更新：- 这似乎是 PGFPlots 处理 coords 附近的节点与 Tikz 装饰和褪色库不兼容的问题。我只是注释了 coords 附近的节点线，我在顶部图表中得到了波浪线，没有错误。但是，我仍然想知道将来如何在使用装饰时使用 coords 附近的节点。不过，我仍然不确定这是否构成错误报告。
原始问题：-我想使用 Tikz 装饰库在 PGFPlots 中装饰条形图。我发现当我尝试用锯齿形、蛇形或随机步骤来装饰它时，它会引发错误。但这似乎特定于条形图。我转到原始数据并尝试在直方图中装饰类似的数据（直方图分布本身是根据原始数据在 PGFPlots 中计算出来的），其中我获取原始数据集，使用 PGFPlots 绘制直方图并使用 Tikz 进行装饰。令我惊讶的是，如果我使用 PGFPlots 计算直方图，选项似乎与我在预处理数据上使用条形图时不同。我想将上图所示的条形图装饰成类似于下图所示的线边缘。我已附上生成两者的代码。我该怎么做？
\documentclass[12pt]{article}
\usepackage[usenames,dvipsnames,svgnames,table]{xcolor}
\usepackage[margin=1cm]{geometry}
\usepackage{pgfplots}
\usetikzlibrary{patterns,fadings}
\begin{filecontents*}{Total_Histogram.dat}
0.00000000e+00 2.00000000e+00
5.00000000e-01 0.00000000e+00
1.00000000e+00 3.00000000e+00
1.50000000e+00 3.00000000e+00
2.00000000e+00 4.00000000e+00
2.50000000e+00 1.00000000e+00
3.00000000e+00 2.00000000e+00
3.50000000e+00 1.00000000e+00
4.00000000e+00 2.00000000e+00
4.50000000e+00 2.00000000e+00
5.00000000e+00 3.00000000e+00
5.50000000e+00 5.00000000e+00
6.00000000e+00 3.00000000e+00
6.50000000e+00 4.00000000e+00
7.00000000e+00 7.00000000e+00
7.50000000e+00 5.00000000e+00
8.00000000e+00 4.00000000e+00
8.50000000e+00 0.00000000e+00
9.00000000e+00 2.00000000e+00
9.50000000e+00 2.00000000e+00
1.00000000e+01 1.00000000e+00
1.05000000e+01 0.00000000e+00
1.10000000e+01 3.00000000e+00
1.15000000e+01 2.00000000e+00
1.20000000e+01 0.00000000e+00
1.25000000e+01 0.00000000e+00
1.30000000e+01 1.00000000e+00
1.35000000e+01 0.00000000e+00
1.40000000e+01 0.00000000e+00
1.45000000e+01 0.00000000e+00
1.50000000e+01 0.00000000e+00
\end{filecontents*}
\begin{filecontents*}{Quiz1_Data_EE1100_Spring2014.txt}
0 1 1 0 3 4 9
0 0 0 0.5 1.5 2.5 4.5
1 1 0 0 1.5 2.5 6
0 0 0 0 1.5 4 5.5
1 1 1 1 3 4 11
1 1 0 0 0 1 3
1 0.5 0 0 3 0 4.5
1 0.5 0 0 0 0 1.5
1 1 1 0 3 4 10
1 0 1 1 0 4 7
1 1 0 0 1.5 6 9.5
1 0 0 0.5 1.5 4 7
1 0 0 0 1.5 4.5 7
0 0 1 0.5 1.5 2 5
1 0 0 0.5 3 1.5 6
1 1 1 1 3 6 13
1 1 0 0 0 6 8
0 0 0 0 0 0 0
0 1 1 1 1.5 1 5.5
0 1 0 0.5 3 7 11.5
1 1 1 0.5 3 1 7.5
1 1 0 0 1.5 2 5.5
1 0 0 0.5 1.5 1 4
1 1 1 1 2 1 7
1 0 1 0 1.5 2 5.5
1 0 1 0 3 3 8
1 0 0 0 0 1 2
1 1 0 0.5 1.5 3 7
1 1 1 0.5 3 1 7.5
0 1 1 0.5 3 2 7.5
1 1 0 0 1.5 8 11.5
1 0 0 0 0 0 1
0 0 1 0 3 1 5
1 1 0 0.5 3 2 7.5
0 1 0 0 1.5 0 2.5
1 1 0 0.5 3 1 6.5
1 1 1 1 3 4 11
1 1 1 0 1.5 5 9.5
1 1 1 0.5 1.5 3 8
1 0 0 0.5 0 2 3.5
1 0 1 0 1.5 3 6.5
0 1 1 1 3 3 9
1 0 0 0 0 1 2
1 0 1 0 1.5 3 6.5
1 1 0 0.5 0 1.5 4
1 1 1 0 0 4 7
0 0 0 0 1.5 0 1.5
1 1 1 0.5 1.5 6 11
1 1 1 0.5 1.5 3 8
0 0 0 0 0 0 0
1 1 0 0.5 3 1 6.5
1 1 1 0 0 4 7
0 1 0 0 0 0 1
1 0 1 0 0 0 2
1 0 0 0 0 4 5
0 1 0 0.5 1.5 0 3
0 1 0 0 0 0 1
1 0 0 0 0 1 2
1 0 1 0 1.5 2 5.5
1 0 1 0 0 4 6
1 1 1 0 1.5 3 7.5
0 0 0 0.5 0 1 1.5
\end{filecontents*}
\begin{document}
\pagestyle{empty}
\begin{tikzpicture}
\centering
\begin{axis}
[
width=\textwidth,
ybar,
ymin=0,
xtick=data,
xticklabel style={rotate=45},
legend columns=-1,
nodes near coords,
every node near coord/.append style={
rotate=30,
xshift=1mm,
