The Choice of Graphics Device

If you want to combine the results of several applications into a single plot, you need to specify an encapsulated PostScript device. These differ from normal PostScript files in that they contain information which allows them to be included within other PostScript files. The GDNAMES command displays a list of all the available graphics devices, together with a brief description of each. This should enable you to select an appropriate device name.¹⁵ There may be various encapsulated PostScript devices available. For instance, you can choose between colour or monochrome devices, and between portrait or landscape devices. The choice of colour or monochrome obviously depends on the printer you will use. The choice of landscape or portrait depends on the shape of the total plot you are producing--for tall narrow plots choose portrait, for short wide plots choose landscape.¹⁶

For instance, if you want all applications to write graphical output to monochrome landscape encapsulated PostScript files set the graphics device as follows:

   % gdset epsf_l