具有形狀的二維相關圖矩陣

具有形狀的二維相關圖矩陣

有沒有一種簡單的方法來創建類似下圖的相關圖矩陣?

R corrplot 圓法

該圖像是 R 的範例corrplot 包裹使用圓圈,它還提供其他形狀和配色方案來繪製這些圖。理想情況下,我想使用 tikz/pgfplots 來完成此操作。

我想以表格格式繪製的資料類型的範例。前兩列是 X 和 Y 標籤,第三列包含值(例如,將表示為圓的半徑):

X   Y   value

0.7 0   0.80
1.5 0   0.80
3.8 0   0.80
9.9 0   0.80
19.7    0   0.80

0.7 1   0.61
1.5 1   0.61
3.8 1   0.64
9.9 1   0.62
19.7    1   0.61

0.7 2   0.53
1.5 2   0.54
3.8 2   0.57
9.9 2   0.53
19.7    2   0.52

0.7 5   0.52
1.5 5   0.52
3.8 5   0.55
9.9 5   0.49
19.7    5   0.49

0.7 10  0.52
1.5 10  0.53
3.8 10  0.56
9.9 10  0.50
19.7    10  0.50

答案1

這是實現此目的的一種方法:

\documentclass[border=5mm]{standalone}
\usepackage{pgfplots}
\usepgfplotslibrary{colorbrewer}
\begin{document}

\begin{tikzpicture}
\begin{axis}[
    axis equal image, % We want a square grid, not a rectangular one
    scatter, % This activates the color mapping
    colormap/viridis, % Choose the colormap
    colorbar, % Add a legend
    point meta min=0,
    point meta max=1,
    grid=minor, % Grid lines between the intervals
    minor tick num=1, % One minor tick per interval
    tickwidth=0pt, % Don't draw the major tick marks
    y dir=reverse, % Y increases downward
    xticklabel pos=right, % X axis labels go to the top
    enlargelimits={abs=0.5}, % Add half a unit on all sides
    scatter/@pre marker code/.append code={% A bit of magic for scaling the circles in axis units
      \pgfplotstransformcoordinatex{sqrt(abs(\pgfplotspointmeta))}% Area scales with the square of the radius
      \scope[mark size=\pgfplotsunitxlength*\pgfmathresult/2, fill=mapped color]
    },
    scatter/@post marker code/.append code={%
      \endscope%
    }
]
\addplot +[
    point meta=explicit, % We'll provide values for the color and size
    only marks, % No lines between the points
    ] table [
    x expr={int(mod(\coordindex+0.01,5))}, % The position depends on the coordinate index, not the X or Y values
    y expr={int((\coordindex+0.01)/5))},
    meta=value
] {
X   Y   value

0.7 0   0.80
1.5 0   0.80
3.8 0   0.80
9.9 0   0.5
19.7    0   0.08

0.7 1   0.61
1.5 1   0.61
3.8 1   0.64
9.9 1   0.62
19.7    1   0.61

0.7 2   0.53
1.5 2   0.54
3.8 2   0.57
9.9 2   0.53
19.7    2   0.52

0.7 5   0.52
1.5 5   0.52
3.8 5   0.55
9.9 5   0.49
19.7    5   0.49

0.7 10  0.52
1.5 10  0.53
3.8 10  0.56
9.9 10  0.50
19.7    10  0.50
};
\end{axis}
\end{tikzpicture}
\end{document}

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