语境
我想直观地解释价格的动态。
- 人们愿意以一定的价格、一定的数量出售
- 人们愿意为一定数量支付一定价格，出价
当买入价交叉（=）卖出价时，进行交易。
使用链来显示价格链最初是有意义的，但尽管我阅读了有关链的章节，我仍然对这个库感到困惑。
所以我决定回到下面的基本节点定义。结果部分完成了工作（它显示了价格网格），但是一旦使用我的代码，我就遇到了缩放问题，因为节点是绝对定义的。当价格描述为 100 时，我的定位没问题。但显然，当价格较低时，我有一个缩放效果，所有节点几乎都重叠了。
我的问题
我需要提高我的图表的可扩展性。
它应该如何工作？
价格边界由 4 个输入决定
\bid\offer\Nprices\tick
和
\Ubound = \offer + (\Nprices - 1)* \tick\Lbound = \bid - (\Nprices - 1)* \tick
我使用了 Excel 电子表格，因为我想获得相同的渲染效果。
示例 1
导致
价格的中央列（主链？）定义为\Ubound、\Lbound。出价链从 开始\bid，在左侧下方延伸。报价链从 开始，\offer在右侧上方延伸。主链上的灰色区域对应于\bid和之间可能出现的价格\offer。
示例 2
\tick现在是 0.5，我可以获得更多价格之间的粒度。
示例 3
\bid=\offer
到目前为止我得到了以下结果
渲染效果还不错
渲染不正常
渲染不正常
手动yscale=5使用
%My variables
\def\bid{10} %Bid price % 99 euros but any stock price
\def\offer{10} %Offer price % 101 euros but any stock price
\def\Qbid{50} %Bid Quantity % random numbers, not essential,
\def\Qoffer{50} %Offer Quantity % random numbers, not essential
\def\tick{0.1} %Tick for prices % tick between 2 prices, = 0.10,0.25,0.50,1, 5, 10...
\def\Nprices{3} % number of bids or offers in the chain of prices and quantities
我需要什么帮助？
我是否需要切换到链（叹气）来解决可扩展性问题？
感谢 schrodinger'scat，我有一个（仍然非常）手动的解决方案，用于整数价格。但是，如果价格不是整数，我会遇到循环问题。
我想突出显示最佳出价（最高出价）和最佳报价（最低报价），并将其他设置为
color=gray。图表的下一步将包括展示向买入价 = 卖出价收敛的想法，并可能在最后得到一个漂亮的动画。
我当然愿意接受任何提高可读性的建议。
\documentclass[tikz]{standalone} \usetikzlibrary {chains,scopes,fit,backgrounds} \usepackage{eurosym} \begin{document} %I define the conditions of what I want to highlight \newif\ifShowBid \ShowBidtrue \newif\ifShowOffer \ShowOffertrue \newif\ifShowSpread \ShowSpreadtrue %My variables \def\bid{100} %Bid price % 99 euros but any stock price \def\offer{100} %Offer price % 101 euros but any stock price \def\Qbid{50} %Bid Quantity % random numbers, not essential, \def\Qoffer{50} %Offer Quantity % random numbers, not essential \def\tick{1} %Tick for prices % tick between 2 prices, = 0.10,0.25,0.50,1, 5, 10... \def\Nprices{3} % number of bids or offers in the chain of prices and quantities \tikzset{ Pbid/.style={ rounded corners,draw=blue,fill=blue!20,text=blue,text width = 3em,align=center}, Poffer/.style={ Pbid,draw=red,fill=red!20,text=red!70}, Qbid/.style={ rectangle,fill=blue!20,draw=none,text=blue,text width = 2em,align=center}, Qoffer/.style={ Qbid,text=red,fill=red!20}, PriceDiscovery/.style={, fill= gray, ultra thick, rounded corners,opacity=0.5,draw=red, line width =3 pt}, } \begin{tikzpicture}[node distance=2mm and 0.3cm] \foreach [evaluate={ \Nbid = \bid - \i* \tick; % list of bids \Noffer = \offer + \i* \tick; % list of offers \Qbid = int(\Qbid - 10 *\i* rand); % list of Qbids \Qoffer = int(\Qoffer - 10 *\i* rand); % list of Qoffers }] \i in {0,...,\Nprices} { \node[Pbid] (bid-\i) at (0,\Nbid) {\euro{\Nbid}}; \node[Poffer] (offer-\i) at (1.5,\Noffer) {\euro{\Noffer}}; \node[Qbid,left=of bid-\i] (Qbid-\i) {$\times \Qbid$}; \node[Qoffer,right=of offer-\i] (Qoffer-\i) {$\times \Qoffer$}; } \ifnum \bid=\offer \node[fit=(Qbid-0)(Qoffer-0), draw,fill= red!50, rounded corners,opacity=0.5,label=right:{Trading level}] {}; \ShowBidfalse \ShowOfferfalse \ShowSpreadfalse \fi % I need to highlight different parts of the graph % 1- the whole set of bids and offers \ifShowSpread \begin{scope}[on background layer] \node[PriceDiscovery, fit=(Qbid-0.south west)(Qoffer-0.north east),label=right:{Best market}] {Price discovery area}; \end{scope} \fi % 2- the whole set of offers \ifShowOffer \begin{scope}[on background layer] \node[fit=(Qoffer-0)(offer-\Nprices), fill= red!50, rounded corners,opacity=0.5,label=right:{Offers}] {}; \end{scope} \fi % 3- the whole set of bids \ifShowBid \begin{scope}[on background layer] \node[fit=(Qbid-0)(bid-\Nprices), fill= blue!50, rounded corners,opacity=0.5,label=left:{Bids}] {}; \end{scope} \fi \end{tikzpicture} \end{document}
和编辑版本
\documentclass[tikz]{standalone}
\usetikzlibrary {chains,scopes,fit,backgrounds}
\usetikzlibrary{calc}
\usetikzlibrary{shapes}
\usepackage{eurosym}
\usepackage{verbatim}
\usepackage{xstring}
\begin{document}
\tikzset{
Pbid/.style={
rounded corners,draw=blue,fill=blue!20,text=blue,text width = 3em,align=center},
Poffer/.style={
Pbid,draw=red,fill=red!20,text=red!70},
Qbid/.style={
rectangle,fill=blue!20,draw=none,text=blue,text width = 2em,align=center},
Qoffer/.style={
Qbid,text=red,fill=red!20},
PriceDiscovery/.style={, fill= gray, ultra thick, rounded corners,opacity=0.5,draw=red, line width =3 pt},
}
%I define the conditions of what I want to highlight
\newif\ifShowBid %\ShowBidtrue
\newif\ifShowOffer %\ShowOffertrue
\newif\ifShowSpread \ShowSpreadtrue
\newif\ifShowPGrid %\ShowPGridtrue
%My variables
\def\bid{25} % Bid price % 99 euros but any stock price
\def\offer{25} % Offer price % 101 euros but any stock price
\def\Qbid{50} % Bid Quantity % random numbers, not essential,
\def\Qoffer{50} % Offer Quantity % random numbers, not essential
\def\tick{1} % Tick for prices % tick between 2 prices, = 0.10,0.25,0.50,1, 5, 10...
