生成現金流量圖的最佳工具

我經常需要生成現金流量圖。

我想知道是否有人有一個很好的工具來生成它們 $ \LaTeX $ 還是圖片？

我在這個頁面上找到了一個很好的例子，使用 pgf/tikZ 包 $ \LaTeX $ .

該網站正在提供程式碼 $ \LaTeX $ ，如果您使用的是 LyX，為了獲得與網站相同的樣本，您必須執行以下操作。首先使用 Document->Settings 編輯文件序言：

\usepackage{siunitx}
\usepackage{tikz}
\usetikzlibrary{calc,matrix}

然後是程式碼塊中的以下內容：

\begin{tikzpicture}[>=stealth,ultra thick]
   \draw[->] (0,0) -- (10,0);
   \draw (-1,0) node[below] {n} (-1,0.5) node[above] {PMT};
   \foreach \x/\n in {1/0,3/1,5/2,7/3,9/4}
     \draw (\x,0) node(\n)[below] {\n} -- (\x,0.5);
   \foreach \x/\n in {1/0,3/1,5/2,7/3}
     \draw (\x,0.5) node[above] {\num{5000}};
   \matrix (calc) [matrix of math nodes,matrix anchor=north west,nodes={anchor=east}] at (9,-1) {%
     \$ \num{5300.00} & = & \num{5000}\times (\num{1.06})^1 \\
     \$ \num{5618.00} & = & \num{5000}\times (\num{1.06})^2 \\
     \$ \num{5955.08} & = & \num{5000}\times (\num{1.06})^3 \\
     \$ \num{6312.38} & = & \num{5000}\times (\num{1.06})^4 \\
     \$ \num{23185.46} \\
   };
   \draw[thick] (calc-5-1.north west) -- (calc-5-1.north east);
   \foreach \n/\l in {0/4,1/3,2/2,3/1}
     \draw[->,gray!50] (\n) |- ($(calc-\l-1.west)+(-0.5,0)$);
 \end{tikzpicture}

這可以使用帶有以下功能的 python 來完成（所有文件都可以在這個GitHub Repo中找到）：

import matplotlib.pyplot as plt
from matplotlib.ticker import MaxNLocator

def diagram (t, value, cashflow, c1="k", c2="k", currency="$", path = "test.png", aspect = [12,6], int_x = True, bar = True, show = False):

   fig, ax1 = plt.subplots(figsize=(aspect))

   # Define x axis as integer (optional)
   if int_x:
       ax1.xaxis.set_major_locator(MaxNLocator(integer=True))

   # Plot value (left axis) with color c1
   if (bar):
       ax1.bar(t, value, color = c1,  alpha= 0.3)
   else:
       ax1.plot(t, value, color = c1,  alpha= 0.3)
   ax1.set_xlabel('time (year)')

   # Set value label and currency
   ax1.set_ylabel('Future Value '+ currency, color = c1)
   ax1.tick_params('y', colors = c1)

   # Define twin axis for cashflow
   ax2 = ax1.twinx()

   # Find positive and negative values in cashflow
   pos = [i for i in range(len(cashflow)) if cashflow[i] > 0]
   neg = [i for i in range(len(cashflow)) if cashflow[i] < 0]

   # Plot cashflow (right axis) in the correct direction with color c2
   if (len(pos)):
       markerline, stemlines, baseline = ax2.stem(t[pos], cashflow[pos], markerfmt='^', basefmt=" ")
       plt.setp(stemlines, 'color', c2)
       plt.setp(markerline, 'color', c2)
   if (len(neg)):
       markerline, stemlines, baseline = ax2.stem(t[neg], cashflow[neg] ,markerfmt='v', basefmt=" ")
       plt.setp(stemlines, 'color', c2)
       plt.setp(markerline, 'color', c2)

   # Set cashflow label and currency
   ax2.set_ylabel('Cash Flow '+ currency, color=c2)
   ax2.tick_params('y', colors=c2)
   fig.tight_layout()

   # Remove the frame to visualize data more clearly
   ax1.spines['top'].set_visible(False)
   ax1.spines['right'].set_visible(False)
   ax1.spines['bottom'].set_visible(False)
   ax1.spines['left'].set_visible(False)
   ax2.spines['top'].set_visible(False)
   ax2.spines['right'].set_visible(False)
   ax2.spines['bottom'].set_visible(False)
   ax2.spines['left'].set_visible(False)

   # Save the plot to the specified path with 500dpi
   fig.savefig(path, dpi = 500)

   # Show plot (optional)
   plt.show (show) 

引用自：https://quant.stackexchange.com/questions/7750