[Tex/LaTex] Table placement using sidewaystable or landscape

Question

I can use either {sidewaystable} or {landscape} to produce a table and its caption that are landscape on a page. However, it is centered on the page. How do you move it so that it aligns with the left margin of the page?

\begin{landscape}
\begin{table}[]
\caption{Insert table caption here}
\resizebox{\textwidth}{!}{%
\begin{tabular}{llllllllllllll} 
**removed table data for posting**
\end{tabular}%
 }
\end{table}
\end{landscape}       

Gives

Which is centered on the page. I would like the caption and the table to be aligned to the left margin of my document.

If I use {sidewaystable} instead and add the first line of code:

\setlength\rotFPtop{152pt}
\begin{sidewaystable}
\begin{table}[]
\caption{Insert table caption here}
\resizebox{\textwidth}{!}{%
\begin{tabular}{llllllllllllll} 
**removed table data for posting**
\end{tabular}%
 }
\end{sidewaystable}

Then it will shift everything to the left as desired. But I guessed 152pt. Is there a way to determine the exact pts of the page margin?

Answer 1

There is an automatic \clearpage at the beginning and end of landscape, so using a float (table) is fine. If you want to position the contents, you can use a minipage INSIDE the float to fit the entire text area.

For some reason, showframe is acting up for me.

\documentclass{article}
\usepackage{pdflscape}
\begin{document}
\begin{landscape}
  \begin{table}[p]
    \begin{minipage}[t][\textheight][t]{\linewidth}% use entire text area
      \caption{Insert table caption here}
      \resizebox{\textwidth}{!}{%
        \begin{tabular}{lllll lllll llll}
          \multicolumn{14}{c}{**removed table data for posting**}
        \end{tabular}%
      }%
    \end{minipage}
  \end{table}
\end{landscape}
\end{document}