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<?xml version="1.0" encoding="UTF-8"?>
<!--
*
* This help file was generated from slewrate.sci using help_from_sci().
*
-->
<refentry version="5.0-subset Scilab" xml:id="slewrate" xml:lang="en"
xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns:ns3="http://www.w3.org/1999/xhtml"
xmlns:mml="http://www.w3.org/1998/Math/MathML"
xmlns:scilab="http://www.scilab.org"
xmlns:db="http://docbook.org/ns/docbook">
<refnamediv>
<refname>slewrate</refname>
<refpurpose> returns the slew rate for all transitions found in the bilevel waveform</refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>Calling Sequence</title>
<synopsis>
s=slewrate(x)
s=slewrate(x, t)
s=slewrate(x, Fs)
s=slewrate(x, t, 'PercentReferenceLevels', N )
s=slewrate(x, t, 'Tolerance', M)
s=slewrate(x, t,'StateLevels', O)
[s lowercrossvalue uppercrossvalue lowerreference upperreference]=slewrate(x)
[s lowercrossvalue uppercrossvalue lowerreference upperreference]=slewrate(x, t)
[s lowercrossvalue uppercrossvalue lowerreference upperreference]=slewrate(x, Fs)
[s lowercrossvalue uppercrossvalue lowerreference upperreference]=slewrate(x, t, 'PercentReferenceLevels', N )
[s lowercrossvalue uppercrossvalue lowerreference upperreference]= slewrate(x, t, 'Tolerance', M)
[s lowercrossvalue uppercrossvalue lowerreference upperreference]= slewrate(x, t,'StateLevels', O)
[s lowercrossvalue uppercrossvalue lowerreference upperreference]= slewrate(x, t,'StateLevels', O, 'fig', on or off)
</synopsis>
</refsynopsisdiv>
<refsection>
<title>Description</title>
returns the slew rate for all transitions found in the bilevel waveform, X. The slew rate is the slope of the line connecting the 10% and 90% reference levels. The sample instants of X are the indices of the vector. To determine the transitions, slewrate estimates the state levels of the input waveform by a histogram method. slewrate identifies all regions that cross the upper-state boundary of the low state and the lower-state boundary of the high state. The low-state and high-state boundaries are expressed as the state level plus or minus a multiple of the difference between the state levels.
</refsection>
<refsection>
<title>Examples</title>
<programlisting role="example"><![CDATA[
x=[ones(1,25) -ones(1,25) ones(1,25) ]
t=1:length(x)
s=slewrate(x,t)
//EXPECTED OUTPUT:
//s = - 2 2
]]></programlisting>
</refsection>
</refentry>
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