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






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 21 '18 at 16:08









      ChristianMurschallChristianMurschall

      1,064417




      1,064417
























          1 Answer
          1






          active

          oldest

          votes


















          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























            Your Answer






            StackExchange.ifUsing("editor", function () {
            StackExchange.using("externalEditor", function () {
            StackExchange.using("snippets", function () {
            StackExchange.snippets.init();
            });
            });
            }, "code-snippets");

            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "1"
            };
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function() {
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled) {
            StackExchange.using("snippets", function() {
            createEditor();
            });
            }
            else {
            createEditor();
            }
            });

            function createEditor() {
            StackExchange.prepareEditor({
            heartbeatType: 'answer',
            autoActivateHeartbeat: false,
            convertImagesToLinks: true,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: 10,
            bindNavPrevention: true,
            postfix: "",
            imageUploader: {
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            },
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            });


            }
            });














            draft saved

            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53416118%2fcreate-ticks-at-certain-time-positions-on-a-chartjs-cartesian-time-axis%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            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
































                    draft saved

                    draft discarded




















































                    Thanks for contributing an answer to Stack Overflow!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53416118%2fcreate-ticks-at-certain-time-positions-on-a-chartjs-cartesian-time-axis%23new-answer', 'question_page');
                    }
                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    'app-layout' is not a known element: how to share Component with different Modules

                    android studio warns about leanback feature tag usage required on manifest while using Unity exported app?

                    WPF add header to Image with URL pettitions [duplicate]