CEOS CDROM BUILD

1
CEOS CDROM BUILD

• Step 1
• Insert into Development Environment
• CNES contributions
• from CNES web sites
• Agencies contributions
• from agencies web sites, CDROMs, cartridges, FTP,
  mail
• Previous CDROM
• Feedback from agencies
• Data extracted from their sources, decompressed,
  catalogued, sorted

2
CEOS CDROM BUILD

• Step 2
• Packaging
• make minor changes, e.g. CDROM 97 become CDROM 98
• organize files in folders as appropriate
• make new contributions fit the CDROM design
  specifications in order to get a beta CDROM
  version

3
CEOS CDROM BUILD

• CDROM Design Specifications
• CDROM shall be an anthology to be used by many
  different people
• same look and feel everywhere on the CD
• shortening of long file names
• solving of lower/upper case problem (UNIX/PC)
• only relative paths to files
• a page shall never require more than some
  specific amount of memory (50 KB)

4
CEOS CDROM BUILD

• CDROM specifications (continued)
• pages shall be readable like pages of a book by
  means of a fast, simple and intuitive navigation
  scheme
• no audio or video add-on allowed
• only standard HTML (2.0) - no Java
• bilingual English/French contributions accepted
• standalone browser included on CDROM
• compatibility with Netscape and IE browsers

5
CEOS CDROM BUILD

• Step 3
• Tests and validation after packaging
• manually by checking correctness of each
  hyperlink and image
• by software detection of broken links and orphan
  files
• Step 4
• Validated files are moved to the web site through
  an enhanced FTP (files selected on time criteria)
• Validated files are accessible from outside CNES
  to allow feedback

6
CEOS CDROM BUILD

• Step 5
• Final testing of the web mirror site
• Visual verification that all pages are correctly
  displayed by Netscape and IE browsers
• Contributor feedback taken in account
• Step 6
• CDROM production
• limited CDROM production and submission to laymen
  for ultimate tests
• mass production

7
CEOS CDROM BUILD

• Constraints on CDROM build
• each contribution to be carefully analyzed
• contributor name appears only once
• removal of information like new, last
  update,
• aesthetic uniformity
• mosaic background texture only used for CDROM
  presentation pages
• neutral white background elsewhere
• same color and police for all contributions
• all underlined words or phrases are hyperlinks

8
CEOS CDROM BUILD

• Constraints on CDROM build (continued)
• all file names changed to lower case
• absolute paths (e.g. Q\cdrom98\\file.htm)
  turned into relative paths for the sake of
  portability
• page size limited to 50 KB (less than 5 times
  height of screen) to save loading time
• make use of thumbnail feature
• JPG to GIF conversions
• combination of small pages to get a single 50 KB
  page and empty places around images filled with
  text
• page display adjustable to actual screen size
• no use of frames

9
CEOS CDROM BUILD

• Navigation Scheme
• navigation goes up and down along the branches of
  a tree, horizontal navigation allowed only at
  leaf level
• six kinds of links
• links to home page
• up and down links within a single page
• up and down links linking different pages
• links from one leaf to another leaf
• links used for zooming on a particuliar topic
  within a page
• site map provided

10
CEOS CDROM BUILD

• The way ahead
• skip 1999 edition
• make major release in 2000, for the new millenium
• expect many contributions from agencies
• same CDROM build framework suggested
• implement research engine in the CDROM
• need an editorial committee
• need agencies to copy and distribute CDROMs in
  their geographic area
• release advertising pamphlet in 1999