Quiche

Easy to use Node.js wrapper for Google Image Charts - Chart Tools (deprecated by Google) that also supports Image-Charts, a drop-in replacement for Google Image Charts.

Examples

Pie chart

!Look, a pie chart
!Look, a pie chart

var Quiche = require('quiche');

var pie = new Quiche('pie');
pie.setTransparentBackground(); // Make background transparent
pie.addData(3000, 'Foo', 'FF0000');
pie.addData(2900, 'Bas', '0000FF');
pie.addData(1500, 'Bar', '00FF00');
pie.setLabel(['Foo','Bas','Bar']); // Add labels to pie segments
var imageUrl = pie.getUrl(true); // First param controls http vs. https

Bar chart

!Bar charts are so cool
!Bar charts are so cool

var Quiche = require('quiche');

var bar = new Quiche('bar');
bar.setWidth(400);
bar.setHeight(265);
bar.setTitle('Some title or something');
bar.setBarStacked(); // Stacked chart
bar.setBarWidth(0);
bar.setBarSpacing(6); // 6 pixles between bars/groups
bar.setLegendBottom(); // Put legend at bottom
bar.setTransparentBackground(); // Make background transparent

bar.addData([19, 19, 21, 14, 19, 11, 10, 18, 19, 30], 'Foo', 'FF0000');
bar.addData([4, 3, 2, 3, 0, 0, 3, 4, 2, 2], 'bar', '0000FF');
bar.addData([10, 8, 2, 1, 18, 9, 20, 21, 19, 11], 'bin', '008000');
bar.addData([2, 1, 1, 1, 1, 7, 3, 6, 2, 7], 'bash', '00FF00');
bar.addData([1, 0, 0, 1, 2, 1, 0, 0, 0, 0], 'blah', '307000');

bar.setAutoScaling(); // Auto scale y axis
bar.addAxisLabels('x', ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10']);

var imageUrl = bar.getUrl(true); // First param controls http vs. https

Line chart

!Lines
!Lines

var quiche = require('quiche');

var chart = quiche('line');
chart.setTitle('Something with lines');
chart.addData([3000, 2900, 1500], 'Blah', '008000');
chart.addData([1000, 1500, 2000], 'Asdf', '0000FF');
chart.addAxisLabels('x', ['1800', '1900', '2000']);
chart.setAutoScaling();
chart.setAxixRange('y', 500, 3500, 250);
chart.setTransparentBackground();

var imageUrl = chart.getUrl(true); // First param controls http vs. https

QR Code

!QR Code

var quiche = require('quiche');

var qr = quiche('qr');
qr.setLabel('https://github.com/ryanrolds/quiche');
qr.setWidth(100);
qr.setHeight(100);

var url = qr.getUrl(true); // First param controls http vs. https

Note: currently not supported by Image-Charts

Documentation

Install

$ npm install quiche

API

$3

* line
* pie
* bar
* qr

$3

* chart.setWidth(height [number]);
* chart.setHeight(height [number]);
* chart.setTitle(title [string]);
* chart.setTitleColor(color [hex color]);
* chart.setTitleSize(size [number]);
* chart.setTitleRight();
* chart.setTitleLeft();
* chart.setLegendOrder(order [string])
* chart.setLegendLeft();
* chart.setLegendRight();
* chart.setLegendBottom();
* chart.setLegendTop();
* chart.setLegendVertical();
* chart.setLegendHorizontal();
* chart.setLegendHidden();
* chart.setLegendSize([number]);
* chart.setTransparentBackground();
* chart.addAxisLabels(axis [x | y | r], labels [array]);
* chart.addData(data [number | array], label [string], color [hex color]);
* chart.setAutoScaling();
* chart.setHostname(hostname [string]); // e.g. 'image-charts.com' to use Image-Charts (default is the deprecated 'chart.googleapis.com')
* chart.getUrl(https [boolean]); // true = https, false = http
* chart.getReq(https [boolean], callback [function]);
* chart.getPostReq(https [boolean], callback [function]);

$3

* pie.set3D();
* pie.setLabel();
* pie.addPercent();

$3

* bar.addData();
* bar.setBarWidth([number]);
* bar.setBarSpacing([number]);
* bar.setBarVertical();
* bar.setBarHorizontal();
* bar.setBarGrouped();
* bar.setBarStacked();
* bar.setBarOverlapped();
* bar.setAxisRange(axis ["x", "r", "y"], start [number], end [number], step [number]);

$3

* line.addData(data [number | array], label [string], color [hex color], thickness [number], line length [number], space length [number]);
* line.setSparklines();
* line.setXY();
* line.setAxisRange(axis ["x", "r", "y"], start [number], end [number], step [number]);

$3

* qr.setLabel(data [string]);
* qr.setEncoding(encoding [UTF-8 | Shift_JS | ISO-8859-1]);
* qr.setErrorCorrectionLevel(level [string]) // https://developers.google.com/chart/infographics/docs/qr_codes
* qr.setMargin(margin [number]); // Margin around graphic
* qr.setWidth(width [number]);
* qr.setHeight(height [number]);
* qr.getUrl(https [boolean]); // true = https, false = http

Features

* Pie charts
* Bar charts
* Auto scaling

TODO

* Documentation
* More chart types
* Better confict handling