D3 - Mouseover rect width

I have a Stackblitz here - https://stackblitz.com/edit/ng-graph-tooltip?file=src%2Fapp%2Fapp.component.html

I have a mouseover event when hovering over the bars

I trying to get the width and x pos of the bar when over it so I can position the tooltip

How can I get the width and x pos when over the bar.

Is this a problem with 'this' in Angular

d3.selectAll('.bar-opacity').on("mouseover", (d:any) => {



    const xPos = d3.select(this).attr('x');

    const rectWidth = d3.select(this).attr('width');



    console.log(xPos)



    let html = ''

      html += '<div class="">'+d.color+'</div>'

      html += '<div class="tooltip-block">'+d.day+'</div>'



    d3.select('.chart-tooltip')

      .style("left", d3.event.pageX + 5 + "px")

      .style("top", d3.event.pageY - 25 + "px")

      .html(html)



    d3.select('.chart-tooltip').style("display", null)

    })



    .on("mouseout", ()=>{

    d3.select('.chart-tooltip').style("display", "none")

      .transition()

      .duration(500)

    })

asked Nov 20 '18 at 12:31

ttmt

2,0671149101

First thing I noticed - Do not use arrow function in D3 event handlers. Try using it as a normal function to use this.

– CRayen
Nov 20 '18 at 12:48

This works here but in my actual code I'm using variables outside this function like this.margin.top in this example this doesn't work when the function is like that - stackblitz.com/edit/…

– ttmt
Nov 20 '18 at 13:13

What is the problem? Using a normal function like you did in the stackblitz allows you to successfully get the width and pos...

– Zim
Nov 20 '18 at 13:23

Using a normal function I cant access things like this.margin.top. I'll post a separate question

– ttmt
Nov 20 '18 at 13:27

As explained here: stackoverflow.com/questions/53204937/… you can use an arrow function with the third argument of the callback (datum,index,elements) => { const coords = d3.mouse(elements[index]); };

– David Lemon
Nov 20 '18 at 14:03

add a comment |

I have a Stackblitz here - https://stackblitz.com/edit/ng-graph-tooltip?file=src%2Fapp%2Fapp.component.html

I have a mouseover event when hovering over the bars

I trying to get the width and x pos of the bar when over it so I can position the tooltip

How can I get the width and x pos when over the bar.

Is this a problem with 'this' in Angular

d3.selectAll('.bar-opacity').on("mouseover", (d:any) => {



    const xPos = d3.select(this).attr('x');

    const rectWidth = d3.select(this).attr('width');



    console.log(xPos)



    let html = ''

      html += '<div class="">'+d.color+'</div>'

      html += '<div class="tooltip-block">'+d.day+'</div>'



    d3.select('.chart-tooltip')

      .style("left", d3.event.pageX + 5 + "px")

      .style("top", d3.event.pageY - 25 + "px")

      .html(html)



    d3.select('.chart-tooltip').style("display", null)

    })



    .on("mouseout", ()=>{

    d3.select('.chart-tooltip').style("display", "none")

      .transition()

      .duration(500)

    })

asked Nov 20 '18 at 12:31

ttmt

2,0671149101

First thing I noticed - Do not use arrow function in D3 event handlers. Try using it as a normal function to use this.

– CRayen
Nov 20 '18 at 12:48

This works here but in my actual code I'm using variables outside this function like this.margin.top in this example this doesn't work when the function is like that - stackblitz.com/edit/…

– ttmt
Nov 20 '18 at 13:13

What is the problem? Using a normal function like you did in the stackblitz allows you to successfully get the width and pos...

– Zim
Nov 20 '18 at 13:23

Using a normal function I cant access things like this.margin.top. I'll post a separate question

– ttmt
Nov 20 '18 at 13:27

As explained here: stackoverflow.com/questions/53204937/… you can use an arrow function with the third argument of the callback (datum,index,elements) => { const coords = d3.mouse(elements[index]); };

– David Lemon
Nov 20 '18 at 14:03

add a comment |

I have a Stackblitz here - https://stackblitz.com/edit/ng-graph-tooltip?file=src%2Fapp%2Fapp.component.html

I have a mouseover event when hovering over the bars

I trying to get the width and x pos of the bar when over it so I can position the tooltip

How can I get the width and x pos when over the bar.

