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More efficient Time series : labels based on a table with dates

add tag

4 years ago JeT

Context

Time series are boring to read without labels…

My question

I’d like to have a systematic approach to comment upon a Time serie, as in this :

1 table to load VIX.dat
1 table with dates of interest I’d like to flag mydates.dat.

M(not so well)WE

Based on this for the metadata in label and this for the vertical line

\documentclass{standalone}

\usepackage{pgfplots}
\usepackage{pgfplotstable}
\usepgfplotslibrary{dateplot}
\pgfplotsset{compat=1.8}

%\definecolor{myuniversity}{RGB}{59, 33, 130}

\begin{filecontents*}[overwrite]{VIX.dat}
	date	variable
%Delete
2021-04-23	 18.50 
2021-04-22	 18.71 
2021-04-21	 17.50 
2021-04-20	 18.68 
2021-04-19	 17.29 
2021-04-16	 16.25 
2021-04-15	 16.57 
2021-04-14	 16.99 
2021-04-13	 16.65 
2021-04-12	 16.91 
2021-04-09	 16.69 
2021-04-08	 16.95 
2021-04-07	 17.16 
2021-04-06	 18.12 
2021-04-05	 17.91 
2021-04-01	 17.33 
2021-03-31	 19.40 
2021-03-30	 19.61 
2021-03-29	 20.74 
2021-03-26	 18.86 
2021-03-25	 19.81 
2021-03-24	 21.20 
2021-03-23	 20.30 
2021-03-22	 18.88 
2021-03-19	 20.95 
2021-03-18	 21.58 
2021-03-17	 19.23 
2021-03-16	 19.79 
2021-03-15	 20.03 
2021-03-12	 20.69 
2021-03-11	 21.91 
2021-03-10	 22.56 
2021-03-09	 24.03 
2021-03-08	 25.47 
2021-03-05	 24.66 
2021-03-04	 28.57 
2021-03-03	 26.67 
2021-03-02	 24.10 
2021-03-01	 23.35 
2021-02-26	 27.95 
2021-02-25	 28.89 
2021-02-24	 21.34 
2021-02-23	 23.11 
2021-02-22	 23.45 
2021-02-19	 22.05 
2021-02-18	 22.49 
2021-02-17	 21.50 
2021-02-16	 21.46 
2021-02-12	 19.97 
2021-02-11	 21.25 
2021-02-10	 21.99 
2021-02-09	 21.63 
2021-02-08	 21.24 
2021-02-05	 20.87 
2021-02-04	 21.77 
2021-02-03	 22.91 
2021-02-02	 25.56 
2021-02-01	 30.24 
2021-01-29	 33.09 
2021-01-28	 30.21 
2021-01-27	 37.21 
2021-01-26	 23.02 
2021-01-25	 23.19 
2021-01-22	 21.91 
2021-01-21	 21.32 
2021-01-20	 21.58 
2021-01-19	 23.24 
2021-01-15	 24.34 
2021-01-14	 23.25 
2021-01-13	 22.21 
2021-01-12	 23.33 
2021-01-11	 24.08 
2021-01-08	 21.56 
2021-01-07	 22.37 
2021-01-06	 25.07 
2021-01-05	 25.34 
2021-01-04	 26.97 
2020-12-31	 22.75 
2020-12-30	 22.77 
2020-12-29	 23.08 
2020-12-28	 21.70 
2020-12-24	 21.53 
2020-12-23	 23.31 
\end{filecontents*}

\begin{filecontents*}[overwrite]{mydates.dat}
	date	Label	position
	2021-02-24	 {It was a good day} 	0.5 % as in `[pos=0.5]`
	2021-01-10	 {Market's hangover} 	0.5
	2020-12-31	 {Happy new year} 		0.3
	2020-12-24	 {Merry Xmas} 			0.7
\end{filecontents*}


\begin{document}
\begin{tikzpicture}%[width=20cm,height=8cm]
		 
	\begin{axis}[
			date coordinates in=x,
			date ZERO=2020-12-23,
			xticklabel=\month-\day, %\year, 
			xticklabel style={rotate=90},
			enlarge x limits=false,
			ymin=0,
			xmin=2020-12-23, %date ZERO
			xmax=2021-03-24,
		]

		%The time serie
		\addplot[smooth,no markers] table [x=date,y=variable] {VIX.dat};
		
		%The dates where I need a vertical line + label
		% So far I just have the label
		% The vertical line shoule be based on date in mydates.dat
		% no rendering so far.

