Create ticks at certain time positions on a chartjs cartesian time axis












1















I created a realtime chart that updates about every 10 seconds by adding a new value and removing an old one.



Image of the realtime chart



I'm a bit unhappy about the chosen ticks of the time axis. Every 10 Minutes is fine, but I'd prefer values like 15:50,16:00,16:10. I looked around the documentation time axis but did not find anything promising.
My definition of my xAxes looks like:



    xAxes: [
{
gridLines: {
display: true
},
type: "time",
time: {
unit: "minute",
unitStepSize: 10,
displayFormats: {
minute: "HH:mm"
}
},
ticks: {
min: 0,
max: this.datapoints.length,
autoSkip: true,
maxTicksLimit: 10
}
}
]


I tried to loop over the dataset and find the 'first pretty time' object and set this object as my ticks.min object. But this did not work.










share|improve this question



























    1















    I created a realtime chart that updates about every 10 seconds by adding a new value and removing an old one.



    Image of the realtime chart



    I'm a bit unhappy about the chosen ticks of the time axis. Every 10 Minutes is fine, but I'd prefer values like 15:50,16:00,16:10. I looked around the documentation time axis but did not find anything promising.
    My definition of my xAxes looks like:



        xAxes: [
    {
    gridLines: {
    display: true
    },
    type: "time",
    time: {
    unit: "minute",
    unitStepSize: 10,
    displayFormats: {
    minute: "HH:mm"
    }
    },
    ticks: {
    min: 0,
    max: this.datapoints.length,
    autoSkip: true,
    maxTicksLimit: 10
    }
    }
    ]


    I tried to loop over the dataset and find the 'first pretty time' object and set this object as my ticks.min object. But this did not work.










    share|improve this question

























      1












      1








      1








      I created a realtime chart that updates about every 10 seconds by adding a new value and removing an old one.



      Image of the realtime chart



      I'm a bit unhappy about the chosen ticks of the time axis. Every 10 Minutes is fine, but I'd prefer values like 15:50,16:00,16:10. I looked around the documentation time axis but did not find anything promising.
      My definition of my xAxes looks like:



          xAxes: [
      {
      gridLines: {
      display: true
      },
      type: "time",
      time: {
      unit: "minute",
      unitStepSize: 10,
      displayFormats: {
      minute: "HH:mm"
      }
      },
      ticks: {
      min: 0,
      max: this.datapoints.length,
      autoSkip: true,
      maxTicksLimit: 10
      }
      }
      ]


      I tried to loop over the dataset and find the 'first pretty time' object and set this object as my ticks.min object. But this did not work.










      share|improve this question














      I created a realtime chart that updates about every 10 seconds by adding a new value and removing an old one.



      Image of the realtime chart



      I'm a bit unhappy about the chosen ticks of the time axis. Every 10 Minutes is fine, but I'd prefer values like 15:50,16:00,16:10. I looked around the documentation time axis but did not find anything promising.
      My definition of my xAxes looks like:



          xAxes: [
      {
      gridLines: {
      display: true
      },
      type: "time",
      time: {
      unit: "minute",
      unitStepSize: 10,
      displayFormats: {
      minute: "HH:mm"
      }
      },
      ticks: {
      min: 0,
      max: this.datapoints.length,
      autoSkip: true,
      maxTicksLimit: 10
      }
      }
      ]


      I tried to loop over the dataset and find the 'first pretty time' object and set this object as my ticks.min object. But this did not work.







      javascript chart.js vue-chartjs






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      asked Nov 21 '18 at 16:08









      ChristianMurschallChristianMurschall

      1,064417




      1,064417
























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          OK I found it. The property is in the time attribute:



          time: {
          unit: "minute",
          unitStepSize: 10,
          displayFormats: {
          minute: "HH:mm"
          },
          min: firstprettyTime, // <- moment js object
          },


          All praise to this guy's answer.






          share|improve this answer























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            1 Answer
            1






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            active

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            active

            oldest

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            0














            OK I found it. The property is in the time attribute:



            time: {
            unit: "minute",
            unitStepSize: 10,
            displayFormats: {
            minute: "HH:mm"
            },
            min: firstprettyTime, // <- moment js object
            },


            All praise to this guy's answer.






            share|improve this answer




























              0














              OK I found it. The property is in the time attribute:



              time: {
              unit: "minute",
              unitStepSize: 10,
              displayFormats: {
              minute: "HH:mm"
              },
              min: firstprettyTime, // <- moment js object
              },


              All praise to this guy's answer.






              share|improve this answer


























                0












                0








                0







                OK I found it. The property is in the time attribute:



                time: {
                unit: "minute",
                unitStepSize: 10,
                displayFormats: {
                minute: "HH:mm"
                },
                min: firstprettyTime, // <- moment js object
                },


                All praise to this guy's answer.






                share|improve this answer













                OK I found it. The property is in the time attribute:



                time: {
                unit: "minute",
                unitStepSize: 10,
                displayFormats: {
                minute: "HH:mm"
                },
                min: firstprettyTime, // <- moment js object
                },


                All praise to this guy's answer.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 21 '18 at 16:24









                ChristianMurschallChristianMurschall

                1,064417




                1,064417
































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