The memoir class - The UK TeX Archive

D. PICTURESy30✻(-15,15)20 (20,20)10-20 -10 0 10 20 30 -10 (-15,-10)(10,-10)-20✲xFigure D.1: Some points in the cartesian coordinate system\setlength{\unitlength}{2mm}will make the value of \unitlength to be two millimeters.Figure D.1 shows the positions of some points and their coordinate values. Coordinatepairs are typed as a pair of numbers, separated by a comma, and enclosed in parentheses.\thinlines\thicklines\linethickness{〈len〉}In general, LaTeX can draw lines of only two thicknesses, thin and thick. The requiredthickness is specified via either a \thicklines or a \thinlines declaration, with thelatter being the default.There is another declaration, \linethickness, which can be used to change the thicknessof horizontal and vertical lines only. It sets the thickness of these lines to 〈len〉, but hasno effect on any sloping lines.A picture environment has a required size pair argument that specifies the width andheight of the picture, in terms of the value of \unitlength.\begin{picture}(〈width, height〉) 〈contents〉 \end{picture}\begin{picture}(〈width, height〉)(〈llx, lly〉) 〈contents〉 \end{picture}The environment creates a box of size 〈width〉 by 〈height〉, which will not be split acrosspages. The default position of the origin in this environment is at the lower left handcorner of the box. For example,\begin{picture}(80,160)creates a picture box of width 80 and height 160 whose lower left hand corner is at (0,0).There is also an optional coordinate pair argument (which comes after the required argument)that specifies the coordinates of the lower left hand corner of the box if you do notwant the default origin.410