		\addplot[
			line width=1pt,
			mark=*,
			x=date,
			y=Label,
			nodes near coords,
			point meta=explicit symbolic,
			visualization depends on={value \thisrow{position}\as\mypos},
			every node near coord/.append style={font=\small,pos=\mypos}
		] table	[meta=Label] {mydates.dat};

	%\draw ({axis cs:date,0}|-{rel axis cs:0,1}) -- ({axis cs:1.2,0}|-{rel axis cs:0,0});

	\end{axis}		
\end{tikzpicture}
\end{document}

xxxxxxxxxx
 
\documentclass{standalone}​\usepackage{pgfplots}\usepackage{pgfplotstable}\usepgfplotslibrary{dateplot}\pgfplotsset{compat=1.8}​%\definecolor{myuniversity}{RGB}{59, 33, 130}​\begin{filecontents*}[overwrite]{VIX.dat}    date    variable%Delete2021-04-23   18.50 2021-04-22   18.71 2021-04-21   17.50 2021-04-20   18.68 2021-04-19   17.29 2021-04-16   16.25 2021-04-15   16.57 2021-04-14   16.99 2021-04-13   16.65 2021-04-12   16.91 2021-04-09   16.69 2021-04-08   16.95 2021-04-07   17.16 2021-04-06   18.12 2021-04-05   17.91 2021-04-01   17.33 2021-03-31   19.40 2021-03-30   19.61 2021-03-29   20.74 2021-03-26   18.86 2021-03-25   19.81 2021-03-24   21.20 2021-03-23   20.30 2021-03-22   18.88 2021-03-19   20.95 2021-03-18   21.58 2021-03-17   19.23 2021-03-16   19.79 2021-03-15   20.03 2021-03-12   20.69 2021-03-11   21.91 2021-03-10   22.56 2021-03-09   24.03 2021-03-08   25.47 2021-03-05   24.66 2021-03-04   28.57 2021-03-03   26.67 2021-03-02   24.10 2021-03-01   23.35 2021-02-26   27.95 2021-02-25   28.89 2021-02-24   21.34 2021-02-23   23.11 2021-02-22   23.45 2021-02-19   22.05 2021-02-18   22.49 2021-02-17   21.50 2021-02-16   21.46 2021-02-12   19.97 2021-02-11   21.25 2021-02-10   21.99 2021-02-09   21.63 2021-02-08   21.24 2021-02-05   20.87 2021-02-04   21.77 2021-02-03   22.91 2021-02-02   25.56 2021-02-01   30.24 2021-01-29   33.09 2021-01-28   30.21 2021-01-27   37.21 2021-01-26   23.02 2021-01-25   23.19 2021-01-22   21.91 2021-01-21   21.32 2021-01-20   21.58 2021-01-19   23.24 2021-01-15   24.34 2021-01-14   23.25 2021-01-13   22.21 2021-01-12   23.33 2021-01-11   24.08 2021-01-08   21.56 2021-01-07   22.37 2021-01-06   25.07 2021-01-05   25.34 2021-01-04   26.97 2020-12-31   22.75 2020-12-30   22.77 2020-12-29   23.08 2020-12-28   21.70 2020-12-24   21.53 2020-12-23   23.31 \end{filecontents*}​\begin{filecontents*}[overwrite]{mydates.dat}    date    Label   position    2021-02-24   {It was a good day}    0.5 % as in `[pos=0.5]`    2021-01-10   {Market's hangover}    0.5    2020-12-31   {Happy new year}       0.3    2020-12-24   {Merry Xmas}           0.7\end{filecontents*}​​\begin{document}\begin{tikzpicture}%[width=20cm,height=8cm]             \begin{axis}[            date coordinates in=x,            date ZERO=2020-12-23,            xticklabel=\month-\day, %\year,             xticklabel style={rotate=90},            enlarge x limits=false,            ymin=0,            xmin=2020-12-23, %date ZERO            xmax=2021-03-24,        ]​        %The time serie        \addplot[smooth,no markers] table [x=date,y=variable] {VIX.dat};                %The dates where I need a vertical line + label        % So far I just have the label        % The vertical line shoule be based on date in mydates.dat        % no rendering so far.​        \addplot[            line width=1pt,            mark=*,            x=date,            y=Label,            nodes near coords,            point meta=explicit symbolic,            visualization depends on={value \thisrow{position}\as\mypos},            every node near coord/.append style={font=\small,pos=\mypos}        ] table [meta=Label] {mydates.dat};​    %\draw ({axis cs:date,0}|-{rel axis cs:0,1}) -- ({axis cs:1.2,0}|-{rel axis cs:0,0});​    \end{axis}      \end{tikzpicture}\end{document}
show all 144 lines

