[Tex/LaTex] Blockdiagram with dsp library

diagramstikz-pgf

I am using the dsp library, http://www.texample.net/tikz/examples/fir-filter/, to create a blockdiagram. Now I got 2 problems.

I defined two labels, r and d_i however they are not visible on the screenshot because I believe the standalone package cuts down to the current shape (does not see the labels?).
Is anyone capable of changing the plus symbol in the library. I namely want a plus symbol like in matlab or can give a different solution such that I can create e.g.

        -
    -----O-----
        +|
         |
         |_____

enter image description here

code:

\documentclass{standalone}
\usepackage{graphics}
\usepackage{siunitx}
\usepackage{tikz}
\usetikzlibrary{dsp,chains}
\usepackage{pgfplots}
\usepgfplotslibrary{groupplots}
\pgfplotsset{compat=newest}
\pgfplotsset{plot coordinates/math parser=false}

\DeclareMathAlphabet{\mathpzc}{OT1}{pzc}{m}{it}
\newcommand{\z}{\mathpzc{z}}

\begin{document}
\begin{tikzpicture}
    \matrix[row sep=2.5mm, column sep=5mm] {
                                              &
                                              &
                                              &
                                              &
                                              &
                                              &
                                              &
                                              &
        \node[dspnodeopen,dsp/label=above] (m08) {$d_i$};     &
                                              &
                                              &
                                              \\
        %--------------------------------------------------------------------
        \\
        %--------------------------------------------------------------------
        \node[dspnodeopen,dsp/label=left]  (m10) {$r$};       &
        \node[coordinate]                  (m11) {};          &
        \node[dspadder]                    (m12) {};          &
        \node[coordinate,dsp/label=above]  (m13) {$e$};       &
        \node[dspsquare]                   (m14) {$K$};       &
        \node[coordinate]                  (m15) {$u$};       &
        \node[dspsquare]                   (m16) {$T_u$};     &
        \node[coordinate]                  (m17) {};          &
        \node[dspadder]                    (m18) {};          &
        \node[coordinate]                  (m19) {};          &
        \node[dspsquare]                   (m1A) {$G$};       &
        \node[coordinate]                  (m1X) {};          \\
        %--------------------------------------------------------------------
        \\
        %--------------------------------------------------------------------
                                              &
                                              &
        \node[coordinate,dsp/label=left]   (m22) {$t$};       &
                                              &
                                              &
                                              &
                                              &
                                              &
                                              &
                                              &
        \node[dspsquare]                   (m2A) {$T_y$};     &
        \node[coordinate]                  (m2X) {};          \\
        %--------------------------------------------------------------------
        \\
    };

    % Draw connections
    \begin{scope}[start chain]
        \chainin (m10);
        \chainin (m12) [join=by dspconn];
        \chainin (m14) [join=by dspconn];
        \chainin (m16) [join=by dspconn];
        \chainin (m18) [join=by dspconn];
        \chainin (m1A) [join=by dspconn];
        \chainin (m1X) [join=by dspline];
        \chainin (m2X) [join=by dspline];
        \chainin (m2A) [join=by dspconn];
        \chainin (m22) [join=by dspline];
        \chainin (m12) [join=by dspconn];
    \end{scope}

    \draw[dspconn] (m08) -- (m18);

\end{tikzpicture}
\end{document}

Best Answer

Here's one possible solution:

You can use the border key specifying appropriate lengths to be added to the top and to the left.
I defined a new shape dspvoidshapeadder suppressing the plus sign from the original dspshapeadder; using this new shape I defined a new style vdspadder using the newly defined shape and adding the + and - labels.

The code:

\documentclass[border={10pt 0pt 0pt 10pt}]{standalone}
\usepackage{graphics}
\usepackage{siunitx}
\usepackage{tikz}
\usetikzlibrary{dsp,chains}
\usepackage{pgfplots}
\usepgfplotslibrary{groupplots}
\pgfplotsset{compat=newest}
\pgfplotsset{plot coordinates/math parser=false}

