Mgrav

Mgrav.e takes a bigmap and generates four (4) ppm images depicting: elevation, acceleration, potential and slope. The images are RGB and are unscaled.

Input - files

• bigmap - The is a bigmap that is maintained in MAPFILES/<whatever>.MAP

Required files

These are important to consider because they can cause conflicts if you run more than one instance of the program.

• MGRAV.IN - gets GM and omega

• SGRAV.IN - ????? gets Q, K, I, J, F

• SGRAV.TXT - Output from the gravity generation from the shape model

Working files (generated)

• view.gray - Temporary file that is used to write data before final images are generated

• sml.imh - Temporary file that is used to write data before final images are generated

Input - stdin

• What it asks for

  Name of map file
  ZN0026

• Another argument

Output

• MGRAV.TXT

• Original bigmap viewed in shaded relief

  • Generates Mslp.ppm

  • Generates Mpot.ppm

  • Generates Melv.ppm

  • Generates Macc.ppm