For example, if both your X server and your translator will run on the same local machine then type:Ĭheck with your system administrator if you are not sure. If you are an X user, you will also need to set the DISPLAY environment variable. The device_name may also be specified on the command line for the translators, thus overriding the environment variable. cshrc file so that it will always be available. You may want to set this variable in your. The general form for setting your graphcap is:Īs an example, if you are running under X11 you would use: To determine which devices are supported, you can type: When using NCAR Graphics metafile translators you must either set the GRAPHCAP environment variable to reflect the graphics device you are using, or provide the device name as a command line argument. Please see the first step in the "Five quick steps for creating and viewing your graphic" chapter for information on setting critical NCAR Graphics environment variables. You must also make sure that the appropriate NCAR Graphics environment variables are set. You must make sure that the NCAR Graphics executables and the current working directory, ".", are on your search path. To determine which variables are already set, type: Your site administrator may have already preconfigured your environment for you. Many of the environment variables are invariant from one session to the next, so you may want to place them in your. This section discusses the environment variables that must be set. If you are not sure what shell you are using, check with your system administrator. If you are using ksh, the Korn shell, or sh, the Bourne shell, you may want to get help from your system administrator. The examples in this chapter assume that you are using csh, the C shell. For X11 references, see X Window System User's Guide, by O'Reilly and Associates, Inc., or contact your system administrator. This chapter assumes that you have a working knowledge of the X11 windowing system environment for discussions involving GUIs. Interfaces are typically equivalent in function to GUIs but only require a GUIs are supported by and require the X11 Window System. rasview- a raster file previewer for the X11 window system.med- a text-based, frame-level interactive NCGM editor.idt- a graphical user interface (GUI) to ctrans.
Finally, a limited set of tools for working with raster imagery is discussed at the end of the chapter. Many of the applications described in this chapter may also ingest valid ANSI-standard Computer Graphics Metafiles (CGMs), provided they are transformed into NCGM format using the tools discussed later in this chapter. This chapter describes a suite of applications that may be used to display and manipulate NCGMs. The primary token of exchange for graphical imagery in NCAR Graphics is the NCGM, which can be produced directly from NCAR Graphics plotting utilities. Chapter 4: Viewing and editing your CGMs and raster images Chapter 4: Viewing and editing your CGMs and raster images Previous chapter LLUs Home Next chapter Index Introduction
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