How to insert degree Celsius symbol in node text in pgfplots/tikz?

Question

Here is my code.

\resizebox{\textwidth}{!}{
\begin{tikzpicture}
\selectcolormodel{gray}
\begin{axis}[xlabel=Voltage,ylabel=Current,title=IV Characteristics of PV Module]
\node[label={Set 1}] at (axis cs:2,60){};
\node[label=Set 2] at (axis cs:2,150){};
\node[label=Set 3] at (axis cs:2,240){};
\node[label=Set 4] at (axis cs:2,305){};
\addplot table [x=v1,y=i1, col sep=comma,mark=none] {SolarCellIV.csv};
\addplot table [x=v2,y=i2, col sep=comma,mark=none] {SolarCellIV.csv};
\addplot table [x=v3,y=i3, col sep=comma,mark=none] {SolarCellIV.csv};
\addplot table [x=v4,y=i4, col sep=comma,mark=none] {SolarCellIV.csv};
\node at (axis cs:12,360) {Set 1: 44.9 degreeCelsius};
\end{axis}
\end{tikzpicture}}

I want the symbol for Degree Celsius in place of the text. How do I do so?

Answer 1

Just use \textdegree{}C

Attention, you need to say \usepackage{textcomp} in your document's preamble.

Answer 2

Here are two other options:

$44.9^\circ$C
\SI{44.9}{\celsius} % \usepackage{siunitx}

I prefer the second one (if siunitx is used anyway).

Answer 3

Most is said already, but it's worth mentioning, that $^\circ$ and \textdegree{} yield different symbols:

So either

\usepackage{textcomp}
44.9 \textcelsius{}

or

\usepackage{siunitx}
\SI{44.9}{\celsius}

or if the exact typesetting is not important, this works as well:

$44.9\, ^\circ$C

If the curly brackets are omitted after \textdegree{} the space behind is ignored. \textdegree\ does the same job.

Answer 4

similar to @sergej, for using the siunitx package,

I use \SI{4.9}{\degreeCelsius}

or you can also use \usepackage{textcomp} and \textcelsius

Answer 5

I use the amsmath package and use it like this (replace 25 and C with whatever you need):

$25^\text{o}C

This is what it looks like:

25oC

I think it looks a lot like a real degree symbol, and it's fairly simple.