Top Answer

4 years ago user 3.14159

This answer has two codes:

placing the texts at some absolute y values, and
placing the texts at some fractions of the height of the axis.

It is fairly easy to add the vertical lines around the nodes near coords via append after command. The current output isn’t pretty but in principle this syntax allows you to produce the target plot.

\documentclass{standalone}
\usepackage{pgfplots}
\usepackage{pgfplotstable}
\usepgfplotslibrary{dateplot}
\pgfplotsset{compat=1.17}

%\definecolor{myuniversity}{RGB}{59, 33, 130}

\begin{filecontents*}[overwrite]{VIX.dat}
date	variable
2021-04-23	 18.50 
2021-04-22	 18.71 
2021-04-21	 17.50 
2021-04-20	 18.68 
2021-04-19	 17.29 
2021-04-16	 16.25 
2021-04-15	 16.57 
2021-04-14	 16.99 
2021-04-13	 16.65 
2021-04-12	 16.91 
2021-04-09	 16.69 
2021-04-08	 16.95 
2021-04-07	 17.16 
2021-04-06	 18.12 
2021-04-05	 17.91 
2021-04-01	 17.33 
2021-03-31	 19.40 
2021-03-30	 19.61 
2021-03-29	 20.74 
2021-03-26	 18.86 
2021-03-25	 19.81 
2021-03-24	 21.20 
2021-03-23	 20.30 
2021-03-22	 18.88 
2021-03-19	 20.95 
2021-03-18	 21.58 
2021-03-17	 19.23 
2021-03-16	 19.79 
2021-03-15	 20.03 
2021-03-12	 20.69 
2021-03-11	 21.91 
2021-03-10	 22.56 
2021-03-09	 24.03 
2021-03-08	 25.47 
2021-03-05	 24.66 
2021-03-04	 28.57 
2021-03-03	 26.67 
2021-03-02	 24.10 
2021-03-01	 23.35 
2021-02-26	 27.95 
2021-02-25	 28.89 
2021-02-24	 21.34 
2021-02-23	 23.11 
2021-02-22	 23.45 
2021-02-19	 22.05 
2021-02-18	 22.49 
2021-02-17	 21.50 
2021-02-16	 21.46 
2021-02-12	 19.97 
2021-02-11	 21.25 
2021-02-10	 21.99 
2021-02-09	 21.63 
2021-02-08	 21.24 
2021-02-05	 20.87 
2021-02-04	 21.77 
2021-02-03	 22.91 
2021-02-02	 25.56 
2021-02-01	 30.24 
2021-01-29	 33.09 
2021-01-28	 30.21 
2021-01-27	 37.21 
2021-01-26	 23.02 
2021-01-25	 23.19 
2021-01-22	 21.91 
2021-01-21	 21.32 
2021-01-20	 21.58 
2021-01-19	 23.24 
2021-01-15	 24.34 
2021-01-14	 23.25 
2021-01-13	 22.21 
2021-01-12	 23.33 
2021-01-11	 24.08 
2021-01-08	 21.56 
2021-01-07	 22.37 
2021-01-06	 25.07 
2021-01-05	 25.34 
2021-01-04	 26.97 
2020-12-31	 22.75 
2020-12-30	 22.77 
2020-12-29	 23.08 
2020-12-28	 21.70 
2020-12-24	 21.53 
2020-12-23	 23.31 
\end{filecontents*}

