Dynamically change colors of google pie chart - charts

I am using google pie chart how can I set colors when my data comes dynamically.
I am using below logic to set colors
var options = {
width: 400,
height: 240,
title: 'Toppings I Like On My Pizza',
colors: ['#e0440e', '#e6693e', '#ec8f6e', '#f3b49f', '#f6c7b6']
};
chart.draw(data, options);
but in these case the data is comes in 5 array but how to handle when data is dynamically comes.
Thank you in advance.

Related

Dateformat Google Chart Gantt

I'm trying to use the Google Charts library to display a Gantt, but I can't format the horizontal axis dates.
i tried
var options = {
height: 275,
hAxis: {
format: 'M/d/yy',
},
};
chart.draw(data, options);
but no success, any tips?

Google Bar charts - ToolTips not showing

I have created a bar chart using google charts, this is a CORE Chart
I have tried getting the bar chart to change colours and adding an additional tooltip information to it, so that the tooltip shows a bit more information
I have gone through the google documentation and i cant see what i am doing wrong
For easy reading this is the output of my code on the source
google.charts.load("current", {packages:['corechart']});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var exams = [["Date", "Score",({type: 'string', role: 'tooltip'})], ["18 Oct", 39,"TEST"], ["26 Oct", 20,"TEST"], ["26 Oct", 0,"TEST"], ["27 Oct", 0,"TEST"], ["27 Oct", 0,"TEST"]];
if(exams.length > 1){
var data = google.visualization.arrayToDataTable(exams);
var view = new google.visualization.DataView(data);
view.setColumns([0, 1]);
var options = {
title: "Results",
width: 1170,
height: 700,
bar: {groupWidth: "95%"},
legend: { position: "none" }
};
var chart = new google.visualization.ColumnChart(document.getElementById("columnchart_values"));
chart.draw(view, options);
}
else{
$("#columnchart_values").html('No Data found to show graph');
}
}
This is the google documentation i have been following, its slightly different
to mine as i am getting my data from a database, but it should give the same output.
I have gone through many examples and i am replicating them as close as possible and just not having any luck
https://developers.google.com/chart/interactive/docs/customizing_tooltip_content
I also have the exact same problem with color, i cant get colors on bar charts to change both having the same problem that it just doesn't do anything
Am i missing something??
the tooltip column is not being included in the data view.
view.setColumns([0, 1]);
to add the tooltip...
view.setColumns([0, 1, 2]);

How to specify a size for google pie charts?

I'm having trouble changing the size of a google pie chart that I have made. I'm trying to draw multiple pie charts with the size of each chart proportional to the total amount of data that I'm feeding it. I am aware that we are able to change the size of the div container of the chart by adding options to the chart like as follows:
var options = {width: 400, height: 300};
However, what I'm interested in, is not changing the size of the div, but of the actual pie chart itself.
Is there any way I can change the radius of the pie chart?
I've searched around and wasn't able to find anything. Here is quick paint of what I mean:
As you can see, what I would like is for the div to remain on the same size but the size of the circle to change, depending on what value I feed it.
Any help is appreciated
try the option for chartArea
e.g.
chartArea: {width: 400, height: 300}
Try the example as below
http://jsfiddle.net/toddlevy/c59HH/
function initChart() {
var options = {
legend:'none',
width: '100%',
height: '100%',
pieSliceText: 'percentage',
colors: ['#0598d8', '#f97263'],
chartArea: {
left: "3%",
top: "3%",
height: "94%",
width: "94%"
}
};

How to prevent legend labels being cut off in Google charts

With a Perl script I generate numerous Google Line Charts for 20 and more series of data at once.
The legend labels are of the form: a serial number appended by an iterating #counter.
Unfortunately, starting with #10 those counters are cut off:
Is there maybe a way to stop Google charts from doing that?
My quite simple chart code is below:
var data = { ...... };
function drawCharts() {
for (var csv in data) {
var x = new google.visualization.DataTable(data[csv]);
var options = {
title: csv,
width: 800,
height: 600
};
var chart = new google.visualization.LineChart(document.getElementById(csv));
chart.draw(x, options);
}
}
$(function() {
google.setOnLoadCallback(drawCharts);
});
To get full legend in your chart just add chartArea width and height as below
var options = {
title: csv,
width: 800,
height: 600,
chartArea: { width: "50%", height: "70%" }
};
Take a look at this jqfaq.com to get a working sample
in chartArea, make width 30 percent move the graph to the center.
chartArea: { width: "30%", height: "50%" }

