The Plots and Screen Dumps subsystem allows the creation of on screen plots and hard copies of a buffer through the creation of a PostScript file describing the buffer.
This option provides a fully interactive method of plotting data and adding text to an image in a buffer. An option also exists for taking plotting commands from a file using a special format.
This option creates a PostScript description of the selected screen buffer and writes it to a file for subsequent tranmission to a PostScript printer (through some suitable communication program such as Kermit).
This clears the contents of a specified buffer. The action is identical to [;GE Erase buffer] in the Grab/Display submenu.
This option enables the intensity range of a buffer to be rescaled in such a way as to make to most use of the available gray scale when producing screen dumps. The rescaling is based on a user specified window, but is applied to the entire screen. A saturation factor is specified by the user to indicate if loss of detail at the extremes is acceptable (this will enable a better use of the available contrast).
This option creates a file suitable for printing on a PaintJet colour ink jet printer. The file must subsequently be printed using the PrintJet or similar utility. Note that the standard MS-DOS PRINT command is not suitable as it strips out some character sequences which corrupts the file.
This option is included partly for its novelty value. The purpose behind dithering is to give the appearance of a continuous gradation of intensity and/or colour when only a limited range of intensities/colours are infact available. This option reduces a full coloured image to one containing only red, green, blue, black and white. Clearly this results in a reduction in the image quality and resolution.