Contour Chart

Contour plots are graphs to show a three-dimensional surface on a two-dimensional plane. It graphs the X, Y variables on the plane axis and a response variable Z as contours. The format of the data can be specified as a three column x, y, z (long and skiny) data set or as rows and columns (short and fat) specifying the z value.


Example Color Themes

Example Fonts

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Show Code

Tools

<!-- Include the CanvasXpress library in your HTML file -->
<link rel="stylesheet" href="https://www.canvasxpress.org/dist/canvasXpress.css" type="text/css"/>
<script src="https://www.canvasxpress.org/canvasXpress.min.js"></script>


<!-- Create a canvas element for the chart with the desired dimensions -->
<div>
  <canvas id="canvasId" width="600" height="600"</canvas>
</div>


<!-- Create a script to initialize the chart -->
<script>

  <!-- Create the data for the graph -->
  var data = {
     "y" : {
        "data" : [
          [20,15.625,12.5,10.625,10],
          [15.625,11.25,8.125,6.25,5.625],
          [12.5,8.125,5,3.125,2.5],
          [10.625,6.25,3.125,1.25,0.625],
          [10,5.625,2.5,0.625,0]
        ],
        "smps" : ["s1","s2","s3","s4","s5"],
        "vars" : ["v1","v2","v3","v4","v5"]
     }
  }
  
  
  <-- Create the configuration for the graph -->
  var config = {
     "contourType":"normal",
     "graphType":"Heatmap",
     "heatmapCellBox":"false",
     "showSampleNames":"false",
     "showVariableNames":"false",
     "title":"Basic Contour Plot"
  }
  

  <!-- Call the CanvasXpress function to create the graph -->
  var cX = new CanvasXpress("canvasId", data, config);


  
  <-- Functions after rendering graph -->
  cX.createContour();
  
</script>

library(canvasXpress)
y=read.table("https://www.canvasxpress.org/data/cX-contour-dat.txt", header=TRUE, sep="\t", quote="", row.names=1, fill=TRUE, check.names=FALSE, stringsAsFactors=FALSE)
canvasXpress(
  data=y,
  contourType="normal",
  graphType="Heatmap",
  heatmapCellBox=FALSE,
  showSampleNames=FALSE,
  showVariableNames=FALSE,
  title="Basic Contour Plot",
  afterRender=list(list("createContour"))
)
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