Capturing click events on a stacked area chart with nvd3

Question

Capturing click events on a stacked area chart with nvd3

Could someone assist me in capturing the click event on a nvd3 stacked area chart? I have successfully managed to capture tooltip show and hide events but am struggling with the click event. How can I obtain information about the clicked point? Please help. Here is the link to the Plunker.

This is my chart configuration:

chart: {
                type: 'stackedAreaChart',
                height: 450,
                x: function (d) { return d[0]; },
                y: function (d) { return d[1]; },
                showValues: true,
                valueFormat: function (d) { return d3.format(',.4f')(d); },
                dispatch: {
                    tooltipShow: function (e) { console.log('! tooltip SHOW !') },
                    tooltipHide: function (e) { console.log('! tooltip HIDE !') },
                    beforeUpdate: function (e) { console.log('! before UPDATE !') },
                    elementClick: function (e) { alert('clicked');}

                }
            }
        };

javascript angularjs nvd3.js angularjs-nvd3-directives

Answer 1

Answer №1

To get the desired functionality, make sure to enclose the dispatch block within a stacked block:

stacked: {
    dispatch: {
        tooltipShow: function (e) { console.log('! tooltip SHOW !') },
        tooltipHide: function (e) { console.log('! tooltip HIDE !') },
        beforeUpdate: function (e) { console.log('! before UPDATE !') },
        elementClick: function (e) { alert('clicked');}
    }
}

Keep in mind that although this will allow you to capture some events, such as tooltipShow and tooltipHide, you may still not receive the elementClick event from the stacked chart layer. Instead, consider capturing the areaClick event which triggers when clicking inside the stacked area.

For better control over interactivity, it is advised to intercept dispatch events from the "interactive" layer by modifying your code as follows:

chart: {
    type: 'stackedAreaChart',
    ...
    interactiveLayer: {
        dispatch: {
            elementMousemove: function(e) {
                console.log(e.mouseX + " " + e.mouseY + " " + e.pointXValue);
            },
            elementClick: function(e) {
                console.log(e.mouseX + " " + e.mouseY + " " + e.pointXValue);
            }
        }
    }
}

Answer 2

To get the desired functionality, make sure to enclose the dispatch block within a stacked block:

stacked: {
    dispatch: {
        tooltipShow: function (e) { console.log('! tooltip SHOW !') },
        tooltipHide: function (e) { console.log('! tooltip HIDE !') },
        beforeUpdate: function (e) { console.log('! before UPDATE !') },
        elementClick: function (e) { alert('clicked');}
    }
}

Keep in mind that although this will allow you to capture some events, such as tooltipShow and tooltipHide, you may still not receive the elementClick event from the stacked chart layer. Instead, consider capturing the areaClick event which triggers when clicking inside the stacked area.

For better control over interactivity, it is advised to intercept dispatch events from the "interactive" layer by modifying your code as follows:

chart: {
    type: 'stackedAreaChart',
    ...
    interactiveLayer: {
        dispatch: {
            elementMousemove: function(e) {
                console.log(e.mouseX + " " + e.mouseY + " " + e.pointXValue);
            },
            elementClick: function(e) {
                console.log(e.mouseX + " " + e.mouseY + " " + e.pointXValue);
            }
        }
    }
}

Capturing click events on a stacked area chart with nvd3

Answer №1

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