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使用 pgfplots 绘制时间序列时出现 \pgfcalendar@datetojulian 错误

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使用 pgfplots 绘制时间序列时出现 \pgfcalendar@datetojulian 错误

我正在尝试使用从 WUnderground 气象站下载的数据绘制雨量图（每小时降水量与时间的关系，或数据文件中的第 10 列与第 1 列的关系）。时间列似乎已正确格式化为 ISO，但是，我收到以下错误：

错误：段落在 \pgfcalendar@datetojulian 完成之前结束。

--- TeX 说 --- \par l.39

--- 帮助 --- 命令参数中出现了一个不应包含空行的空行。您可能忘记了参数末尾的右括号。

我仔细检查了所有的牙套，它们似乎很平衡。也许我漏掉了什么。我该如何让它发挥作用？

这是我的 MWE：

\documentclass{standalone}

\usepackage{filecontents}
\begin{filecontents}{data.csv}

% There are 750 data rows in the file, so I only included the first three ones.    

Time,TemperatureC,DewpointC,PressurehPa,WindDirection,WindDirectionDegrees,WindSpeedKMH,WindSpeedGustKMH,Humidity,HourlyPrecipMM,Conditions,Clouds,dailyrainMM,SoftwareType,DateUTC,
2012-10-23 00:00:00,24.8,21.9,1010.0,North,360,1.6,1.6,84,0.0,,,0.0,Wunderground v.1.15,2012-10-23 04:00:00, 
2012-10-23 00:05:00,24.9,22.0,1010.0,NNW,348,1.6,4.8,84,0.0,,,0.0,Wunderground v.1.15,2012-10-23 04:05:00, 
2012-10-23 00:10:00,24.8,21.9,1010.0,North,349,3.2,9.7,84,0.0,,,0.0,Wunderground v.1.15,2012-10-23 04:10:00, 


% UNITS
\usepackage{siunitx}
\sisetup{%
  per=slash, %
  load=abbr, %
  load=prefixed, %
  group-separator = {,},%
  range-phrase = {--}% 
}

% PGFPLOTS and TABLES
 \usepackage{tikz}
 \usepackage{pgfplots}
   \pgfplotsset{width=7cm,compat=1.3}
   \usepgfplotslibrary{dateplot}
 \usepackage{pgfplotstable}
   \pgfplotstableset{col sep=comma}



\begin{document}

\pgfplotstableread{data.csv}\data

  \begin{tikzpicture}
    \begin{axis}[
      date coordinates in=x,
      xtick=data, 
      xticklabel style={rotate=90,anchor=near xticklabel},
      xticklabel=\day. \hour:\minute,
      date ZERO=2012-10-23,
      xlabel=Time,
      ylabel=Precipitation
      ]
      \addplot+[ybar] table[x index=1,y=HourlyPrecipMM] {\data};
         % x index is used because the header Time refuses to be recognized.
    \end{axis}
  \end{tikzpicture}

\end{document}

答案1

使用时的索引x index从 开始，因此在这种情况下0您需要使用。但是，对我来说工作正常。您可以检查以下内容是否适合您（我已经完成了 MWE 并放入了一些更令人兴奋的虚拟数据）：x index=0x=Time

\documentclass{standalone}

\usepackage{filecontents}
\begin{filecontents}{data.csv}
Time,TemperatureC,DewpointC,PressurehPa,WindDirection,WindDirectionDegrees,WindSpeedKMH,WindSpeedGustKMH,Humidity,HourlyPrecipMM,Conditions,Clouds,dailyrainMM,SoftwareType,DateUTC,
2012-10-23 00:00:00,24.8,21.9,1010.0,North,360,1.6,1.6,84,1.0,,,0.0,Wunderground v.1.15,2012-10-23 04:00:00, 
2012-10-23 00:05:00,24.9,22.0,1010.0,NNW,348,1.6,4.8,84,0.4,,,0.0,Wunderground v.1.15,2012-10-23 04:05:00, 
2012-10-23 00:10:00,24.8,21.9,1010.0,North,349,3.2,9.7,84,2.0,,,0.0,Wunderground v.1.15,2012-10-23 04:10:00, 
\end{filecontents}

% UNITS
\usepackage{siunitx}
\sisetup{%
  per=slash, %
  load=abbr, %
  load=prefixed, %
  group-separator = {,},%
  range-phrase = {--}% 
}

% PGFPLOTS and TABLES
 \usepackage{tikz}
 \usepackage{pgfplots}
   \pgfplotsset{width=7cm,compat=1.3}
   \usepgfplotslibrary{dateplot}
 \usepackage{pgfplotstable}
   \pgfplotstableset{col sep=comma}



\begin{document}

\pgfplotstableread{data.csv}\data

  \begin{tikzpicture}
    \begin{axis}[
      date coordinates in=x,
      xtick=data, 
      xticklabel style={rotate=90,anchor=near xticklabel},
      xticklabel=\day. \hour:\minute,
      date ZERO=2012-10-23,
      xlabel=Time,
      ylabel=Precipitation,
      ybar
      ]
      \addplot table[x=Time,y=HourlyPrecipMM] {\data};
    \end{axis}
  \end{tikzpicture}

\end{document}

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