The diminishing of Chart.js

After implementing chart.js, I encountered a strange issue where my charts would inexplicably shrink to nothing. It appears that there is a new bug in the chart.js library causing this unintended and unwanted shrinking effect.

var scanCountChart = new Chart("ScanCountChart", {
        type: "bar",
        data: {
            labels: xVals,
            datasets: [{
                backgroundColor: barColors,
                data: yVals
            }]
        },
        options: {
            plugins: {
                tooltip: {
                    titleFont: {
                        size: 50
                    },
                    bodyFont: {
                        size: 30
                    },
                    footerFont: {
                        size: 15 // there is no footer by default
                    }
                },
                legend: { display: false },
                zoom: {
                    limits: {
                        y: { min: 0, max: 100 },
                        y2: { min: -5, max: 5 }
                    },
                }
            },
            scales: {
                x: {
                    ticks: {
                        font: {
                            size: xFontSize
                        },
                        maxRotation: 45,
                        minRotation: 25
                    }
                },
                y: {
                    ticks: {
                        font: {
                            size: yFontSize
                        }
                    }
                }
            }
        }
    });

Answer №1

Providing a solution to my own query. It seems that including the parameter maintainAspectRatio: false resolves the issue.

let salesChart = new Chart("SalesChart", {
    type: "line",
    data: {
        labels: dates,
        datasets: [{
            backgroundColor: colors,
            data: values
        }]
    },
    options: {
maintainAspectRatio: false,  // *** Note : adding this is crucial to prevent an odd zoom out effect on the chart. 
        plugins: {
            tooltip: {
                titleFont: {
                    size: 50
                },
                bodyFont: {
                    size: 30
                },
                footerFont: {
                    size: 15 // default doesn't include a footer
                }
            },
            legend: { display: true },
            zoom: {
                limits: {
                    y: { min: 0, max: 100 },
                    y2: { min: -5, max: 5 }
                },
            }
        },
        scales: {
            x: {
                ticks: {
                    font: {
                        size: xFontSize
                    },
                    maxRotation: 45,
                    minRotation: 25
                }
            },
            y: {
                ticks: {
                    font: {
                        size: yFontSize
                    }
                }
            }
        }
    }
});

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