Simple Bar Graph for Easy Comparison

Bar graphs are visual tools used to represent data using rectangular bars of varying heights or lengths. The length of each bar is proportional to the value it represents, making it easy to compare different categories or groups. They are ideal for showcasing discrete data and making comparisons between categories readily apparent. Variations include vertical and horizontal bar graphs, clustered bar graphs for showing multiple data sets, and stacked bar graphs for showing components of a whole. Creating effective bar graphs involves selecting appropriate scales, labeling axes clearly, and using color or patterns to improve understanding. They are frequently used across various fields, from business reports to scientific presentations.

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HTML / JS
R Code

<html>

  <head>
    <!-- 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/dist/canvasXpress.min.js"></script>
  </head>

  <body>

    <!-- 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" : [
              [4,5,4,4,7]
            ],
            "smps" : ["Cat 1","Cat 2","Cat 3","Cat 4","Cat 5"],
            "vars" : ["Var 1"]
         }
      }

      // Create the configuration for the graph
      var config = {
        "graphOrientation": "vertical",
        "graphType": "Bar",
        "showLegend": false,
        "smpTextRotate": 90,
        "smpTitle": "Categories",
        "title": "Bar graph with a single series",
        "xAxis": ["Value"],
        "xAxisTitle": "Value"
      }

      // Event used to create graph (optional)
      var events = false


      // Call the CanvasXpress function to create the graph
      var cX = new CanvasXpress("canvasId", data, config, events);

      
    </script>

  </body>

</html>

library(canvasXpress)
y=read.table("https://www.canvasxpress.org/data/r/cX-stBarOneSeries-dat.txt", header=TRUE, sep="\t", quote="", row.names=1, fill=TRUE, check.names=FALSE, stringsAsFactors=FALSE)
canvasXpress(
  data=y,
  graphOrientation="vertical",
  graphType="Bar",
  showLegend=FALSE,
  smpTextRotate=90,
  smpTitle="Categories",
  title="Bar graph with a single series",
  xAxis=list("Value"),
  xAxisTitle="Value"
)