带宽分割的TikZ代码：显示问题

Question

我想以图形方式说明带宽分段器。为此，我想在 TikZ

中表示下图

到目前为止，我有以下 LaTeX 代码

\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{positioning,calc}
\usepackage{amsmath, amssymb, mathtools}
\usepackage{physics}



\newcounter{cnt}\setcounter{cnt}{0}
\begin{document}
    \tikzset{str_to_vec/.style = {rectangle, draw, minimum width=3cm, text centered}}
    \tikzset{modulus2/.style = {rectangle, draw, text centered}}
    \tikzset{thresh/.style = {rectangle, draw, text centered}}
    \tikzset{dottedline/.style = {ultra thick, loosely dotted,shorten >=1mm, shorten <=1mm}}
    \begin{tikzpicture}[>=latex]
        \node[rectangle, draw] (RX) at (0, 0) {Rx};
        \node[
            rectangle,
            draw,
            minimum height=3cm,
            text width=1.8cm,
            text centered
            ]
        (PFB_CHANNELIZER) at ($(RX) + (3, 0)$)
        {PFB\ Channelizer};

        \draw[->]
        (RX)
        --
        (
        $(PFB_CHANNELIZER.north west)
        !0.5!
        (PFB_CHANNELIZER.south west)$
        );

        \foreach \i in {0.15, 0.35}
        {
            \draw[->]
            (
            $(PFB_CHANNELIZER.north east)
            !\i!
            (PFB_CHANNELIZER.south east)$
            )
            coordinate (PFB_\thecnt)
            to
            ++(1.5, 0)
            coordinate (STR_TO_VEC_\thecnt)
            node[str_to_vec, anchor=west] {stream to vector};

            \draw[->]
            (STR_TO_VEC_\thecnt.east)
            to
            ++(5, 0)
            coordinate (MODULUS2_\thecnt)
            node[modulus2, anchor=west] {$\norm{\cdot}^2$};

            \draw[->]
            (MODULUS2_\thecnt.east)
            to
            ++(5, 0)
            coordinate (THRESHOLD_\thecnt)
            node[thresh, anchor=west] {threshold};
            \stepcounter{cnt}
        }

        \draw[->]
        (
        $(PFB_CHANNELIZER.north east)
        !0.85!
        (PFB_CHANNELIZER.south east)$
        )
        coordinate (PFB_3)
        to
        ++(1.5, 0)
        coordinate (STR_TO_VEC_3)
        node[str_to_vec, anchor=west] {stream to vector};

        \draw[->]
        (STR_TO_VEC_3.east)
        to
        ++(5, 0)
        coordinate (MODULUS2_3)
        node[modulus2, anchor=west] {$\norm{\cdot}^2$};

        \draw[->]
        (MODULUS2_3.east)
        to
        ++(5, 0)
        coordinate (THRESHOLD_3)
        node[thresh, anchor=west] {threshold};

        \draw[dottedline]
        (STR_TO_VEC_1.south)
        --
        (STR_TO_VEC_3.north);

        \draw[dottedline]
        (MODULUS2_1.south)
        --
        (MODULUS2_3.north);
    \end{tikzpicture}
\end{document}

这会产生一个奇怪的输出（可能是因为 anchor=west）选项，我不知道没有这些选项怎么办。有人可以帮我吗？谢谢你，祝你有愉快的一天，亚历克斯

Answer 1

问题是您是从上一个箭头而不是从上一个节点绘制箭头。如果您改为向节点添加名称（下例中的 foo），新箭头将不会绘制在旧节点上：

\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{positioning,calc}
\usepackage{amsmath, amssymb, mathtools}
\usepackage{physics}



