Image you have a figure, but it just needs a bit of tweaking. Fear not! the following will do all the magic for you:
\usepackage
{graphicx}
...
\begin
{figure}[htbp]
\begin
{center}
\includegraphics
[trim=left bottom right top, clip]{file}
\caption
{default}
\label
{default}
\end
{center}
\end
{figure}
, where the default units of trim are big points (bp). For example:
trim=1200 400 1500 1500, clip]
I recommend you start small (say 100) and then go up from there, depending on the need.
Taken from here.
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