\begin{filecontents*}[overwrite]{mydates.dat}
date	Label	position
2021-02-24	 {It was\\ a good\\ day} 	30 
2021-01-10	 {Market's\\ hangover} 		35
2020-12-31	 {Happy\\ new\\ year} 		30
2020-12-24	 {Merry\\ Xmas} 			35
\end{filecontents*}


\begin{document}
\begin{tikzpicture}%[width=20cm,height=8cm]
		 
	\begin{axis}[
			date coordinates in=x,
			date ZERO=2020-12-23,
			xticklabel=\month-\day, %\year, 
			xticklabel style={rotate=90},
			enlarge x limits=false,
			%ymin=0,
			xmin=2020-12-23, %date ZERO
			xmax=2021-03-24,
		]

		%The time serie
		\addplot[smooth,no markers] table [x=date,y=variable] {VIX.dat};
		
		%The dates where I need a vertical line + label
		% So far I just have the label
		% The vertical line shoule be based on date in mydates.dat
		% no rendering so far.

		\addplot[no marks,draw=none,
			nodes near coords,
			point meta=explicit symbolic,
			%visualization depends on={value \thisrow{position}\as\mypos},
			every node near coord/.append style={font=\small\sffamily,
				align=center,
				alias=tmp,
				append after command={(tmp|-current axis.north)
				edge (tmp.north) (tmp|-current axis.south)
				edge (tmp.south)}}
		] table	[x=date,
			y=position,meta=Label] {mydates.dat};
	\end{axis}		
\end{tikzpicture}
\end{document}

xxxxxxxxxx
 
\documentclass{standalone}\usepackage{pgfplots}\usepackage{pgfplotstable}\usepgfplotslibrary{dateplot}\pgfplotsset{compat=1.17}​%\definecolor{myuniversity}{RGB}{59, 33, 130}​\begin{filecontents*}[overwrite]{VIX.dat}date    variable2021-04-23   18.50 2021-04-22   18.71 2021-04-21   17.50 2021-04-20   18.68 2021-04-19   17.29 2021-04-16   16.25 2021-04-15   16.57 2021-04-14   16.99 2021-04-13   16.65 2021-04-12   16.91 2021-04-09   16.69 2021-04-08   16.95 2021-04-07   17.16 2021-04-06   18.12 2021-04-05   17.91 2021-04-01   17.33 2021-03-31   19.40 2021-03-30   19.61 2021-03-29   20.74 2021-03-26   18.86 2021-03-25   19.81 2021-03-24   21.20 2021-03-23   20.30 2021-03-22   18.88 2021-03-19   20.95 2021-03-18   21.58 2021-03-17   19.23 2021-03-16   19.79 2021-03-15   20.03 2021-03-12   20.69 2021-03-11   21.91 2021-03-10   22.56 2021-03-09   24.03 2021-03-08   25.47 2021-03-05   24.66 2021-03-04   28.57 2021-03-03   26.67 2021-03-02   24.10 2021-03-01   23.35 2021-02-26   27.95 2021-02-25   28.89 2021-02-24   21.34 2021-02-23   23.11 2021-02-22   23.45 2021-02-19   22.05 2021-02-18   22.49 2021-02-17   21.50 2021-02-16   21.46 2021-02-12   19.97 2021-02-11   21.25 2021-02-10   21.99 2021-02-09   21.63 2021-02-08   21.24 2021-02-05   20.87 2021-02-04   21.77 2021-02-03   22.91 2021-02-02   25.56 2021-02-01   30.24 2021-01-29   33.09 2021-01-28   30.21 2021-01-27   37.21 2021-01-26   23.02 2021-01-25   23.19 2021-01-22   21.91 2021-01-21   21.32 2021-01-20   21.58 2021-01-19   23.24 2021-01-15   24.34 2021-01-14   23.25 2021-01-13   22.21 2021-01-12   23.33 2021-01-11   24.08 2021-01-08   21.56 2021-01-07   22.37 2021-01-06   25.07 2021-01-05   25.34 2021-01-04   26.97 2020-12-31   22.75 2020-12-30   22.77 2020-12-29   23.08 2020-12-28   21.70 2020-12-24   21.53 2020-12-23   23.31 \end{filecontents*}​\begin{filecontents*}[overwrite]{mydates.dat}date    Label   position2021-02-24   {It was\\ a good\\ day}    30 2021-01-10   {Market's\\ hangover}      352020-12-31   {Happy\\ new\\ year}       302020-12-24   {Merry\\ Xmas}             35\end{filecontents*}​​\begin{document}\begin{tikzpicture}%[width=20cm,height=8cm]             \begin{axis}[            date coordinates in=x,            date ZERO=2020-12-23,            xticklabel=\month-\day, %\year,             xticklabel style={rotate=90},            enlarge x limits=false,            %ymin=0,            xmin=2020-12-23, %date ZERO            xmax=2021-03-24,        ]​        %The time serie        \addplot[smooth,no markers] table [x=date,y=variable] {VIX.dat};                %The dates where I need a vertical line + label        % So far I just have the label        % The vertical line shoule be based on date in mydates.dat        % no rendering so far.​        \addplot[no marks,draw=none,            nodes near coords,            point meta=explicit symbolic,            %visualization depends on={value \thisrow{position}\as\mypos},            every node near coord/.append style={font=\small\sffamily,                align=center,                alias=tmp,                append after command={(tmp|-current axis.north)                edge (tmp.north) (tmp|-current axis.south)                edge (tmp.south)}}        ] table [x=date,            y=position,meta=Label] {mydates.dat};    \end{axis}      \end{tikzpicture}\end{document}
show all 141 lines

