Program Description:

Allows the user to convert a Jumpstart Collection Dynamic DataBase (DDB) complex stripmap image to 8-bit Sunraster format.

Program Usage:

js_ddb2ras -i <infile> -o <outfile> -h -t [0-7]


  • -h = Dump Phoenix (ASCII) header (Def: none)
  • -e = Auto-contrast enhance output data (Def: none)
  • -t[0-7] = Convert specific tile of data (ONLY for images whose height >= 1024)

Description of Arguments:

  • <infile> : Input (complex) Jumpstart DDB stripmap image filename
  • <outfile> : Output Sunraster image filename
  • -h : Optional Phoenix header dump switch
  • -e : Auto-enhance output switch
  • -t[0-7] : Optional single tile conversion switch

Files Necessary to Compile:

  • Include : rasterfile.h (Contains Sunraster file defs.)
  • Source : js_ddb2ras.c read_switch.c
  • Make : js_ddb2ras.mk (optional)

Compiling and Linking Code:

  • You can compile js_ddb2ras either from the command line or by using the included makefile (note: .mk file).
  • a) Command line Method:
    • % gcc -c read_switch.c
    • % gcc -o js_ddb2ras js_ddb2ras.c read_switch.o -lm

NOTE: You can use other C compilers. Edit .mk file as necessary.

  • b) Using the Makefile [js_ddb2ras.mk]:

Perform the following steps:

    1. % make -f js_ddb2ras.mk
      (Creates executable: js_ddb2ras)
    2. % make -f js_ddb2ras.mk clean
      (Deletes object code )