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VIEWS: 6 PAGES: 14

									   It’s a Wide World
Reflections on IS(S)OM from a
 non-European perspective

         Rob Plowright
    Description vs proscription
• Grammars and dictionaries
• Runnability example
• ISOM should reflect the practice of the
  best mappers rather than try to direct it
• The best mappers are reacting to the
  market
• Otherwise it quickly loses relevance
  eg:Speed limits
                 Scale
• Considerable debate over this issue
• 2000 ISOM allowed 10000 maps without
  150% enlargement for ‘special’ terrain
• In ISSOM 2000 10000 and 15000 maps
  are by definition identical
• Contrary to the obvious trend towards
  smaller areas and greater detail
          15000                                     10000
• Better suited for long legs         • In many terrains long legs
                                        are impossible
• Keeps map size reasonable           • In Japan large maps are very
                                        rare and not necessary
• tradition                           • Many countries have no
                                        such tradition.
                                      • Better suited to very steep or
                                        detailed terrain (ie Japan)
                                      • Perhaps 125% enlargement
                                        See Tashiro map


     Conclusion:
     I want to continue to see 15000 maps, but in some areas
     or countries 15000 is almost irrelevant. It is time to allow
     use of 10000 for long races in some circumstances
                 20% rule
• Before ISOM 2000
• Supposedly to cater for ink drawing
  variations.
• Still relevant given the variations in printing
• Useful for allowing better representation of
  a variety of terrains and features
• If used wisely the runner does not notice
• Can help improve legibilty
                 ISSOM
• Excellent work developing standards for
  urban terrain.
• Originally sprint seemed to be mostly
  parks and towns but recently more and
  more forest
• The urban symbols don’t work well in
  forest terrain
          Roads and paths
• Too hard to see.
• ISSOM has increased contours to .20 but
  left small paths the same
• Major paths very hard to see in
  steep/green terrain
• Unacceptable as it make the competition
  unfair.
               Solution?
• Already have a good map standard for
  forest: ISOM
• Already accept the principle of different
  symbols for urban/nonurban.
• So use ISOM symbols (enlarged) in forest
  terrain
             Other points
• Different shades/screens of brown for
  gravel asphalt etc??
• Encourage use of tags on walls in urban
  terrain to help with slope perception
                       Conclusions
I like the fact that orienteering takes place in diverse
    terrains AND cultures

I like the fact that there are different styles of mapping

That is why we have training camps and model events

I would like to see a little more flexibility in the
   application/enforcement of IS(S)OM and respect for
   different cultures

If IS(S)OM is a compromise then it makes sense to allow
   some compromises in its interpretation

								
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