Changes in Specification

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      revision 05/00

Changes from ISOM1990 (last) to ISOM2000 (current)

Index

Changes by: -

• Colour
• Combinations
• Deleted sections
• Deleted symbols
• Importance
• Layout
• Line size
• New symbols
• Symbol name changes
• Number
• Runnability
• Screen changes
• Symbol dimensions

This page and the links are in production as you read this, please be patient, ta.

Colour changes

CMYK: -

• Composite colour separations have now been explicitly defined: -

• Colour		Cyan	Magenta	Yellow	Black
  Black	Process black				100%
  Brown	PMS 471		56%	100%	18%
  Yellow	PMS 136		27%	79%
  Blue	PMS 299	87%	18%
  Green	PMS 361	76%		91%
  Grey	PMS 428				23%
  Violet	Purple		100%

• There is also a further advice paper on four colour printing
• Four colour separations are also needed for the correct setting up of composite or local printing.

Green: -

• Two new tones introduced:-
  • Green 60% used by symbol 408 (Forest: difficult to run) (was 50%)
  • Green 30% colour used by symbol 406 (Forest: slow running) (was 20%)
  • Yellow 100%/Green 50% used by symbol 527 (Settlement) and remains at 50% for green.

Yellow: -

• Alternative Pantone colours PMS122 & PMS129 have been removed. The standard yellow is now PMS136.
• New tone added at 70% for symbol 404 (Rough open land with scattered trees)
• A further new tone of 75% is permissible if yellow coloured areas become dominant (401, 402, 412, 413, but not 415?)

Grey: -

• Alternative Pantone colour PMS427 removed, the standard grey is PMS428

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Combinations

ISOM2000 increased the combinations allowed to 116, 210, 309, 310, 401, 402, 403, & 404 by allowing broken ground 116, uncrossable marsh 309 and open land 401 to be combined with some other symbols. For a table showing all allowed combinations click on this link, for a view of the 1990 go to the 1990 combo page.

Deleted or amended sections

• New Sections: -

  • Map Committee on inside cover of printed ISOM
  • Section 3.5 Printing is mostly new, the old section 3.3 was three paragraphs and a PMS colour table only
  • Section 4.6 technical symbols to include: -
    • 601 Magnetic north line,
    • 602 Registration marks,
    • 603 Spot height (previously 118).
  • Section 5 Ski orienteering
  • Section 6 Mountain bike orienteering
  • Section 7 Trail-O
  • Section 8 Park-O

   

• Moved Sections: -

  • Section 3.2 Contour Interval (was in 3.1 - Scale and vertical interval)
  • Section 3.3 Dimensions of map symbols (was 3.2)
  • Section 3.4 Enlargement of maps is a part of the old section 3.4 (Larger scale maps) parts of which are now in 3.1
  • Section 4.7 Overprinting symbols (was ISOM 1990 4.6)

• Deleted sections: -

  • 1990 Section 3.4.2 (Special terrain) has been removed

Deleted symbols

Two of the symbols defined in ISOM1990 are a combination of other symbols. A specific definition of these symbols is thus not required, both are deleted:

• 515 Wide ride,
• 532 Sports track.

The new categories replace some symbols with new versions see: -

• Ski-O
• MBO
• Trail-O
• Park-O

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Importance

• By appearance

• Colour changes
• The maps will appear greener, as the green tones have been increased
• Open area maps may use a 75% yellow screen (no mention of a corresponding reduction in the 50% tone)
• marshes have a finer fill pattern, they will stand out more and represent shapes better
• Lakes and rivers now all at 50% blue
• Street infill now at 50% brown rather than 50-100%
• The two "semi-open" symbols 402 & 404 have been precisely specified, this combined with the single yellow colour may make some of them visible!

• In survey?