You can also use a scatter plot (recall that nodes near coords is also a scatter plot) to draw the lines and position the nodes at some fraction of the vertical dimension of the plot. (Note that you currently have to set y expr to something reasonable by hand. The styles of the edges and nodes can be controlled via the edges and vnodes keys.)

\documentclass{standalone}
\usepackage{pgfplots}
\usepackage{pgfplotstable}
\usepgfplotslibrary{dateplot}

\pgfplotsset{compat=1.17}
\pgfplotsset{vertical markers/.code={\pgfplotsset{vmarks/.cd,#1}%
		\def\pv##1{\pgfkeysvalueof{/pgfplots/vmarks/##1}}%
		\pgfplotsset{scatter,only marks,mark=none,
		   scatter/@pre marker code/.append code={%
			\coordinate[overlay] (\pv{tmp name});
			\path[draw=none] (\pv{tmp name}|-current axis.south) -- 
				node[pos=\mypos,/pgfplots/vmarks/node style] 
				(\pv{tmp name}'){\mylabel}
			(\pv{tmp name}|-current axis.north)
			(\pv{tmp name}'.north) edge[/pgfplots/vmarks/edge style] 
				(\pv{tmp name}'.north|-current axis.north)
			(\pv{tmp name}'.south) edge[/pgfplots/vmarks/edge style] 
				(\pv{tmp name}'.south|-current axis.south);
			},
		 }%
	},
	vmarks/.cd,tmp name/.initial=tmp,edge style/.style={draw,solid},
	edges/.code={\pgfplotsset{vmarks/edge style/.append style={#1}}},
	node style/.style={},
	vnodes/.code={\pgfplotsset{vmarks/node style/.append style={#1}}}
	}	

