Tikz images are always shifted to the right and xshift, yshift and shift do not work

Question

Hello I have been making a drawing with Tikz and would like to set the position of this Tikz image on the beginning of the page but it seems the tikzpicture is stuck some 3 cm from the top of the page and about 4 cm to the right and the xshift and yshift commands are not working, although the rotate, xscale and yscale commands are working, also the curve i wish to shift is constructed with the "hobby" Tikz library.

Here is my code :

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{hobby}

\begin{document}

\begin{tikzpicture}[scale =0.5,yscale=-1.1, xscale=1.2]

\draw [rotate=-12] (1.93,2.85) to [curve  through ={(4.09,2.77)..
(3.16,0.15)..(0.45,1.68)..(2.37,6.57)..(8.41,7.82)..(12.30,8.08)}]
(13.36,8.6) .. controls (14.45,8) and (15.50,7.8) .. (19.08,7.96) to
[curve  through ={(23.36,8.97)..(25.39,10.67)}] (25.22,12.77) 
.. controls (24.22,9.9) and (21.65,10.45)..(21.09,12.27) to [curve
through ={(23.46,15.72)..(27.28,12.86)..(25.40,8.13)..(21.72,6.40)..
(16.44,5.93)..(15.3,5.79)}] (14.49,5.31) .. controls (14.18,5.5) and 
(14,5.67)..(13.3,5.82) to [curve  through ={(12.4,5.92)..(8.55,5.89)..
(5.9,5.75)..(2.01,4.06)}] (1.93,2.85) ;


\end{tikzpicture}

\end{document}

Answer 1

This issue has been discussed here at length. I agree with Henri Menke that one does not have to rewrite TikZ to get a tight bounding box. You could use the answers of this question to rectify the issue. One additional possible way out here is to base the bounding box on the points the curve runs through.

\documentclass{article}
\usepackage[showframe]{geometry}
\usepackage{tikz}
\usetikzlibrary{hobby,decorations.markings}

\begin{document}
\noindent
\begin{tikzpicture}[scale =0.5,yscale=-1.1, xscale=1.2]
\begin{scope}[overlay]
\draw [rotate=-12,postaction={decorate,decoration={markings,
mark=between positions 0 and 1 step 0.005 with {\coordinate (x\pgfkeysvalueof{/pgf/decoration/mark info/sequence number});}}}] 
(1.93,2.85) to [curve  through ={(4.09,2.77)..
(3.16,0.15)..(0.45,1.68)..(2.37,6.57)..(8.41,7.82)..(12.30,8.08)}]
(13.36,8.6) .. controls (14.45,8) and (15.50,7.8) .. (19.08,7.96) to
[curve  through ={(23.36,8.97)..(25.39,10.67)}] (25.22,12.77) 
.. controls (24.22,9.9) and (21.65,10.45)..(21.09,12.27) to [curve
through ={(23.46,15.72)..(27.28,12.86)..(25.40,8.13)..(21.72,6.40)..
(16.44,5.93)..(15.3,5.79)}] (14.49,5.31) .. controls (14.18,5.5) and 
(14,5.67)..(13.3,5.82) to [curve  through ={(12.4,5.92)..(8.55,5.89)..
(5.9,5.75)..(2.01,4.06)}] (1.93,2.85) ;
\end{scope}
\path plot[variable=\i,samples at={1,...,200}] (x\i);
\end{tikzpicture}
\end{document}

This leaves you with the problem that the figure is too wide to fit. Note also that \noindent had a bigger impact than the above trickery to reduce the space on the left. Of course, you could rescale it to fit.