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<!DOCTYPE MAN SYSTEM "../../manrev.dtd">
<MAN>
	<LANGUAGE>eng</LANGUAGE>
	<TITLE>perctl</TITLE>
	<TYPE>Scilab Function</TYPE>
	<DATE>April 1999</DATE>
	<SHORT_DESCRIPTION name="perctl"> computation of percentils</SHORT_DESCRIPTION>
	
	<CALLING_SEQUENCE>
		<CALLING_SEQUENCE_ITEM>p=perctl(x,y) </CALLING_SEQUENCE_ITEM>
	</CALLING_SEQUENCE>
	<PARAM>
		<PARAM_INDENT>
			<PARAM_ITEM>
				<PARAM_NAME>x</PARAM_NAME>
				<PARAM_DESCRIPTION>
					<SP>: real or complex vector or matrix</SP>
				</PARAM_DESCRIPTION>
			</PARAM_ITEM>
			<PARAM_ITEM>
				<PARAM_NAME>y</PARAM_NAME>
				<PARAM_DESCRIPTION>
					<SP>: vector of positif values between 0 and 100.</SP>
				</PARAM_DESCRIPTION>
			</PARAM_ITEM>
		</PARAM_INDENT>
	</PARAM>
	<DESCRIPTION>
		<P>
			Compute the matrix p of percentils (in increasing
			order,  column  first) of  the  real  vector or  matrix
			x indicated by the entries of y, the values
			of entries of y must be positive integers between
			0  and  100.   p   is  a  matrix  whose  type  is
			length(y) x 2 and the content of its first column
			are the percentils values.   The contents of its second
			column are  the places  of the computed  percentiles in
			the input matrix x.
		</P>
		<P>
			The minimum or maximum values in x are assigned to
			percentiles for percent values outside that range.
		</P>
	</DESCRIPTION>
  <EXAMPLE>
<![CDATA[
x=[6 7 0 7 10 4 2 2 7 1;
	6 0 5 5 5 2 0 6 8 10;
	8 6 4 3 5 9 8 3 4 7;
	1 3 2 7 6 1 1 4 8 2;
	6 3 5 1 6 5 9 9 5 5;
	1 6 4 4 5 4 0 8 1 8;
	7 1 3 7 8 0 2 8 10 8;
	3 6 1 9 8 5 5 3 2 1;
	5 7 6 2 10 8 7 4 0 8;
	10 3 3 4 8 6 9 4 8 3]
y=[10 20 30]
p=perctl(x,y)
 ]]>
  </EXAMPLE>
	<AUTHOR> Carlos Klimann</AUTHOR>
	<BIBLIO>
		<P>
			HYNDMAN,Rob  J.   and FAN  Yanan,  Sample Quantiles  in
			Statistical   Packages,   The  American   Statistician,
			Nov.1996, Vol 50, No.4
		</P>
	</BIBLIO>
</MAN>
