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My code is simply shown below:
\documentclass{article}
\usepackage[landscape]{geometry}
\usepackage{pstricks}
\begin{document}
\hspace{4in}
\begin{pspicture}(1in,1in)\pscircle(0,0){1}
\end{pspicture}
\end{document}
What does this mean? Different compilers sometimes have different behaviours on ...

Hi Stefan,
I beg your pardon for my posted screenshots so wide! They come directly from the opening post code by pushing on 'Open in WriteLatex' bar. That allowed me to better specify my thought, based on the use of \hspace command. Please, erase them if you believe they are disturbing so much ...

Please, look at what happens (Overleaf compiler) with spacer 6.5in: the cutoff of your circle. Any comparison should be carried out with the same compiler, mine is Overleaf,as said.

Hi.
Your drawback is caused by the horizontal space settled too high; by changing its figure into, i.e. 5.5 inches, the whole circle appears properly, as shown below. Cheers

Off Topic.
I've just posted (a couple of days ago) one contribution regarding this subject to TEXample.net, but my suspicion is that the platform has been closed since longtime, being last uploading dated July 2014, one year ago. Isn't? Cheers

Please, let me know if the enclosed example is satisfactory as first approach. TikZ environment is highly powerful, but too heavy to learn. The 2-row code has been adapted from the monumental guide of Till Tantau (the inventor of TikZ), p. 913 (over 1165): TikZ&PGF,version 3.0.0, 2013 edition ...

Fantastic drift , Alain!
Maybe you are minding why I'm so unskilled in TikZ statements, the reason is time of learning. Yes, just faced the magic world of \foreach command only a dozen of days ago.
Please, look at next application carried out today [two more utilizations of \foreach, dimensioning ...

Oh yes ... end of story !

% x-axis rotation [dx=1.5] - #3
\begin{scope}[xshift=5cm, yshift=1.5cm, rotate=90, scale=1]
\draw[dim] (0,0) -- ++(1.5,0) node[sloped,midway,below,rotate=90] {$1.5\,m$}; % col. dimension
\draw (1.5,-0.2) -- ++(0,0.4);
\draw (0,-0.2) -- ++(0,0.4);
\end{scope}

Hi Joannes,
what I'm running to investigate is "something of slim", and specifically the simple way (if exists, as I believe) to rotate strings ( not units, they could be litteral marks, l_1, d_1, etc.). That permits the LaTeX user to avoid big macros for solving easy drawbacks. Cheers.

It could be sometimes useful to create a unique macro which the LaTeX user may rotate the span leg with, along the embedded string, as per attachments. Thanks in advance

% --------- spanleg.tex --------- Apr.28,2015 ---------
%
\documentclass[10pt]{article}
\usepackage{tikz}
% ---
\usepackage ...