%\definecolor{myuniversity}{RGB}{59, 33, 130}

\begin{filecontents*}[overwrite]{VIX.dat}
date	variable
2021-04-23	 18.50 
2021-04-22	 18.71 
2021-04-21	 17.50 
2021-04-20	 18.68 
2021-04-19	 17.29 
2021-04-16	 16.25 
2021-04-15	 16.57 
2021-04-14	 16.99 
2021-04-13	 16.65 
2021-04-12	 16.91 
2021-04-09	 16.69 
2021-04-08	 16.95 
2021-04-07	 17.16 
2021-04-06	 18.12 
2021-04-05	 17.91 
2021-04-01	 17.33 
2021-03-31	 19.40 
2021-03-30	 19.61 
2021-03-29	 20.74 
2021-03-26	 18.86 
2021-03-25	 19.81 
2021-03-24	 21.20 
2021-03-23	 20.30 
2021-03-22	 18.88 
2021-03-19	 20.95 
2021-03-18	 21.58 
2021-03-17	 19.23 
2021-03-16	 19.79 
2021-03-15	 20.03 
2021-03-12	 20.69 
2021-03-11	 21.91 
2021-03-10	 22.56 
2021-03-09	 24.03 
2021-03-08	 25.47 
2021-03-05	 24.66 
2021-03-04	 28.57 
2021-03-03	 26.67 
2021-03-02	 24.10 
2021-03-01	 23.35 
2021-02-26	 27.95 
2021-02-25	 28.89 
2021-02-24	 21.34 
2021-02-23	 23.11 
2021-02-22	 23.45 
2021-02-19	 22.05 
2021-02-18	 22.49 
2021-02-17	 21.50 
2021-02-16	 21.46 
2021-02-12	 19.97 
2021-02-11	 21.25 
2021-02-10	 21.99 
2021-02-09	 21.63 
2021-02-08	 21.24 
2021-02-05	 20.87 
2021-02-04	 21.77 
2021-02-03	 22.91 
2021-02-02	 25.56 
2021-02-01	 30.24 
2021-01-29	 33.09 
2021-01-28	 30.21 
2021-01-27	 37.21 
2021-01-26	 23.02 
2021-01-25	 23.19 
2021-01-22	 21.91 
2021-01-21	 21.32 
2021-01-20	 21.58 
2021-01-19	 23.24 
2021-01-15	 24.34 
2021-01-14	 23.25 
2021-01-13	 22.21 
2021-01-12	 23.33 
2021-01-11	 24.08 
2021-01-08	 21.56 
2021-01-07	 22.37 
2021-01-06	 25.07 
2021-01-05	 25.34 
2021-01-04	 26.97 
2020-12-31	 22.75 
2020-12-30	 22.77 
2020-12-29	 23.08 
2020-12-28	 21.70 
2020-12-24	 21.53 
2020-12-23	 23.31 
\end{filecontents*}

\begin{filecontents*}[overwrite]{mydates.dat}
date	Label	position
2021-02-24	 {It was\\ a good\\ day} 	0.5 
2021-01-10	 {Market's\\ hangover} 		0.5
2020-12-31	 {Happy\\ new\\ year} 		0.3
2020-12-24	 {Merry\\ Xmas} 			0.7
\end{filecontents*}


\begin{document}
\begin{tikzpicture}%[width=20cm,height=8cm]
		 
	\begin{axis}[
			date coordinates in=x,
			date ZERO=2020-12-23,
			xticklabel=\month-\day, %\year, 
			xticklabel style={rotate=90},
			enlarge x limits=false,
			%ymin=0,
			xmin=2020-12-23, %date ZERO
			xmax=2021-03-24,
		]

		%The time serie
		\addplot[smooth,no markers] table [x=date,y=variable] {VIX.dat};
		
		%The dates where I need a vertical line + label
		% So far I just have the label
		% The vertical line shoule be based on date in mydates.dat
		% no rendering so far.
		\addplot[visualization depends on={value \thisrow{Label}\as\mylabel},
			visualization depends on={value \thisrow{position}\as\mypos},
			vertical markers={vnodes={font=\small\sffamily,align=center}}
			]
			table	[x=date,y expr=30] {mydates.dat};
	\end{axis}		
\end{tikzpicture}
\end{document}

