Related
Graph: Number of Persons v DateTime
2004-12-23 15:25:01,8
2004-12-23 15:26:01,5
2004-12-23 15:27:01,5
2004-12-23 15:28:01,4
2004-12-23 15:29:01,4
2004-12-24 10:30:01,13
2004-12-24 10:31:01,12
2004-12-24 10:32:01,12
2004-12-24 10:33:01,13
2004-12-24 10:34:01,13
2004-12-24 10:35:01,13
As we can see there is no data between 2004-12-23 15:29:01 and 2004-12-24 10:30:01 but still the Google Chart shows me a gap and connects the two datapoints when using LineChart. Also I avoid making the dates string as then I would get no yaxis markings, because of the huge date-time.
I am new to using Google Charts, can this be avoided?
function drawBasic() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Date-Time');
data.addColumn('number', ‘Available);
data.addRows(dataPoints);
console.log(data);
var options = {
title: ‘Availability',
legend: {position: 'bottom' },
hAxis: {
title: 'Time',
/*
viewWindow: {
min: [7, 30, 0],
max: [17, 30, 0]
}*/
},
vAxis: {
title: 'Number of people available’
}
};
var chart = new google.visualization.LineChart(
document.getElementById('chart_div'));
chart.draw(data, options);
}
if you use string values, rather than date values, no gap will be displayed...
var dataPoints = [
['2004-12-23 15:25:01', 8],
['2004-12-23 15:26:01', 5],
['2004-12-23 15:27:01', 5],
...
also, here, needed to add more room at the bottom of the chart for the labels,
as well as increase the default height...
chartArea: {
bottom: 128
},
height: 400
see following working snippet...
google.charts.load('current', {
packages: ['corechart']
}).then(drawBasic);
function drawBasic() {
var dataPoints = [
['2004-12-23 15:25:01', 8],
['2004-12-23 15:26:01', 5],
['2004-12-23 15:27:01', 5],
['2004-12-23 15:28:01', 4],
['2004-12-23 15:29:01', 4],
['2004-12-24 10:30:01', 13],
['2004-12-24 10:31:01', 12],
['2004-12-24 10:32:01', 12],
['2004-12-24 10:33:01', 13],
['2004-12-24 10:34:01', 13],
['2004-12-24 10:35:01', 13]
];
var data = new google.visualization.DataTable();
data.addColumn('string', 'Date-Time');
data.addColumn('number', 'Available');
data.addRows(dataPoints);
var options = {
title: 'Availability',
legend: {position: 'bottom'},
hAxis: {
title: 'Time',
},
vAxis: {
title: 'Number of people available'
},
chartArea: {
bottom: 128
},
height: 400
};
var chart = new google.visualization.LineChart(
document.getElementById('chart_div')
);
chart.draw(data, options);
}
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>
I am trying to create a google chart from the below data.
Year Product Value
2015 A 10
2015 B 20
2016 C 30
2016 D 40
Is this the right data for my google chart, using arrayToDataTable function, but not getting the desired output.
I want Product as the legends, Year as the xAxis value and the value should define the bars.
Thanks
each chart type has a specific data format you can check
typically, for most chart types, all columns after the first should be a number
unless you're using annotations, tooltips, or some other role
as such, the data would need to look similar to...
['Year', 'A', 'B', 'C', 'D'],
['2015', 10, 20, null, null],
['2016', null, null, 30, 40],
see following working snippet...
google.charts.load('current', {
callback: function () {
var data = google.visualization.arrayToDataTable([
['Year', 'A', 'B', 'C', 'D'],
['2015', 10, 20, null, null],
['2016', null, null, 30, 40],
]);
var chart = new google.visualization.BarChart(document.getElementById('chart_div'));
chart.draw(data);
},
packages: ['corechart']
});
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>
EDIT
to transpose the data from sql server into the format preferred by the chart,
first create a data view, with calculated columns for each unique product
then aggregate the view, grouping on year, using the group() method
use the aggregated data table to draw the chart
see following working snippet...
google.charts.load('current', {
callback: function () {
// raw table data
var data = google.visualization.arrayToDataTable([
['Year', 'Product', 'Value'],
[2015, 'A', 10],
[2015, 'B', 20],
[2016, 'C', 30],
[2016, 'D', 40]
]);
// format year as string
var formatYear = new google.visualization.NumberFormat({
pattern: '0000'
});
formatYear.format(data, 0);
// create data view
var view = new google.visualization.DataView(data);
// init column arrays
var aggColumns = [];
// use formatted year as first column
var viewColumns = [{
calc: function (dt, row) {
return dt.getFormattedValue(row, 0);
},
label: data.getColumnLabel(0),
type: 'string'
}];
// build view & agg column for each product
data.getDistinctValues(1).forEach(function (product, index) {
// add view column
viewColumns.push({
calc: function (dt, row) {
if (dt.getValue(row, 1) === product) {
return dt.getValue(row, 2);
}
return null;
},
label: product,
type: 'number'
});
// add agg column
aggColumns.push({
aggregation: google.visualization.data.sum,
column: index + 1,
label: product,
type: 'number'
});
});
// set view columns
view.setColumns(viewColumns);
// agg view by year
var group = google.visualization.data.group(
view,
[0],
aggColumns
);
// draw chart
var chart = new google.visualization.BarChart(document.getElementById('chart_div'));
chart.draw(group);
},
packages: ['corechart']
});
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>
I use Material column charts in my Web App.
