Topic: Line Chart only appearing after window resize

shawn1 pro asked 6 years ago

Good day, I have the sample Line chart only appearing after I resize the window. If I change the window screen, inspect element etc it suddenly appears. What is the reason for this? Is there a known fix? (Note Jquery etc are being loaded by a layout, this is all being injected as a partial.)
<div id="ChartDiv">
    <canvas id="myChart"></canvas>
    <button id="clickMe" type="button" class="btn btn-primary btn-lg btn-block">Get sales data</button>


$(function () {

    var data = {
        labels: ["January", "February", "March", "April", "May", "June", "July"],
        datasets: [
                label: "My First dataset",
                fillColor: "rgba(220,220,220,0.2)",
                strokeColor: "rgba(220,220,220,1)",
                pointColor: "rgba(220,220,220,1)",
                pointStrokeColor: "#fff",
                pointHighlightFill: "#fff",
                pointHighlightStroke: "rgba(220,220,220,1)",
                data: [65, 59, 80, 81, 56, 55, 40]
                label: "My Second dataset",
                fillColor: "rgba(151,187,205,0.2)",
                strokeColor: "rgba(151,187,205,1)",
                pointColor: "rgba(151,187,205,1)",
                pointStrokeColor: "#fff",
                pointHighlightFill: "#fff",
                pointHighlightStroke: "rgba(151,187,205,1)",
                data: [28, 48, 40, 19, 86, 27, 90]

    var option = {
    responsive: true,
    }; = {
        // Boolean - Whether to animate the chart
        animation: true,

        // Number - Number of animation steps
        animationSteps: 60,

        // String - Animation easing effect
        // Possible effects are:
        // [easeInOutQuart, linear, easeOutBounce, easeInBack, easeInOutQuad,
        //  easeOutQuart, easeOutQuad, easeInOutBounce, easeOutSine, easeInOutCubic,
        //  easeInExpo, easeInOutBack, easeInCirc, easeInOutElastic, easeOutBack,
        //  easeInQuad, easeInOutExpo, easeInQuart, easeOutQuint, easeInOutCirc,
        //  easeInSine, easeOutExpo, easeOutCirc, easeOutCubic, easeInQuint,
        //  easeInElastic, easeInOutSine, easeInOutQuint, easeInBounce,
        //  easeOutElastic, easeInCubic]
        animationEasing: "easeOutQuart",

        // Boolean - If we should show the scale at all
        showScale: true,

        // Boolean - If we want to override with a hard coded scale
        scaleOverride: false,

        // ** Required if scaleOverride is true **
        // Number - The number of steps in a hard coded scale
        scaleSteps: null,
        // Number - The value jump in the hard coded scale
        scaleStepWidth: null,
        // Number - The scale starting value
        scaleStartValue: null,

        // String - Colour of the scale line
        scaleLineColor: "rgba(0,0,0,.1)",

        // Number - Pixel width of the scale line
        scaleLineWidth: 1,

        // Boolean - Whether to show labels on the scale
        scaleShowLabels: true,

        // Interpolated JS string - can access value
        scaleLabel: "<%=value%>",

        // Boolean - Whether the scale should stick to integers, not floats even if drawing space is there
        scaleIntegersOnly: true,

        // Boolean - Whether the scale should start at zero, or an order of magnitude down from the lowest value
        scaleBeginAtZero: false,

        // String - Scale label font declaration for the scale label
        scaleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",

        // Number - Scale label font size in pixels
        scaleFontSize: 12,

        // String - Scale label font weight style
        scaleFontStyle: "normal",

        // String - Scale label font colour
        scaleFontColor: "#666",

        // Boolean - whether or not the chart should be responsive and resize when the browser does.
        responsive: false,

        // Boolean - whether to maintain the starting aspect ratio or not when responsive, if set to false, will take up entire container
        maintainAspectRatio: true,

        // Boolean - Determines whether to draw tooltips on the canvas or not
        showTooltips: true,

        // Function - Determines whether to execute the customTooltips function instead of drawing the built in tooltips (See [Advanced - External Tooltips](#advanced-usage-custom-tooltips))
        customTooltips: false,

        // Array - Array of string names to attach tooltip events
        tooltipEvents: ["mousemove", "touchstart", "touchmove"],

        // String - Tooltip background colour
        tooltipFillColor: "rgba(0,0,0,0.8)",

        // String - Tooltip label font declaration for the scale label
        tooltipFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",

        // Number - Tooltip label font size in pixels
        tooltipFontSize: 14,

        // String - Tooltip font weight style
        tooltipFontStyle: "normal",

        // String - Tooltip label font colour
        tooltipFontColor: "#fff",

        // String - Tooltip title font declaration for the scale label
        tooltipTitleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",

        // Number - Tooltip title font size in pixels
        tooltipTitleFontSize: 14,

        // String - Tooltip title font weight style
        tooltipTitleFontStyle: "bold",

        // String - Tooltip title font colour
        tooltipTitleFontColor: "#fff",

        // Number - pixel width of padding around tooltip text
        tooltipYPadding: 6,

        // Number - pixel width of padding around tooltip text
        tooltipXPadding: 6,

        // Number - Size of the caret on the tooltip
        tooltipCaretSize: 8,

        // Number - Pixel radius of the tooltip border
        tooltipCornerRadius: 6,

        // Number - Pixel offset from point x to tooltip edge
        tooltipXOffset: 10,

        // String - Template string for single tooltips
        tooltipTemplate: "<%if (label){%><%=label%>: <%}%><%= value %>",

        // String - Template string for multiple tooltips
        multiTooltipTemplate: "<%= value %>",

        // Function - Will fire on animation progression.
        onAnimationProgress: function () { },

        // Function - Will fire on animation completion.
        onAnimationComplete: function () { }

    // Get the context of the canvas element we want to select
    var ctx = document.getElementById("myChart").getContext('2d');
    var myLineChart = new Chart(ctx).Line(data, option); //'Line' defines type of the chart.


Marta Wierzbicka staff answered 6 years ago

Hello, When I copy and paste your code to me files it looks almost right, only tooltips didn't appear but when I delete additional global chart configuration, your chart looks fine. So unfortunately I can't see your issue. Maybe you should send me some your files on my mail and then I could help you. Because now I just don't see problem that you have. Best, Marta

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  • Technology: General Bootstrap questions
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