XML/SVG/pattern

Generating a Checkerboard Grid

<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20001102//EN"
 "http://www.w3.org/TR/2000/CR-SVG-20001102/DTD/svg-20001102.dtd">
<svg width="800" height="500">
  <defs>
    <pattern id="checkerPattern" width="80" height="80"
      patternUnits="userSpaceOnUse">
      <rect fill="red" x="0" y="0" width="40" height="40" />
      <rect fill="blue" x="40" y="0" width="40" height="40" />

    </pattern>
  </defs>
  <g transform="translate(50,50)">
    <rect fill="url(#checkerPattern)" style="stroke:white" x="0"
      y="0" width="400" height="400" />
  </g>
</svg>

Generating a Gradient Checkerboard

<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20001102//EN"
 "http://www.w3.org/TR/2000/CR-SVG-20001102/DTD/svg-20001102.dtd">
<svg width="800" height="400">
  <defs>
  <linearGradient id="gradientDefinition"
     x1="0" y1="0" x2="40" y2="40"
     gradientUnits="userSpaceOnUse">
     <stop offset="0%"   style="stop-color:#FF0000"/>
     <stop offset="100%" style="stop-color:#000000"/>
  </linearGradient>
  <pattern id="checkerPattern"
           width="40" height="40"
           patternUnits="userSpaceOnUse">
     <rect fill="url(#gradientDefinition)"
           stroke="yellow" stroke-dasharray="4 4 4 4"
           x="0" y="0" width="40" height="40"/>
  </pattern>
  </defs>
  <rect
     fill="url(#checkerPattern)"
     style="stroke:red"
     x="0" y="0" width="800" height="400"/>
</svg>

Using an SVG pattern Element

<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20001102//EN"
 "http://www.w3.org/TR/2000/CR-SVG-20001102/DTD/svg-20001102.dtd">
<svg width="100%" height="100%">
  <defs>
    <pattern id="gridPattern" width="40" height="40"
      patternUnits="userSpaceOnUse">
      <rect x="0" y="0" width="40" height="40" fill="#CCCCCC"
        style="stroke:white;stroke-width:3;" />
    </pattern>
  </defs>
  <g transform="translate(20,20)">
    <rect fill="url(#gridPattern)" stroke="red" stroke-width="4"
      stroke-dasharray="2 2 2 2" x="0" y="0" width="400" height="280" />
  </g>
</svg>