\def\Nprices{4} % number of bids or offers in the chain of prices and quantities
\def\X{1} % Same column = 0, otherwise symmetry
\def\Y{0.6} % yscale factor
%I'll use {\LBound,...,\UBound} later, if \tick is not integer, pb with \pgfmathtruncatemacro
\pgfmathtruncatemacro\LBound{\bid - \Nprices * \tick}
\pgfmathtruncatemacro\UBound{\offer + \Nprices * \tick}
\pgfmathtruncatemacro\a{\LBound + \tick}
\ifnum \bid=\offer
\pgfmathtruncatemacro\LSpread{\bid}
\pgfmathtruncatemacro\USpread{\offer}
\else
\pgfmathtruncatemacro\LSpread{\bid + \tick}
\pgfmathtruncatemacro\USpread{\offer - \tick}
\fi
%%
%\IfInteger{\tick}
% \pgfmathsetmacro\LBound{\bid - \Nprices * \tick}
% \pgfmathsetmacro\UBound{\offer + \Nprices * \tick}
% \pgfmathsetmacro\a{\LBound + \tick}
%
% \ifnum \bid=\offer
% \pgfmathsetmacro\LSpread{\bid}
% \pgfmathsetmacro\USpread{\offer}
% \else
% \pgfmathsetmacro\LSpread{\bid + \tick}
% \pgfmathsetmacro\USpread{\offer - \tick}
% \pgfmathsetmacro\b{\LSpread + \tick}
% \fi
\begin{tikzpicture}[yscale=\Y,node distance=10mm and 0.25cm]
% Price axis
\ifShowPGrid
\foreach \i in {\LBound,...,\UBound}
\node[gray] (P-\i) at (-\X-3,\i) {\euro{\i}};
\fi
% % Prices available in the discovery area
% \foreach \i in {\LSpread,\b,...,\USpread}
% \node[gray] (A) at (0,\i) {\euro{\i}};
\foreach
[evaluate={
\Nbid = \bid - \i* \tick; % list of bids
\Noffer = \offer + \i* \tick; % list of offers
\Qbid = int(\Qbid - 10 *\i* rand); % list of Qbids
\Qoffer = int(\Qoffer - 10 *\i* rand); % list of Qoffers
}] \i in {0,...,\Nprices}
{
\node[Pbid] (bid-\i) at (-\X,\Nbid) {\euro{\Nbid}};
\node[Poffer] (offer-\i) at (\X,\Noffer) {\euro{\Noffer}};
\node[Qbid,left=of bid-\i] (Qbid-\i) {$\times \Qbid$};
\node[Qoffer,right=of offer-\i] (Qoffer-\i) {$\times \Qoffer$};
}
\ifnum \bid=\offer
\node[fit=(Qbid-0)(Qoffer-0), draw,fill= red!50, rounded corners,opacity=0.5,label=right:{Trading level}] {};
\node[star,star points=7,star point ratio=0.4,fill=red,opacity=0.8] at ($(bid-0)!0.5!(offer-0)$) {};
\ShowBidfalse
\ShowOfferfalse
\ShowSpreadfalse
\else %%%% I'll do that manually in a poor way but it could be implied from \tick \bid and \offer
\def\a{\bid+\tick}
\def\b{\offer-\tick}
\fi
% I need to highlight different parts of the graph
% 1- the whole set of bids and offers
\ifShowSpread
\foreach \i in {\LSpread,...,\USpread}
\node[gray] (PD-\i) at (0,\i) {\euro{\i}};
\begin{scope}[on background layer]
\node[PriceDiscovery, fit=(bid-0.south west)(offer-0.north east),] {}; %label=right:{Price discovery area}
\end{scope}
\fi
% 2- the whole set of offers
\ifShowOffer
\begin{scope}[on background layer]
\node[fit=(Qoffer-0)(offer-\Nprices), fill= red!50, rounded corners,opacity=0.5,] {}; %label=right:{Offers}
\end{scope}
\fi
% 3- the whole set of bids
\ifShowBid
\begin{scope}[on background layer]
\node[fit=(Qbid-0)(bid-\Nprices), fill= blue!50, rounded corners,opacity=0.5,] {}; %label=left:{Bids}
\end{scope}
\fi
%Fleches
%\draw [thick, -latex] (offer-0.west) to [bend left] (offer-1.west);
%\draw [thick, -latex] (offer-1.west) to [bend left] (offer-2.west);
%\draw [thick, -latex] (offer-2.west) to [bend left] (offer-3.west);
%Fleches
%\draw [thick, -latex] (bid-0.east) to [bend left] (bid-1.east);
%\draw [thick, -latex] (bid-1.east) to [bend left] (bid-2.east);
%\draw [thick, -latex] (bid-2.east) to [bend left] (bid-3.east);
\end{tikzpicture}
\end{document}