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Edit File: line_intervals.js

/* ------------------------------------------------------------------------------
 *
 *  # Google Visualization - line intervals
 *
 *  Google Visualization line chart with intervals demonstration
 *
 * ---------------------------------------------------------------------------- */

// Setup module
// ------------------------------

var GoogleLineIntervals = function() {

//
    // Setup module components
    //

// Line intervals chart
    var _googleLineIntervals = function() {
        if (typeof google == 'undefined') {
            console.warn('Warning - Google Charts library is not loaded.');
            return;
        }

// Initialize chart
        google.charts.load('current', {
            callback: function () {

// Draw chart
                drawLineIntervals();

// Resize on sidebar width change
                var sidebarToggle = document.querySelector('.sidebar-control');
                sidebarToggle && sidebarToggle.addEventListener('click', drawLineIntervals);

// Resize on window resize
                var resizeLineIntervals;
                window.addEventListener('resize', function() {
                    clearTimeout(resizeLineIntervals);
                    resizeLineIntervals = setTimeout(function () {
                        drawLineIntervals();
                    }, 200);
                });
            },
            packages: ['corechart']
        });

// Chart settings
        function drawLineIntervals() {

// Define charts element
            var line_intervals_element = document.getElementById('google-line-intervals');

// Data
            var data = new google.visualization.DataTable();
                data.addColumn('string', 'x');
                data.addColumn('number', 'values');
                data.addColumn({id:'i0', type:'number', role:'interval'});
                data.addColumn({id:'i1', type:'number', role:'interval'});
                data.addColumn({id:'i2', type:'number', role:'interval'});
                data.addColumn({id:'i2', type:'number', role:'interval'});
                data.addColumn({id:'i2', type:'number', role:'interval'});
                data.addColumn({id:'i2', type:'number', role:'interval'});

data.addRows([
                ['a', 100, 90, 110, 85, 96, 104, 120],
                ['b', 120, 95, 130, 90, 113, 124, 140],
                ['c', 130, 105, 140, 100, 117, 133, 139],
                ['d', 90, 85, 95, 85, 88, 92, 95],
                ['e', 70, 74, 63, 67, 69, 70, 72],
                ['f', 30, 39, 22, 21, 28, 34, 40],
                ['g', 80, 77, 83, 70, 77, 85, 90],
                ['h', 100, 90, 110, 85, 95, 102, 110]
            ]);

// The intervals data as narrow lines (useful for showing raw source data)
            var options_line_intervals = {
                fontName: 'Roboto',
                height: 400,
                pointSize: 7,
                curveType: 'function',
                backgroundColor: 'transparent',
                fontSize: 12,
                chartArea: {
                    left: '5%',
                    width: '94%',
                    height: 350
                },
                lineWidth: 3,
                intervals: {'style': 'line'}, // Use line intervals.
                tooltip: {
                    textStyle: {
                        fontName: 'Roboto',
                        fontSize: 13
                    }
                },
                vAxis: {
                    title: 'Number values',
                    titleTextStyle: {
                        fontSize: 13,
                        italic: false,
                        color: '#fff'
                    },
                    textStyle: {
                        color: '#fff'
                    },
                    baselineColor: '#697692',
                    gridlines:{
                        color: '#4b5975',
                        count: 10
                    },
                    minorGridlines: {
                        color: '#3e495f'
                    },
                    minValue: 0
                },
                hAxis: {
                    textStyle: {
                        color: '#fff'
                    }
                },
                legend: 'none',
                series: [{'color': '#66BB6A'}]
            };

// Draw chart
            var line_intervals = new google.visualization.LineChart(line_intervals_element);
            line_intervals.draw(data, options_line_intervals);
        }
    };

//
    // Return objects assigned to module
    //

return {
        init: function() {
            _googleLineIntervals();
        }
    }
}();

// Initialize module
// ------------------------------

GoogleLineIntervals.init();