\DeclareMathAlphabet{\mathpzc}{OT1}{pzc}{m}{it}
\newcommand{\z}{\mathpzc{z}}

\makeatletter
\dspdeclareoperator{dspvoidshapeadder}{
    % Coordinate offset for the plus
    \pgfutil@tempdima=\radius
    \pgfutil@tempdima=0.55\pgfutil@tempdima
    \pgfusepathqstroke
}
\tikzset{vdspadder/.style={shape=dspvoidshapeadder,line cap=rect,line join=rect,
    line width=\dspblocklinewidth,minimum size=\dspoperatordiameter,label=below left:$+$,label=above left:$-$}}
\makeatother
\begin{document}
\begin{tikzpicture}
    \matrix[row sep=2.5mm, column sep=5mm] {
                                              &
                                              &
                                              &
                                              &
                                              &
                                              &
                                              &
                                              &
        \node[dspnodeopen,dsp/label=above] (m08) {$d_i$};     &
                                              &
                                              &
                                              \\
        %--------------------------------------------------------------------
        \\
        %--------------------------------------------------------------------
        \node[dspnodeopen,dsp/label=left]  (m10) {$r$};       &
        \node[coordinate]                  (m11) {};          &
        \node[vdspadder]                   (m12) {};          &
        \node[coordinate,dsp/label=above]  (m13) {$e$};       &
        \node[dspsquare]                   (m14) {$K$};       &
        \node[coordinate]                  (m15) {$u$};       &
        \node[dspsquare]                   (m16) {$T_u$};     &
        \node[coordinate]                  (m17) {};          &
        \node[vdspadder]                    (m18) {};          &
        \node[coordinate]                  (m19) {};          &
        \node[dspsquare]                   (m1A) {$G$};       &
        \node[coordinate]                  (m1X) {};          \\
        %--------------------------------------------------------------------
        \\
        %--------------------------------------------------------------------
                                              &
                                              &
        \node[coordinate,dsp/label=left]   (m22) {$t$};       &
                                              &
                                              &
                                              &
                                              &
                                              &
                                              &
                                              &
        \node[dspsquare]                   (m2A) {$T_y$};     &
        \node[coordinate]                  (m2X) {};          \\
        %--------------------------------------------------------------------
        \\
    };

    % Draw connections
    \begin{scope}[start chain]
        \chainin (m10);
        \chainin (m12) [join=by dspconn];
        \chainin (m14) [join=by dspconn];
        \chainin (m16) [join=by dspconn];
        \chainin (m18) [join=by dspconn];
        \chainin (m1A) [join=by dspconn];
        \chainin (m1X) [join=by dspline];
        \chainin (m2X) [join=by dspline];
        \chainin (m2A) [join=by dspconn];
        \chainin (m22) [join=by dspline];
        \chainin (m12) [join=by dspconn];
    \end{scope}

    \draw[dspconn] (m08) -- (m18);

\end{tikzpicture}
\end{document}

enter image description here

The answers to specific questions:

Use standard TikZ shapes. The speaker, for example, is simply a rotated trapezium from the shapes.geometric library.
No need for additional tweaks. You can use the standard minimum height key for the dspfilter nodes.
I placed an auxiliary coordinate at adfilt.center (slightly shifted downwards to preven the line from overlapping the "F") and then used the ( $ (<name1>)!<length>!(<name2>) $ ) from the calc library.
You can use to[out=<angle1>,in=<angle2>].
I placed the desired labels to the add node.

In a comment, some problem with cut labels was mentioned when including the figure from an external file. In this case, I'd suggest you to use the standalone class to produce your image as a separate pdf file that then can be easily included in your document using the standard \includegraphics mechanism from graphicx; you can use the border option for standalone to control the padding around your figure, in case it is required:

For example, save the following as, say, MyImage.tex:

\documentclass[tikz,border=10pt]{standalone}
\usetikzlibrary{dsp,chains,calc,shapes.geometric}

