d suitability scores</em> and <em>standardized class intervals</em>. For purpose of brevity and distinction, the <em>unstandardized suitability class intervals</em> are now referred to as the <em>parameter class intervals</em> or <em>parameter intervals</em>, since the former is specified across parameters of any crop requirement.</p>
<p>The idea of membership function is to standardize the parameter class intervals into a <em>standardized suitability class</em>. For purpose of brevity, the latter is now si