SPC Control Charts in JavaScript

How to make a D3.js-based SPC Control Charts in javascript.

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Plotly is a free and open-source graphing library for JavaScript. We recommend you read our Getting Started guide for the latest installation or upgrade instructions, then move on to our Plotly Fundamentals tutorials or dive straight in to some Basic Charts tutorials.

Basic SPC Control Chart

var Data = {
  type: 'scatter',
  x: [1,2,3,4,5,6,7,8,9],
  y: [4,2,-1,4,-5,-7,0,3,8],
  mode: 'lines+markers',
  name: 'Data',
  showlegend: true,
  hoverinfo: 'all',
  line: {
    color: 'blue',
    width: 2
  },
  marker: {
    color: 'blue',
    size: 8,
    symbol: 'circle'
  }
}

var Viol = {
  type: 'scatter',
  x: [6,9],
  y: [-7,8],
  mode: 'markers',
  name: 'Violation',
  showlegend: true,
  marker: {
    color: 'rgb(255,65,54)',
    line: {width: 3},
    opacity: 0.5,
    size: 12,
    symbol: 'circle-open'
  }
}

var CL = {
  type: 'scatter',
  x: [0.5, 10, null, 0.5, 10],
  y: [-5, -5, null, 5, 5],
  mode: 'lines',
  name: 'LCL/UCL',
  showlegend: true,
  line: {
    color: 'red',
    width: 2,
    dash: 'dash'
  }
}

var Centre = {
  type: 'scatter',
  x: [0.5, 10],
  y: [0, 0],
  mode: 'lines',
  name: 'Centre',
  showlegend: true,
  line: {
    color: 'grey',
    width: 2
  }
}

var data = [Data,Viol,CL,Centre]

var layout = {
  title: {
    text: 'Basic SPC Chart'
  },
  xaxis: {
    zeroline: false
  },
  yaxis: {
    range: [-10,10],
    zeroline: false
  }
}

Plotly.newPlot('myDiv', data,layout);

SPC Control Chart & Distribution

var Data = {
  type: 'scatter',
  x: [1,2,3,4,5,6,7,8,9],
  y: [4,2,-1,4,-5,-7,0,3,8],
  mode: 'lines+markers',
  name: 'Data',
  showlegend: true,
  hoverinfo: 'all',
  line: {
    color: 'blue',
    width: 2
  },
  marker: {
    color: 'blue',
    size: 8,
    symbol: 'circle'
  }
}

var Viol = {
  type: 'scatter',
  x: [6,9],
  y: [-7,8],
  mode: 'markers',
  name: 'Violation',
  showlegend: true,
  marker: {
    color: 'rgb(255,65,54)',
    line: {width: 3},
    opacity: 0.5,
    size: 12,
    symbol: 'circle-open'
  }
}

var CL = {
  type: 'scatter',
  x: [0.5, 10, null, 0.5, 10],
  y: [-5, -5, null, 5, 5],
  mode: 'lines',
  name: 'LCL/UCL',
  showlegend: true,
  line: {
    color: 'red',
    width: 2,
    dash: 'dash'
  }
}

var Centre = {
  type: 'scatter',
  x: [0.5, 10],
  y: [0, 0],
  mode: 'lines',
  name: 'Centre',
  showlegend: true,
  line: {
    color: 'grey',
    width: 2
  }
}

var histo = {
  type: 'histogram',
  x: [1,2,3,4,5,6,7,8,9],
  y: [4,2,-1,4,-5,-7,0,3,8],
  name: 'Distribution',
  orientation: 'h',
  marker: {
    color: 'blue',
    line: {
      color: 'white',
      width: 1
    }
  },
  xaxis: 'x2',
  yaxis: 'y2'
}

var data = [Data,Viol,CL,Centre,histo]

// layout
var layout = {
  title: {
    text: 'Basic SPC Chart'
  },
  xaxis: {
    domain: [0, 0.7], // 0 to 70% of width
    zeroline: false
  },
  yaxis: {
    range: [-10,10],
    zeroline: false
  },
  xaxis2: {
    domain: [0.8, 1] // 70 to 100% of width
  },
  yaxis2: {
    anchor: 'x2',
    showticklabels: false
  }
}

Plotly.newPlot('myDiv', data,layout);