\newcounter{cnt}\setcounter{cnt}{0}
\begin{document}
    \tikzset{str_to_vec/.style = {rectangle, draw, minimum width=3cm, text centered}}
    \tikzset{modulus2/.style = {rectangle, draw, text centered}}
    \tikzset{thresh/.style = {rectangle, draw, text centered}}
    \tikzset{dottedline/.style = {ultra thick, loosely dotted,shorten >=1mm, shorten <=1mm}}
    \begin{tikzpicture}[>=latex]

        \draw[->]
        (0,0)
        to
        ++(5, 0)
        coordinate (MODULUS2_3)
        node[modulus2, anchor=west] (foo) {$\norm{\cdot}^2$};

        \draw[->]
        (foo)
        to
        ++(5, 0)
        coordinate (THRESHOLD_3)
        node[thresh, anchor=west] {threshold};


    \end{tikzpicture}
\end{document}

Answer 2

感谢@samcarter_is_at_topanswers.xyz的回答，效果不错的代码是

\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{positioning,calc}
\usepackage{amsmath, amssymb, mathtools}
\usepackage{physics}



\newcounter{cnt}\setcounter{cnt}{0}
\begin{document}
    \tikzset{str_to_vec/.style = {rectangle, draw, minimum width=3cm, text centered}}
    \tikzset{modulus2/.style = {rectangle, draw, text centered}}
    \tikzset{thresh/.style = {rectangle, draw, text centered}}
    \tikzset{dottedline/.style = {ultra thick, loosely dotted,shorten >=1mm, shorten <=1mm}}
    \begin{tikzpicture}[>=latex]
        %===========
        %   NODES
        %===========
        \node[rectangle, draw] (RX) at (0, 0) {Rx};

        \node[
            rectangle,
            draw,
            minimum height=3cm,
            text width=1.8cm,
            text centered
            ]
        (PFB_CHANNELIZER) at ($(RX) + (3, 0)$)
        {PFB\ Channelizer};

        % %=================
        % %   CONNECTIONS
        % %=================
        \draw[->]
        (RX)
        --
        (
        $(PFB_CHANNELIZER.north west)
        !0.5!
        (PFB_CHANNELIZER.south west)$
        );

        \foreach \i in {0.15, 0.35}
        {
            \draw[->]
            (
            $(PFB_CHANNELIZER.north east)
            !\i!
            (PFB_CHANNELIZER.south east)$
            )
            coordinate (PFB_\thecnt)
            to
            ++(1.5, 0)
            node[str_to_vec, anchor=west] (STR_TO_VEC_\thecnt) {stream to vector};

            \draw[->]
            (STR_TO_VEC_\thecnt.east)
            to
            ++(1.5, 0)
            node[modulus2, anchor=west] (MODULUS2_\thecnt) {$\norm{\cdot}^2$};

            \draw[->]
            (MODULUS2_\thecnt.east)
            to
            ++(1.5, 0)
            node[thresh, anchor=west] (THRESHOLD_\thecnt) {threshold};
            \stepcounter{cnt}
        }

        \draw[->]
        (
        $(PFB_CHANNELIZER.north east)
        !0.85!
        (PFB_CHANNELIZER.south east)$
        )
        coordinate (PFB_3)
        to
        ++(1.5, 0)
        node[str_to_vec, anchor=west] (STR_TO_VEC_3) {stream to vector};

        \draw[->]
        (STR_TO_VEC_3.east)
        to
        ++(1.5, 0)
        node[modulus2, anchor=west] (MODULUS2_3) {$\norm{\cdot}^2$};

        \draw[->]
        (MODULUS2_3.east)
        to
        ++(1.5, 0)
        node[thresh, anchor=west] (THRESHOLD_3) {threshold};

        \draw[dottedline]
        (STR_TO_VEC_1.south)
        --
        (STR_TO_VEC_3.north);

        \draw[dottedline]
        (MODULUS2_1.south)
        --
        (MODULUS2_3.north);

        \draw[dottedline]
        (THRESHOLD_1.south)
        --
        (THRESHOLD_3.north);
    \end{tikzpicture}
\end{document}

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