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<!-- # John Wiley & Sons, Inc. # -->

<!-- # # -->

<!-- # Book: Algorithms in Bioinformatics: Theory and Implementation # -->

<!-- # Author: Dr. Paul A. Gagniuc # -->

<!-- # # -->

<!-- # Institution: # -->

<!-- # University Politehnica of Bucharest # -->

<!-- # Faculty of Engineering in Foreign Languages # -->

<!-- # Department of Engineering in Foreign Languages # -->

<!-- # # -->

<!-- # Area: European Union # -->

<!-- # Date: 04/01/2021 # -->

<!-- # # -->

<!-- # Cite this work as: # -->

<!-- # Paul A. Gagniuc. Algorithms in Bioinformatics: Theory and Implementation. John Wiley & Sons, 2021, ISBN: 9781119697961. # -->

<!-- # # -->

<!-- ############################################################################################################################## -->

<script>

// A frequency scanner with a threshold filter

var s = 'CATTAACGGAGCGCGCGCGGTCTCTCT';

var w = 9;

var d = 'CG';

var t = '';

var n = '';

var b = GF(s,d);

document.write('Global CpG% = ' + b);

for (var u=0; u<=s.length-w; u++)

{

n = s.substr(u,w);

x = GF(n,d);

if(x < b){x='-';}

t += x + ',';

}

document.write('<hr>Signal:<br>' + t);

function GF(s, m)

{

var p = 0;

s = s.toLowerCase();

m = m.toLowerCase();

p = s.split(m).join('').length;

p = (s.length - p)/s.length;

return (p * 100).toFixed(0);

}

</script>