Is this a problem with 'this' in Angular

d3.selectAll('.bar-opacity').on("mouseover", (d:any) => {



    const xPos = d3.select(this).attr('x');

    const rectWidth = d3.select(this).attr('width');



    console.log(xPos)



    let html = ''

      html += '<div class="">'+d.color+'</div>'

      html += '<div class="tooltip-block">'+d.day+'</div>'



    d3.select('.chart-tooltip')

      .style("left", d3.event.pageX + 5 + "px")

      .style("top", d3.event.pageY - 25 + "px")

      .html(html)



    d3.select('.chart-tooltip').style("display", null)

    })



    .on("mouseout", ()=>{

    d3.select('.chart-tooltip').style("display", "none")

      .transition()

      .duration(500)

    })

asked Nov 20 '18 at 12:31

ttmt

2,0671149101

I have a Stackblitz here - https://stackblitz.com/edit/ng-graph-tooltip?file=src%2Fapp%2Fapp.component.html

I have a mouseover event when hovering over the bars

I trying to get the width and x pos of the bar when over it so I can position the tooltip

How can I get the width and x pos when over the bar.

Is this a problem with 'this' in Angular

d3.selectAll('.bar-opacity').on("mouseover", (d:any) => {



    const xPos = d3.select(this).attr('x');

    const rectWidth = d3.select(this).attr('width');



    console.log(xPos)



    let html = ''

      html += '<div class="">'+d.color+'</div>'

      html += '<div class="tooltip-block">'+d.day+'</div>'



    d3.select('.chart-tooltip')

      .style("left", d3.event.pageX + 5 + "px")

      .style("top", d3.event.pageY - 25 + "px")

      .html(html)



    d3.select('.chart-tooltip').style("display", null)

    })



    .on("mouseout", ()=>{

    d3.select('.chart-tooltip').style("display", "none")

      .transition()

      .duration(500)

    })

javascript angular d3.js

asked Nov 20 '18 at 12:31

ttmt

2,0671149101

asked Nov 20 '18 at 12:31

ttmt

2,0671149101

asked Nov 20 '18 at 12:31

ttmt

2,0671149101

asked Nov 20 '18 at 12:31

ttmt

2,0671149101

asked Nov 20 '18 at 12:31

ttmt

2,0671149101

First thing I noticed - Do not use arrow function in D3 event handlers. Try using it as a normal function to use this.

– CRayen
Nov 20 '18 at 12:48

This works here but in my actual code I'm using variables outside this function like this.margin.top in this example this doesn't work when the function is like that - stackblitz.com/edit/…

– ttmt
Nov 20 '18 at 13:13

What is the problem? Using a normal function like you did in the stackblitz allows you to successfully get the width and pos...

– Zim
Nov 20 '18 at 13:23

Using a normal function I cant access things like this.margin.top. I'll post a separate question

– ttmt
Nov 20 '18 at 13:27

As explained here: stackoverflow.com/questions/53204937/… you can use an arrow function with the third argument of the callback (datum,index,elements) => { const coords = d3.mouse(elements[index]); };

– David Lemon
Nov 20 '18 at 14:03

add a comment |

First thing I noticed - Do not use arrow function in D3 event handlers. Try using it as a normal function to use this.

– CRayen
Nov 20 '18 at 12:48

This works here but in my actual code I'm using variables outside this function like this.margin.top in this example this doesn't work when the function is like that - stackblitz.com/edit/…

– ttmt
Nov 20 '18 at 13:13

What is the problem? Using a normal function like you did in the stackblitz allows you to successfully get the width and pos...

– Zim
Nov 20 '18 at 13:23

Using a normal function I cant access things like this.margin.top. I'll post a separate question

– ttmt
Nov 20 '18 at 13:27

As explained here: stackoverflow.com/questions/53204937/… you can use an arrow function with the third argument of the callback (datum,index,elements) => { const coords = d3.mouse(elements[index]); };

– David Lemon
Nov 20 '18 at 14:03

First thing I noticed - Do not use arrow function in D3 event handlers. Try using it as a normal function to use this.

– CRayen
Nov 20 '18 at 12:48

This works here but in my actual code I'm using variables outside this function like this.margin.top in this example this doesn't work when the function is like that - stackblitz.com/edit/…

– ttmt
Nov 20 '18 at 13:13

What is the problem? Using a normal function like you did in the stackblitz allows you to successfully get the width and pos...

– Zim
Nov 20 '18 at 13:23

Using a normal function I cant access things like this.margin.top. I'll post a separate question

– ttmt
Nov 20 '18 at 13:27

As explained here: stackoverflow.com/questions/53204937/… you can use an arrow function with the third argument of the callback (datum,index,elements) => { const coords = d3.mouse(elements[index]); };

– David Lemon
Nov 20 '18 at 14:03

add a comment |

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