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\documentclass{standalone}\usepackage{pgfplots}\usepackage{pgfplotstable}\usepgfplotslibrary{dateplot}​\pgfplotsset{compat=1.17}\pgfplotsset{vertical markers/.code={\pgfplotsset{vmarks/.cd,#1}%        \def\pv##1{\pgfkeysvalueof{/pgfplots/vmarks/##1}}%        \pgfplotsset{scatter,only marks,mark=none,           scatter/@pre marker code/.append code={%            \coordinate[overlay] (\pv{tmp name});            \path[draw=none] (\pv{tmp name}|-current axis.south) --                 node[pos=\mypos,/pgfplots/vmarks/node style]                 (\pv{tmp name}'){\mylabel}            (\pv{tmp name}|-current axis.north)            (\pv{tmp name}'.north) edge[/pgfplots/vmarks/edge style]                 (\pv{tmp name}'.north|-current axis.north)            (\pv{tmp name}'.south) edge[/pgfplots/vmarks/edge style]                 (\pv{tmp name}'.south|-current axis.south);            },         }%    },    vmarks/.cd,tmp name/.initial=tmp,edge style/.style={draw,solid},    edges/.code={\pgfplotsset{vmarks/edge style/.append style={#1}}},    node style/.style={},    vnodes/.code={\pgfplotsset{vmarks/node style/.append style={#1}}}    }   ​%\definecolor{myuniversity}{RGB}{59, 33, 130}​\begin{filecontents*}[overwrite]{VIX.dat}date    variable2021-04-23   18.50 2021-04-22   18.71 2021-04-21   17.50 2021-04-20   18.68 2021-04-19   17.29 2021-04-16   16.25 2021-04-15   16.57 2021-04-14   16.99 2021-04-13   16.65 2021-04-12   16.91 2021-04-09   16.69 2021-04-08   16.95 2021-04-07   17.16 2021-04-06   18.12 2021-04-05   17.91 2021-04-01   17.33 2021-03-31   19.40 2021-03-30   19.61 2021-03-29   20.74 2021-03-26   18.86 2021-03-25   19.81 2021-03-24   21.20 2021-03-23   20.30 2021-03-22   18.88 2021-03-19   20.95 2021-03-18   21.58 2021-03-17   19.23 2021-03-16   19.79 2021-03-15   20.03 2021-03-12   20.69 2021-03-11   21.91 2021-03-10   22.56 2021-03-09   24.03 2021-03-08   25.47 2021-03-05   24.66 2021-03-04   28.57 2021-03-03   26.67 2021-03-02   24.10 2021-03-01   23.35 2021-02-26   27.95 2021-02-25   28.89 2021-02-24   21.34 2021-02-23   23.11 2021-02-22   23.45 2021-02-19   22.05 2021-02-18   22.49 2021-02-17   21.50 2021-02-16   21.46 2021-02-12   19.97 2021-02-11   21.25 2021-02-10   21.99 2021-02-09   21.63 2021-02-08   21.24 2021-02-05   20.87 2021-02-04   21.77 2021-02-03   22.91 2021-02-02   25.56 2021-02-01   30.24 2021-01-29   33.09 2021-01-28   30.21 2021-01-27   37.21 2021-01-26   23.02 2021-01-25   23.19 2021-01-22   21.91 2021-01-21   21.32 2021-01-20   21.58 2021-01-19   23.24 2021-01-15   24.34 2021-01-14   23.25 2021-01-13   22.21 2021-01-12   23.33 2021-01-11   24.08 2021-01-08   21.56 2021-01-07   22.37 2021-01-06   25.07 2021-01-05   25.34 2021-01-04   26.97 2020-12-31   22.75 2020-12-30   22.77 2020-12-29   23.08 2020-12-28   21.70 2020-12-24   21.53 2020-12-23   23.31 \end{filecontents*}​\begin{filecontents*}[overwrite]{mydates.dat}date    Label   position2021-02-24   {It was\\ a good\\ day}    0.5 2021-01-10   {Market's\\ hangover}      0.52020-12-31   {Happy\\ new\\ year}       0.32020-12-24   {Merry\\ Xmas}             0.7\end{filecontents*}​​\begin{document}\begin{tikzpicture}%[width=20cm,height=8cm]             \begin{axis}[            date coordinates in=x,            date ZERO=2020-12-23,            xticklabel=\month-\day, %\year,             xticklabel style={rotate=90},            enlarge x limits=false,            %ymin=0,            xmin=2020-12-23, %date ZERO            xmax=2021-03-24,        ]​        %The time serie        \addplot[smooth,no markers] table [x=date,y=variable] {VIX.dat};                %The dates where I need a vertical line + label        % So far I just have the label        % The vertical line shoule be based on date in mydates.dat        % no rendering so far.        \addplot[visualization depends on={value \thisrow{Label}\as\mylabel},            visualization depends on={value \thisrow{position}\as\mypos},            vertical markers={vnodes={font=\small\sffamily,align=center}}            ]            table   [x=date,y expr=30] {mydates.dat};    \end{axis}      \end{tikzpicture}\end{document}
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