[Thangaraj Raman]

@haykay470,

Can you kindly create a JSFiddle, reproducing the issue you are facing & share it with us so that we can look into the code / chart-options being used, understand the scenario better and help you out?

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@arseneksa97,

You can use subtitles to show a watermark in the plot area of the chart as shown in the code snippet below:

subtitles: [{
    text: "Built using CanvasJS",
    fontSize: 40,
    verticalAlign: "center",
    dockInsidePlotArea: true,
    fontColor: "rgba(0,0,0,0.1)"
}],

Please check this JSFiddle for a working example.

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@bkshn,

You can add 2 dummy datapoints in the hidden region of the doughnut chart and use their indexlabels to show the minimum and maximum value of the gauge as shown in the code snippet below:

var data = {
    type: "doughnut",
    indexLabelPlacement: "inside",
    innerRadius: "60%",
    dataPoints: [
      {
        y: 1,
        indexLabel: gauge.maximum + "",
        color: "transparent"
      },
      {
        y: gauge.maximum - 2,
        color: "transparent",
        toolTipContent: null
      },
      {
        y: 1,
        indexLabel: "0",
        color: "transparent"
      },
      gauge.data,
      gauge.unoccupied,
   ],
};

Please check this JSFiddle for a working example.

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@bkshn,

A doughnut chart does not have axes. If you want to highlight the minimum and maximum values from the datapoint array, you can use subtitles to achieve the same.

If this doesn’t meet your requirement, kindly share a pictorial representation and brief us further about your requirement so that we can understand your scenario better and help you out with an appropriate solution.

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@lesliedewhurst01,

We have tested the sample locally and it seems to be working fine on our end. It looks like you might have copied just the template(index.html) & missed out on replacing the view(views.py).

Please take a look at this sample project for a working example. Replacing the trial version of the CanvasJS file (canvasjs.min.js) with the commercial version also seems to be working fine.

If you are still facing issues, kindly help us with more information like errors in the console, the browser in which the problem occurs or steps to reproduce the issue, etc.

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@chrisstone,

We don’t have a gauge chart as of now but a semi-doughnut chart can be used to achieve the same. Please follow the steps below for creating a gauge chart using a doughnut chart.

First, we need to create an object that will store all the necessary data that is needed to be shown on the gauge chart. The code snippet below shows an example of that object:

var gauge = {
  title:{text: "Gauge Chart"},
  data: { y: 7 }, //gauge value 
  maximum: 10
};

In the second step, we will initialize the chart object and populate its dataPoints considering the fact that only half of the doughnut chart is displayed. Please refer to the code snippet below for achieving the same:

var chart = new CanvasJS.Chart("chartContainer");
createGauge(chart);

//Function for gauge
function createGauge(chart){
  //Caluculation of remaining parameters to render gauge with the help of doughnut
  gauge.unoccupied = {
    y: gauge.maximum - gauge.data.y, 
    color: "#DEDEDE", 
    toolTipContent: null, 
    highlightEnabled: false,
    click : function (){ gauge.unoccupied.exploded = true; }
  }
  gauge.data.click = function (){ gauge.data.exploded = true; };
  if(!gauge.data.color)
    gauge.data.color = "#69C434";
  gauge.valueText = {text: gauge.data.y.toString(), verticalAlign :"center"};

  var data = {
    type: "doughnut",
    dataPoints: [
      {
        y: gauge.maximum,
        color: "transparent",
        toolTipContent: null
      },
      gauge.data,
      gauge.unoccupied
    ],
  };

  if(!chart.options.data)
    chart.options.data = [];
  chart.options.data.push(data);

  if(gauge.title){
    chart.options.title = gauge.title;
  }

  //For showing value
  if(!chart.options.subtitles)
    chart.options.subtitles = [];
  chart.options.subtitles.push(gauge.valueText);

  chart.render();
}

Please take a look at this JSFiddle for a working example with sample code.

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@mnair,

You can achieve your requirement by zooming into a particular region of the chart. To enable zooming in the chart, you will have to set zoomEnabled to true.

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@kinokatsu,

You can show an arrow over the last datapoint, by drawing out an arrow over the chart canvas with id .canvasjs-chart-canvas.

Please check this JSFiddle for a working example.

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@ezsolve,

You can use Unicode characters or emojis to render custom icons as index labels. Please check the code snippet below:

indexLabel: "\u263A",  //Unicode smiling face

OR

indexLabel: "😊",  //smiling face emoji

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@ispybadguys,

The datapoint object only accepts x and y values as of now. Your JSON can be in this format – {“x”:1687209355000,”y1″:10,”y2″:40}, however, you will have to parse the JSON data in the format accepted by CanvasJS and then pass them as datapoints to the chart. Please check the code snippet below:

for(var i = 0; i < jsonData.length; i++) {
    chart.options.data[0].dataPoints.push({x: jsonData[i].x, y: jsonData[i].y1})
    chart.options.data[1].dataPoints.push({x: jsonData[i].x, y: jsonData[i].y2})
}

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@ispybadguys,

You can remove a datapoint from the chart by using the array shift() method as shown in the code snippet below:

chart.options.data[0].dataPoints.shift();
chart.render();

Please check this JSFiddle for a working example.

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@mnair,

Adding a border to the columns is not possible as of now. However, you can use an error chart in combination with a column chart and set whiskerThickness to 0 and stemThickness to a value slightly greater than the dataPointWidth to create a border around the columns.

Please check this JSFiddle for a working example.

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@xliff,

You can change the color of a slice in the pie chart after it is rendered by updating the color of the corresponding datapoint in the chart options as shown in the code snippet below:

chart.options.data[0].dataPoints[3].color = "red";
chart.render();

Please take a look at this documentation page for step-by-step tutorial on updating chart options.

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@mustadirmahmood,

It is not possible to fix the x-axis to the top of the stockchart while scrolling through other charts in a stockchart as of now. However, you can position an overlayed canvas on top of the first chart and copy the x-axis to the overlayed canvas to achieve your requirement.

Please check this updated JSFiddle for a working example.

—
Thangaraj Raman
Team CanvasJS

[Thangaraj Raman]

@appsoft,

It is not possible to show the same chart in multiple places. However, you can create 2 different charts and pass the same set of chart options to them to achieve your requirement. Please take a look at this documentation page for a step-by-step tutorial on rendering multiple charts in a page.

Please check this JSFiddle for a working example.

—
Thangaraj Raman
Team CanvasJS