\begin{document}

\begin{tikzpicture}

% Blocks and nodes
\node[dspnodeopen,dsp/label=below] 
  (ns) {$v(t)$}; 
\node[left=of ns,fill=gray,circle,draw] 
  (mic) {};
\draw ([yshift=8pt]mic.east) -- ([yshift=-8pt]mic.east);
\node[dspadder,left=of mic,left=1.5cm,label={above right:$-$},label={below right:$+$}] 
  (add) {};
\node[coordinate,left=of add,left=2.35cm]
  (fp1) {};
\node[dspfilter,minimum height=2cm,above=of fp1,above=1.5cm]
  (gain) {$G$};
\node[coordinate,above=of gain,above=1.5cm]
  (fp2) {};
\node[dspnodefull,right=of fp2,right=2.55cm]
  (adnode) {$u(t)$};
\node[dspfilter,minimum height=2cm,right=of gain,right=1.15cm] 
  (adfilt) {$\hat{F}$};
\node[draw,right= 4cm of fp2,fill=gray,trapezium,shape border rotate=90,shape border uses incircle]
  (ls) {};
\draw ([yshift=-10pt]ls.west) -- ([yshift=10pt]ls.west);
\node[dspfilter,minimum height=2cm,right=of gain,right=4cm]
  (feedback) {F};
\node[dspnodefull,left=of add]
  (afupd1) {};
\node[coordinate,above=of afupd1,above=1cm]
  (afupd2) {};
\coordinate (aux) at ([yshift=-4pt]adfilt.center);
% Connections

\draw[dspconn] (ns) -- (mic);
\draw[dspconn] (mic) -- node[midway,below=0.09cm] {$y(t)$} (add);
\draw[dspline] (add) -- node[midway,below] {$d[t,\hat{\mathbf{f}}(t)]$} (fp1);
\draw[dspline,dashed] (afupd1) -- (afupd2);
\draw[dspconn,dashed] (afupd2) -- ( $ (afupd2)!2.7cm!(aux) $ );
\draw[dspconn] (fp1) -- (gain);
\draw[dspline] (gain) -- (fp2);
\draw[dspline] (fp2) -- (adnode);
\draw[dspconn] (adnode) -- (ls);
\draw[dspconn] (adnode) -- (adfilt);
\draw[dspconn] (adfilt) -- node[midway,right] {$\hat{y}[t |\hat{\mathbf{f}}(t)]$} (add);
\draw[dspconn] (ls) to[out=0,in=90] (feedback);
\draw[dspconn] (feedback) to[out=-90,in=30] ([yshift=3pt]mic.east);

 \end{tikzpicture}

 \end{document}

After processing it through pdflatex you'll get a MyImage.pdf file looking like (gray area around the figure is not part of the resulting pdf):

enter image description here

Then you can use

\usepackage{graphicx}% in preamble
\includegraphics{MyImage}% in document body

in your .tex file to include the image. You can control individual margins with the boder key (refer to the standalone documentation).

[Tex/LaTex] TikZ/ERD: node (=Entity) label on the inside

I guess this is one way of doing it:

\documentclass[tikz,border=5]{standalone}

\usetikzlibrary{matrix}
\begin{document}
\tikzset{
    entity/.code={
        \tikzset{
            rounded corners,             
            name=#1,
            inner sep=2pt,
            every entity/.try,
        }%
        \def\entityname{#1}%
    },
    entity anchor/.style={matrix anchor=#1},
    every entity/.style={
            draw,
    },
    every property/.style={
        inner xsep=0.20cm, inner ysep=0.075cm, anchor=west, text width=1.75in
    }
}
\def\property#1{\node[name=\entityname-#1, every property/.try]{\propertysplit#1;};}
\def\properties{\begingroup\catcode`\_=11\relax\processproperties}
\def\processproperties#1{\endgroup%
    \gdef\propertycode{}%
    \foreach \p in {#1}{%
        \expandafter\expandafter\expandafter\gdef\expandafter\expandafter\expandafter\propertycode%
            \expandafter\expandafter\expandafter{\expandafter\propertycode\expandafter\property\expandafter{\p}\\}%
    }%
    \propertycode%
}
\def\propertysplit#1:#2;{#1:\hfill#2}

\def\entitynamenode{%
\node[every entity name/.try] (\entityname-name) {\entityname};
\draw (\entityname-name.south west) -- (\entityname-name.south east);
\\[1ex]
}
\tikzset{
  every entity name/.style={every property/.try, align=center}
}

\begin{tikzpicture}[every node/.style={font=\ttfamily}, node distance=0.5in]
\matrix [entity=Employee] {
    \entitynamenode
    \properties{
        Username :  varchar(255),
        Password :  varchar(255),        
        Name :  varchar(255),
        LastName :  varchar(255)
    }
};
\end{tikzpicture}   

\end{document}

enter image description here

Best Answer

Related Solutions

[Tex/LaTex] Block diagram with dsp/TikZ for adaptive feedback cancellation

The answers to specific questions:

[Tex/LaTex] TikZ/ERD: node (=Entity) label on the inside

Related Question