Google Chart Background Color

I'm styling a google chart using the javascript api. I want to change the background of the area where the data is plotted. For some reason when I set background options like so:
chart.draw(data, { backgroundColor: { fill: "#F4F4F4" } })
It changes the the background of the whole chart and not the area where the data is plotted. Any ideas on how to only change the background of the plotted area?
Thanks
pass the options like this
var options = {
title: 'title',
width: 310,
height: 260,
backgroundColor: '#E4E4E4',
is3D: true
};
add this to your options:
'chartArea': {
'backgroundColor': {
'fill': '#F4F4F4',
'opacity': 100
},
}
The proper answer is that it depends if it is classic Google Charts or Material Google Charts. If you use classic version of the Google Charts, multiple of the above suggestion work. However if you use newer Material type Google charts then you have to specify the options differently, or convert them (see google.charts.Bar.convertOptions(options) below). On top of that in case of material charts if you specify an opacity for the whole chart, the opacity (only) won't apply for the chart area. So you need to explicitly specify color with the opacity for the chart area as well even for the same color combination.
In general: material version of Google Charts lack some of the features what the Classic has (slanted axis labels, trend lines, custom column coloring, Combo charts to name a few), and vica versa: the number formating and the dual (triple, quadruple, ...) axes are only supported with the Material version.
In case a feature is supported by both the Material chart sometimes requires different format for the options.
<body>
<div id="classic_div"></div>
<div id="material_div"></div>
</body>
JS:
google.charts.load('current', { 'packages': ['corechart', 'bar'] });
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Year', 'Sales', 'Expenses'],
['2004', 1000, 400],
['2005', 1170, 460],
['2006', 660, 1120],
['2007', 1030, 540],
['2009', 1120, 580],
['2010', 1200, 500],
['2011', 1250, 490],
]);
var options = {
width: 1000,
height: 600,
chart: {
title: 'Company Performance',
subtitle: 'Sales, Expenses, and Profit: 2014-2017'
},
// Accepts also 'rgb(255, 0, 0)' format but not rgba(255, 0, 0, 0.2),
// for that use fillOpacity versions
// Colors only the chart area, simple version
// chartArea: {
// backgroundColor: '#FF0000'
// },
// Colors only the chart area, with opacity
chartArea: {
backgroundColor: {
fill: '#FF0000',
fillOpacity: 0.1
},
},
// Colors the entire chart area, simple version
// backgroundColor: '#FF0000',
// Colors the entire chart area, with opacity
backgroundColor: {
fill: '#FF0000',
fillOpacity: 0.8
},
}
var classicChart = new google.visualization.BarChart(document.getElementById('classic_div'));
classicChart.draw(data, options);
var materialChart = new google.charts.Bar(document.getElementById('material_div'));
materialChart.draw(data, google.charts.Bar.convertOptions(options));
}
Fiddle demo: https://jsfiddle.net/csabatoth/v3h9ycd4/2/
It is easier using the options.
drawChart() {
// Standard google charts functionality is available as GoogleCharts.api after load
const data = GoogleCharts.api.visualization.arrayToDataTable([
['Chart thing', 'Chart amount'],
['Na Meta', 50],
['Abaixo da Meta', 22],
['Acima da Meta', 10],
['Refugos', 15]
]);
let options = {
backgroundColor: {
gradient: {
// Start color for gradient.
color1: '#fbf6a7',
// Finish color for gradient.
color2: '#33b679',
// Where on the boundary to start and
// end the color1/color2 gradient,
// relative to the upper left corner
// of the boundary.
x1: '0%', y1: '0%',
x2: '100%', y2: '100%',
// If true, the boundary for x1,
// y1, x2, and y2 is the box. If
// false, it's the entire chart.
useObjectBoundingBoxUnits: true
},
},
};
const chart = new GoogleCharts.api.visualization.ColumnChart(this.$.chart1);
chart.draw(data, options);
}
I'm using polymer that's why i'm using this.$.cart1, but you can use selectedbyid, no problem.
Have you tried using backgroundcolor.stroke and backgroundcolor.strokewidth?
See Google Charts documentation.
If you want to do like this then it will help. I use stepped area chart in the combo chart from the Google library...
where the values for each stepped area is the value for ticks.
Here is the link for jsfiddle code
Simply add background option
backgroundColor: {
fill:'red'
},
here is the fiddle link https://jsfiddle.net/amitjain/q3tazo7t/
You can do it just with CSS:
#salesChart svg > rect { /*#salesChart is ID of your google chart*/
fill: #F4F4F4;
}