Labels not working correctly

• July 12, 2018 at 8:44 pm #21792
  
  Samuel

  Hi

  I’m trying to create a gender comparison chart. After som help from the CanvasJS team I got it to look almost like I want it but the labels are incorrect.

  Heres the code

  var dataSet = [{ x: 10, y: 71, position: "upperValue", label: "13-17" },
                 { x: 20, y: 55, position: "upperValue", label: "18-24" },
                 { x: 30, y: 55, position: "upperValue", label: "24-34" },
                 { x: 40, y: 65, position: "upperValue", label: "35-44" },
                 { x: 50, y: 95, position: "upperValue", label: "45-54" },
                 { x: 10, y: 51, position: "lowerValue", label: "13-17" },
                 { x: 20, y: 95, position: "lowerValue", label: "18-24" },
                 { x: 30, y: 20, position: "lowerValue", label: "25-34" },
                 { x: 40, y: 85, position: "lowerValue", label: "35-44" },
                 { x: 50, y: 15, position: "lowerValue", label: "45-54" }];
  
     var chartGender = new CanvasJS.Chart("chartGender",{
       axisY: {
         labelFormatter: function(e) {
           if (e.value < 0)
             return label = -1 * e.value;
           else
             return label =  e.value;
         }
       },
       toolTip:{
         contentFormatter: function ( e ) {
           if( e.entries[0].dataPoint.y < 0)
             return e.entries[0].dataPoint.x + ": " + -1 * e.entries[0].dataPoint.y ;
           else
             return e.entries[0].dataPoint.x + ": " + e.entries[0].dataPoint.y ;
         }},
       data: [
         {
           type: "column",
           dataPoints: [ ]
         }
       ]
     });
  
     for( var i = 0; i < dataSet.length; i++ )
       if( dataSet[i].position === "lowerValue")
         chartGender.options.data[0].dataPoints.push({ x:dataSet[i].x, y: (-1 * dataSet[i].y), color: "#3C6399"});
       else
         chartGender.options.data[0].dataPoints.push({ x:dataSet[i].x, y: (dataSet[i].y), color: "#899BC0" });
  
    chartGender.render();

  This will end up with labels like 10,20,30,40,50 and not the labels I’d like to have: 13-17, 18-24, 25-34 etc.

  July 13, 2018 at 5:22 pm #21804
  
  Priyanka M S

  Samuel,

  While adding the dataPoints to chart, you need to add labels along with x and y values. Also setting axisX interval according to the dataPoints should work fine in your scenario. Please take a look at this jsfiddle.

  __
  Priyanka M S
  Team CanvasJS

  July 13, 2018 at 5:37 pm #21808
  
  Samuel

  Looks great! Thx.

  How do I add “Women” as dark blue (name of dark blue dataset) and “Men” as the lighter blue with this setup?

  July 13, 2018 at 6:22 pm #21814
  
  Priyanka M S

  Samuel,

  You can use indexLabel for the same. Please take a look at this jsfiddle.

  __
  Priyanka M S
  Team CanvasJS

  July 13, 2018 at 6:28 pm #21816
  
  Samuel

  Hi

  Thx but that was not what I meant.

  I don’t want a label on each bar. I want 1 label in total per color, below the chart. Like this one: https://canvasjs.com/javascript-charts/multi-series-chart/

  The labels “Myrtle Beach” “Martha Vineyard” etc.

  July 16, 2018 at 2:57 pm #21840
  
  Vulpe

  @Samuel
  Hey,

  You can use the legend to do what you are asking.
  Look at https://canvasjs.com/docs/charts/chart-options/legend/ for more info about it.
  Hopefully this helps.

  July 16, 2018 at 5:15 pm #21845
  
  Priyanka M S

  Samuel,

  Legends are used to represent dataSeries in a chart. You can’t have two legends for one dataSeries. With a workaround, you can display span elements as inactive legends. Please take a look at this updated jsfiddle.

  __
  Priyanka M S
  Team CanvasJS

  July 26, 2018 at 5:59 pm #21992
  
  Samuel

  I still have some problems adding more values to the chart. It will only show 5 but I have 7.

  var dataSet = [{ x: 10, y: 71, position: "upperValue", label: "13-17" },
                 { x: 20, y: 55, position: "upperValue", label: "18-24" },
                 { x: 30, y: 55, position: "upperValue", label: "25-34" },
                 { x: 40, y: 65, position: "upperValue", label: "35-44" },
                 { x: 50, y: 95, position: "upperValue", label: "45-54" },
                 { x: 50, y: 95, position: "upperValue", label: "55-64" },
                 { x: 40, y: 65, position: "upperValue", label: "65" },
                 { x: 10, y: 51, position: "lowerValue", label: "13-17" },
                 { x: 20, y: 95, position: "lowerValue", label: "18-24" },
                 { x: 30, y: 20, position: "lowerValue", label: "25-34" },
                 { x: 40, y: 85, position: "lowerValue", label: "35-44" },
                 { x: 40, y: 85, position: "lowerValue", label: "45-54" },
                 { x: 40, y: 85, position: "lowerValue", label: "55-64" },
                 { x: 50, y: 15, position: "lowerValue", label: "65" }];
  
  var chartGender = new CanvasJS.Chart("chartGender",{
    animationEnabled: true,
    theme: "light2",
    axisX: {
      interval: 10,
    },
    axisY: {
      labelFormatter: function(e) {
        if (e.value < 0)
          return label = -1 * e.value;
        else
          return label =  e.value;
      }
    },
    toolTip:{
      contentFormatter: function ( e ) {
        if( e.entries[0].dataPoint.y < 0)
          return e.entries[0].dataPoint.x + ": " + -1 * e.entries[0].dataPoint.y ;
        else
          return e.entries[0].dataPoint.x + ": " + e.entries[0].dataPoint.y ;
      }},
    data: [
      {
        type: "column",
        dataPoints: [ ]
      }
    ]
  });
  
  for( var i = 0; i < dataSet.length; i++ )
    if( dataSet[i].position === "lowerValue")
      chartGender.options.data[0].dataPoints.push({ x:dataSet[i].x, y: (-1 * dataSet[i].y), label: dataSet[i].label, color: "#229DA0"});
    else
      chartGender.options.data[0].dataPoints.push({ x:dataSet[i].x, y: (dataSet[i].y), label: dataSet[i].label, color: "#27B6BA" });
  
    chartGender.render();
  

  The chart must be able to show more than 5 age groups.

  July 27, 2018 at 12:11 pm #22003
  
  Priyanka M S

  Samuel,

  The fiddle which we had provided before works for any number of dataPoints, provided that the x values of “upperValue” sync with the x values of “lowerValue”. Please take a look at this jsfiddle.

  __
  Priyanka M S
  Team CanvasJS