MapMaker FAQ (Frequently Asked Questions)

This FAQ covers some of the common problems and noted difficulties running MapMaker.

  1. Mars MDIM series of data sets (DTM, MDIM, Color, Merged Color, Shaded Relief)

    The mosaicing process for the lower resolution maps (16 pix/deg) left a few pixels off of the right hand edge (East) of each image. Since these tiles have been designed to have overlap, and since MapMaker lays tiles down from left to right, this artifact will not be seen in MOST maps. However, using a Mercator or Simple Cylindrical projection near the poles may cause this blank data to be written to the map. A noticeable dotted line, or zipper, along the tile boundaries may be seen. An alternate locator file that accesses the browse images from each CDROM is being created.

  2. CD-ROM Jukebox

    MapMaker can access data sets from a CD-ROM Jukebox with proper initialization of the associated ".des" file. MapMaker uses the path convention /DEVICE/CDROM/FILE (where /DEVICE is the absolute path to the Jukebox). If the Jukebox being accessed does not follow this convention, then changes must be made to either the ".des" file or the ".loc" file (see MAPMAKER APPLICATION DEVELOPMENT).

    Example: If the "mars" dataset path is


    then the mars.des file should have the following as the jukebox address


    and the mars.loc file should be edited so that


    replaces


    as the CDROM address.

    MapMaker has limited capability to issue mount and unmount commands to a Jukebox. Due to the variability of Jukebox mount commands,this feature is not comprehensive. If your Jukebox requires mount and unmount commands to access CD's, contact your system administrator to set up the appropriate script to fit MapMaker's architecture (see MAPMAKER VERSION 2.0 INSTALLATION AND CONFIGURATION MANUAL).

    Last modified November 1, 2000.