and I have following out
and codes are below,
google.charts.load('current', {'packages':['bar']});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Structure', 'Estimated', 'Actual'],
['hours', 6, 8],
['hours2', 20, 18],
]);
var options = {
chart: {
title: 'Structures by Hours',
subtitle: 'Estimated vs Actual',
}
};
var chart = new google.charts.Bar(document.getElementById('columnchart_hours'));
chart.draw(data, options);
What I want to do two things / need your hand, (on red circled area the image.)
to name the Y-Axis as Hours
and make the same axis scale 2 hours by 2 hours so that the Y-Axis / Hours Axis become 2, 4, 6, 8, 10 so on.
Thanks in advance,
Need to set configuration options for the vAxis.
vAxis: {
title: 'Hours',
ticks: [0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20]
}
Use title for the axis label.
Supply an array to ticks for the axis tick marks.
However, it doesn't appear ticks works for Material charts.
Note the options have to be converted as well...
google.charts.Bar.convertOptions
This example shows both a Core chart and a Material chart...
google.load('visualization', '1', {
packages: ['corechart', 'bar'],
callback: drawBarChart
});
function drawBarChart() {
var data = google.visualization.arrayToDataTable([
['Structure', 'Estimated', 'Actual'],
['hours', 6, 8],
['hours2', 20, 18],
]);
var options = {
chart: {
title: 'Structures by Hours',
subtitle: 'Estimated vs Actual',
},
vAxis: {
title: 'Hours',
ticks: [0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20]
}
};
var chart = new google.visualization.ColumnChart(document.getElementById('columnchart_hours'));
chart.draw(data, options);
var chart2 = new google.charts.Bar(document.getElementById('columnchart_hours2'));
chart2.draw(data, google.charts.Bar.convertOptions(options));
}
<script src="https://www.google.com/jsapi"></script>
<div id="columnchart_hours"></div>
<div id="columnchart_hours2"></div>
I am attempting to create multiple Google Charts, but I can't get it to work. I've tried everything I could find on Stack Overflow. I most recently attempted this fix, but it didn't work. I think I may be missing something. Can anyone see anything wrong with the code as it stands now?
Expected Behavior:
Page displays bar graph. Then, a line graph is displayed underneath the bar graph.
Current Behavior:
Page displays bar graph. Line graph does not display.
Here is JSFiddle. On a side note, the JavaScript only seems to work inline on JSFiddle. If I moved it into the JavaScript section, it did not function properly. Maybe this has something to do with the external resource that was called?
Regardless, I am currently doing this all inline for this experiment.
HTML:
<!DOCTYPE html>
<html>
<head>
<script src="https://www.google.com/jsapi" type="text/javascript">
</script>
<script type="text/javascript">
// Load the Visualization API and the chart packages.
google.load('visualization', '1.1', {
packages: ['line', 'bar', 'corechart']
});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
// Callback that creates and populates a data table,
// instantiates the charts, passes in the data and
// draws them.
function drawChart() {
// Create the data table.
var BarData = new google.visualization.arrayToDataTable([
['', 'Customer', 'Segment Avg'],
['TTM Sales', 4, 2],
['TTM Orders', 5, 3],
['TTM Categories', 7, 4]
]);
// Create the data table.
var LineData = new google.visualization.arrayToDataTable([
['Year', 'Customer', 'Segment Avg'],
['2011', 4, 5],
['2012', 5, 3],
['2013', 4, 2]
]);
// Set chart options
var BarOptions = {
chart: {
title: 'Performance',
},
width: 900,
height: 500
};
// Set chart options
var LineOptions = {
chart: {
title: 'Sales History'
},
width: 900,
height: 500
};
// Instantiate and draw our chart, passing in some options.
var BarChart = new google.charts.Bar(document.getElementById(
'bar_chart'));
BarChart.draw(BarData, BarOptions);
var LineChart = new google.charts.Line(document.getElementById(
'line_chart'));
LineChart.draw(LineData, LineOptions);
};
</script>
<title>Test Chart Page</title>
</head>
<body>
<!--Divs that will hold the charts-->
<div id="bar_chart"></div>
<div id="line_chart"></div>
</body>
</html>
It seems some changes have been made in the latest version of Google Charts API that causes this behavior, but there is a reliable way to render multiple charts on a single page. The idea is to render the next chart once the previous one is rendered, for that purpose you could utilize ready event handler.
