ajhdsp.sty

\ProvidesPackage{ajhdsp}[2012/10/10 Alex's digital signal processing helpers]
\RequirePackage[free-standing-units]{siunitx}
\RequirePackage{amsmath,amssymb}
\RequirePackage{pgfplots,pgfplotstable}

\newcommand{\conv}[0]{\ast}
\newcommand{\convp}[0]{\circledast}
\newcommand{\marker}[1]{\ensuremath{\smash{\overset{\Downarrow}{#1}}}}
\DeclareMathOperator{\sinc}{sinc}
\DeclareMathOperator{\rect}{rect}

\pgfplotsset{
%
compat=1.5.1,
%
ajh dsp base plot/.style={
	scaled x ticks = false,
	x tick label style={/pgf/number format/fixed,},
},
%
full width/.style={
	scale only axis,
	height=0.25\textwidth,
	width=1\textwidth,
},
%
half size/.style={
	scale only axis,
	height=0.25\textwidth,
	width=0.45\textwidth,
},
%
pz plot/.style={
	every axis plot post/.style={
		only marks,
		mark options={scale=1.5},
	},
	height=2.75in, width=2.75in,
	axis x line=center,
	axis y line=center,
	every axis x label/.style={at={(current axis.right of origin)},anchor=west},
	every axis y label/.style={at={(current axis.above origin)},anchor=south},
	xmin=-1.1, xmax=1.1,
	ymin=-1.1, ymax=1.1,
	every tick label/.style={anchor=north east},
	xlabel={$\mathrm{Re}[z]$},
	ylabel={$\mathrm{Im}[z]$},
	execute at begin axis={\draw[gray!50,thin] (axis cs:0,0) circle[radius=1];},
},
%
discrete ir/.style={
	ajh dsp base plot,
	every axis plot post/.style={
		mark=*,
		mark options={scale=0.75},
		ycomb,
	},
	xmin=0,
	ymin=0,
	xlabel={$n$},
	ylabel={$x[n]$},
	axis x line=center,
	axis y line=center,
	every axis x label/.style={at={(current axis.right of origin)},anchor=west},
	every axis y label/.style={at={(current axis.above origin)},anchor=south},
},
%
continuous ir/.style={
	ajh dsp base plot,
	every axis plot post/.style={
		mark=none,
	},
	xmin=0,
	ymin=0,
	xlabel={$t$},
	ylabel={$x(t)$},
	axis x line=center,
	axis y line=center,
	every axis x label/.style={at={(current axis.right of origin)},anchor=west},
	every axis y label/.style={at={(current axis.above origin)},anchor=south},
},
%
continuous fr/.style={
	continuous ir,
	xmin=-0.59, xmax=0.59,
	xtick={-0.5,-0.3,...,0.5},
	xlabel={$F$},
	ylabel={$X(F)$},
},
%
discrete fr/.style={
	discrete ir,
	xmin=-0.59, xmax=0.59,
	ymin=0, ymax=1.19,
	xtick={-0.5,-0.3,...,0.5},
	xlabel={$F$},
	ylabel={$X(F)$},
},
%
}