inner sep=1pt,
color=gray
},
ytick={0,1,2,3,4,5,6,7},
ymajorgrids,
major grid style={thick,white},
axis on top,
tick pos=left,
xlabel=Total Points in Quiz-1,
ylabel=Number of Students,
x label style={at={(axis description cs:0.5,-0.05)},anchor=north},
title={\bf Performance of students in Quiz-1}
]
\addplot+[color=red!30,draw=black,forget plot] table [y index=1,x index=0,skip coords between index={5}{31}]{Total_Histogram.dat};
\addplot+[color=yellow!30,draw=black,forget plot] table [y index=1,x index=0,skip coords between index={0}{5},skip coords between index={11}{31}]{Total_Histogram.dat};
\addplot+[color=blue!30,draw=black,forget plot] table [y index=1,x index=0,skip coords between index={0}{11},skip coords between index={17}{31}]{Total_Histogram.dat};
\addplot+[color=green!30,draw=black] table [y index=1,x index=0,skip coords between index={0}{17}]{Total_Histogram.dat};
\node [fill=red!30,,decoration={random steps,segment length=6pt,amplitude=2pt},decorate] at (axis cs:0.65,3.75) {Attention};
\node [fill=yellow!30] at (axis cs:3.5,3.75) {C,D grades};
\node [fill=blue!30] at (axis cs:7,7.35) {B grade};
\node [fill=green!30] at (axis cs:11,3.75) {A,S grades};
\draw [->,blue,ultra thick] (axis cs:5.9,0) -- (axis cs:5.9,6.5) node [anchor=north east,draw=gray,xshift=-1.5mm]{Average=5.9};
\draw [<->,gray,ultra thick] (axis cs:-0.1,5.4) -- (axis cs:5.8,5.4) node [anchor=north,midway]{28 Students};
\draw [<->,gray,ultra thick] (axis cs:6.0,5.4) -- (axis cs:15,5.4) node [anchor=north,midway]{34 Students};
\end{axis}
\end{tikzpicture}
\tikzfading[name=middle,
top color=transparent!20,
bottom color=transparent!20,
middle color=transparent!50]
\begin{tikzpicture}[path fading=middle]
\begin{axis}[
width=\textwidth,
ymin=0,
title=Quiz-1 Total Points,
xtick=data,
x tick label style = {rotate=45},
ybar interval,
xtick align=outside,
xmajorgrids=false,
enlarge x limits=false,
ymajorgrids=true,
xlabel=Total points obtained,
ylabel=Number of Students,ytick=data,
x label style={at={(axis description cs:0.5,-0.05)},anchor=north},
thick
]
\addplot+[hist={bins=3,data min=0,data max=1.5},decorate,draw=black,path fading,fill=green!20,decoration={random steps,segment length=6pt,amplitude=1pt}] table [y index=1] {Quiz1_Data_EE1100_Spring2014.txt};
\addplot+[hist={bins=3,data min=0,data max=1.5},decorate,draw=black,path fading,decoration={random steps,segment length=6pt,amplitude=1pt}] table [y index=2] {Quiz1_Data_EE1100_Spring2014.txt};
\addplot+[hist={bins=3,data min=0,data max=1.5},decorate,draw=black,path fading,decoration={random steps,segment length=6pt,amplitude=1pt}] table [y index=3] {Quiz1_Data_EE1100_Spring2014.txt};
\addplot+[hist={bins=3,data min=0,data max=1.5},decorate,draw=black,path fading,decoration={random steps,segment length=6pt,amplitude=1pt}] table [y index=4] {Quiz1_Data_EE1100_Spring2014.txt};
\end{axis}
\end{tikzpicture}
\end{document}
通过注释坐标附近的节点并添加装饰，我得到了以下图像：-
但是，现在我不能再使用坐标附近的节点了。