Having said that, replace
var barChart = new google.charts.Bar(document.getElementById('bar_chart'));
barChart.draw(barData, barOptions);
var lineChart = new google.charts.Line(document.getElementById('line_chart'));
lineChart.draw(lineData, lineOptions);
with
var barChart = new google.charts.Bar(document.getElementById('bar_chart'));
google.visualization.events.addOneTimeListener(barChart, 'ready', function () {
var lineChart = new google.charts.Line(document.getElementById('line_chart'));
lineChart.draw(lineData, lineOptions);
});
barChart.draw(barData, barOptions);
Working example
google.load('visualization', '1.1', {
packages: ['line', 'bar', 'corechart']
});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawCharts);
function drawCharts() {
// Create the data table.
var barData = new google.visualization.arrayToDataTable([
['', 'Customer', 'Segment Avg'],
['TTM Sales', 4, 2],
['TTM Orders', 5, 3],
['TTM Categories', 7, 4]
]);
// Create the data table.
var lineData = new google.visualization.arrayToDataTable([
['Year', 'Customer', 'Segment Avg'],
['2011', 4, 5],
['2012', 5, 3],
['2013', 4, 2]
]);
// Set chart options
var barOptions = {
chart: {
title: 'Performance',
},
width: 900,
height: 500
};
// Set chart options
var lineOptions = {
chart: {
title: 'Sales History'
},
width: 900,
height: 500
};
var barChart = new google.charts.Bar(document.getElementById('bar_chart'));
google.visualization.events.addOneTimeListener(barChart, 'ready', function () {
var lineChart = new google.charts.Line(document.getElementById('line_chart'));
lineChart.draw(lineData, lineOptions);
});
barChart.draw(barData, barOptions);
};
<script src="https://www.google.com/jsapi" type="text/javascript"></script>
<div id="bar_chart"></div>
<div id="line_chart"></div>
Works with setTimeout:
// Instantiate and draw our chart, passing in some options.
var BarChart = new google.charts.Bar(document.getElementById(
'bar_chart'));
setTimeout(function() {
BarChart.draw(BarData, BarOptions);
}, 0);
var LineChart = new google.charts.Line(document.getElementById(
'line_chart'));
setTimeout(function() {
LineChart.draw(LineData, LineOptions);
}, 1e3);
Updated JSFiddle
The code below works by creating the second chart inside of setTimeout.
I don't know what is causing the problem,
but at least you have a workaround.
fiddle
<script type="text/javascript">
// Load the Visualization API and the chart packages.
google.load('visualization', '1.1', {
packages: ['line', 'bar', 'corechart']
});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
// Callback that creates and populates a data table,
// instantiates the charts, passes in the data and
// draws them.
function drawChart() {
// Create the data table.
var BarData = new google.visualization.arrayToDataTable([
['', 'Customer', 'Segment Avg'],
['TTM Sales', 4, 2],
['TTM Orders', 5, 3],
['TTM Categories', 7, 4]
]);
// Create the data table.
var LineData = new google.visualization.arrayToDataTable([
['Year', 'Customer', 'Segment Avg'],
['2011', 4, 5],
['2012', 5, 3],
['2013', 4, 2]
]);
// Set chart options
var BarOptions = {
chart: {
title: 'Performance',
},
width: 900,
height: 500
};
// Set chart options
var LineOptions = {
chart: {
title: 'Sales History'
},
width: 900,
height: 500
};
// Instantiate and draw our chart, passing in some options.
var BarChart = new google.charts.Bar(document.getElementById(
'bar_chart'));
var LineChart = new google.charts.Line(document.getElementById(
'line_chart'));
LineChart.draw(LineData, LineOptions);
setTimeout(function(){
BarChart.draw(BarData, BarOptions);
},50);
};
</script>
<body>
<!--Divs that will hold the charts-->
<div id="bar_chart"></div>
<div id="line_chart"></div>
</body>
Google fixed this timing issue in a recent release, available with the frozen version loader: https://developers.google.com/chart/interactive/docs/library_loading_enhancements#frozen-versions
Relevant thread: https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/google-visualization-api/KulpuT418cg/yZieM8buCQAJ
I need to create a Line Chart using Google Charts API or any JS plugin like this:
Google charts has a trendlines option:
https://developers.google.com/chart/interactive/docs/gallery/trendlines
Example from their docs:
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Diameter', 'Age'],
[8, 37], [4, 19.5], [11, 52], [4, 22], [3, 16.5], [6.5, 32.8], [14, 72]]);
var options = {
title: 'Age of sugar maples vs. trunk diameter, in inches',
hAxis: {title: 'Diameter'},
vAxis: {title: 'Age'},
legend: 'none',
trendlines: { 0: {} } // Draw a trendline for data series 0.
};
var chart = new google.visualization.ScatterChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
I've used this with their LineChart without any problems.