DDB2RAS

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]

Switches:

• -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 )