil', 400],
['Canada', 500],
['France', 600],
['RU', 700]
]);
// Draw First Chart
var geochart = new google.visualization.GeoChart(
document.getElementById('visualization'));
geochart.draw(data, {width: 556, height: 347, region: '019', resolution: 'countries'});
// Draw Second Chart
var geochart2 = new google.visualization.GeoChart(
document.getElementById('visualization2'));
geochart2.draw(data, {width: 556, height: 347, region: '150', resolution: 'countries'});
}
google.setOnLoadCallback(drawVisualization);
</script>
</head>
<body style="font-family: Arial;border: 0 none;">
<div id="visualization"></div>
<div id="visualization2"></div>
</body>
</html>
Also note that the "Americas" region (019) is as tall as the world map, and won't actually save you any space over "world". I would suggest using North America or just 'US' if there aren't any markers in Canada or Mexico.
Is it possible to attach an onclick method to the elements within a Google Visualization line chart? For example, if a user clicks on point within the chart I want to send the user to a page with more details. I've gone all through the documentation and can't find an example of how to do this.
I see that there are methods for events (from the documentation) but with no clear example it's not making much sense.
Thanks!
You can do this using a 'select' event, which will be triggered each time a user clicks on a point on the line chart. I've included a working example below, including the redirect with a couple of values. The Google code playground has a nice example of how to use event handlers on a table - the same type of functionality can be used across most of the visualizations.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load('visualization', '1.1', {packages: ['barchart']});
</script>
<script type="text/javascript">
function drawVisualization() {
// Create and populate the data table.
var data = new google.visualization.DataTable();
data.addColumn('string', 'Year');
data.addColumn('number', 'Sales');
data.addColumn('number', 'Expenses');
data.addRows(4);
data.setValue(0, 0, '2004');
data.setValue(0, 1, 1000);
data.setValue(0, 2, 400);
data.setValue(1, 0, '2005');
data.setValue(1, 1, 1170);
data.setValue(1, 2, 460);
data.setValue(2, 0, '2006');
data.setValue(2, 1, 660);
data.setValue(2, 2, 1120);
data.setValue(3, 0, '2007');
data.setValue(3, 1, 1030);
data.setValue(3, 2, 540);
chart = new google.visualization.LineChart(document.getElementById('visualization'));
chart.draw(data, {width: 400, height: 240, title: 'Company Performance',
vAxis: {title: 'Year', titleTextStyle: {color: 'red'}}
});
// a click handler which grabs some values then redirects the page
google.visualization.events.addListener(chart, 'select', function() {
// grab a few details before redirecting
var selection = chart.getSelection();
var row = selection[0].row;
var col = selection[0].column;
var year = data.getValue(row, 0);
location.href = 'http://www.google.com?row=' + row + '&col=' + col + '&year=' + year;
});
}
google.setOnLoadCallback(drawVisualization);
</script>
</head>
<body>
<div id="visualization" style="width: 600px; height: 400px;"></div>
</body>
</html>
getSelection().column is not working, it return an "unknown" value. The issue was posted in the Google Visualization API bug reports page.