  • 1:10000 maps with 1:15000 size symbols not allowed, so all surveys the same
  • Marsh edges can be better drawn so can be accurately surveyed
  • Also slightly applies to undergrowth screen 407

 

• In cartography

  • Multiple changes to symbols, particularly line sizes
  • Colours altered, no alternatives allowed and new tones added

   

• In printing

  • 4-colour and other printing methods allowed
  • Finer line tone for percentage colours
  • Tolerance pulled in

   

Layout changes

(to be coded)

pdf's now available

web versions (point to)

Additional info at

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Changes in line sizes

• 0.1mm line introduced (310, 311, 602, 862)
• 0.12mm line introduced (201, 203, 407, 409, 414, 527, 529)
• The standard thin line size of 0.125mm has been broadened to 0.14mm (101, 103, 104, 106, 107, 108, 111, 114, 306, 307, 509, 516, 517, 519, 520, 522, 523, 533, 601
• 0.16mm line introduced (204, 205, 530, 532, 535, 536, 537, 538, 539, 540)
• The standard medium line size of 0.175 has been slightly changed to 0.18mm (106, 115, 116, 118, 203, 301, 303, 304, 309, 312, 313, 314, 501, 502, 503, 507, 508, 518, 521, 524, 525, 534, 601, 806, 831, 861)
• 0.2mm line introduced (413)
• 0.5mm line introduced, all for Ski-O (801, 802, 804, 805)
• 0.6mm line introduced, all for MBO (811, 813, 815)

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Name changes

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New symbols

• 113 Elongated knoll A small obvious elongated knoll which cannot be drawn to scale with a contour line (length less than 12 m and width less than 4 m). The height of the knoll should be a minimum of 1 m from the surrounding ground. Knolls larger than this must be shown by contours. The symbol may not be drawn freehand or such that two elongated knoll symbols overlap. The symbol may not touch a contour line.
• 420 Special vegetation features (green point) Symbol 420 can be used for special small vegetation features. The definition of the symbol must be given in the map legend.
• 501, 502, 503, - Roads can be broken to designate under construction
• 501, 502, 503, - Roads can now have 519 stone wall, 521 high stone wall, 522 fence, or 524 high fence in place of the edge line
• New categories introduce extra symbols: -
  • Ski-O
    • 801 Track >2m
    • 802 Track 1-2m
    • 803 Track 0.8-1m
    • 804 Road covered with snow
    • 805 Sanded or snowless road
    • 806 Prepared areas
  • MBO
    • 811 Track: easy riding
    • 812 Path: easy riding
    • 813 Track: slow riding
    • 814 Path: slow riding
    • 815 Track: difficult to ride
    • 816 Path: difficult to ride
  • Trail-O
    • Many symbols in the main section have been redefined, click for details
    • 831 Passable step
    • 832 Impassable step
  • Park-O
    • 851 Building
    • 852 Building pass-through
    • 853 Building outline
    • 861 Road without car traffic
    • 862 Stairways

   

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Number changes

The following are the symbol number changes from ISOM1990: -

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Runnability

Many of the suggestions received were to do with the definition and representation of runnability. There was particular criticism of the representation of undergrowth and the classification of runnability. In addition, a new symbol for "vegetation barrier" was requested.

Unfortunately, no better alternatives were proposed for symbols 407 and 409 (undergrowth: slow running and difficult to run) so they were not changed. A new signature for vegetation barrier was not introduced. Instead, the definitions of the existing symbols were changed, as follows:

• 406: Forest: slow running, 407: Undergrowth: slow running
  The ratio for the reduced running speed was changed from 50 - 80% to 60 - 80%.
• 408: Forest: difficult to run, 409: Undergrowth: difficult to run
  The ratio for the reduced running speed was changed from 10 - 50% to 20 - 60%.
• 410: Vegetation: very difficult to run, impassable
  The ratio for the reduced running speed was changed from 0 - 10% to 0 - 20%.

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Symbol dimension changes

In areas with large granite rocks and boulders it was thought necessary to permit the enlargement of the standard symbols so as to represent significant differences in the sizes of individual rocks and boulders in boulder fields. In these special cases the following enlargements are permitted in addition to the normal symbols:

• 206: boulder (+20%)
• 208: boulder field (+20%)
• 209: boulder cluster (+25%)

Screen changes

The following screens were newly defined: -

• 310: Marsh, 311: Indistinct marsh
  The line widths were changed from 0.125mm to 0.1mm and the distance between the lines reduced from 0.25mm to 0.2mm. Small marshes and the shape of larger marshes can thus be better represented.
• 402: Open land with scattered trees
  The screen specifications in ISOM 1990 were contradictory. Instead of 50% of the area the yellow part was only about 35%. By fixing 50 lines/cm and a point size of 0.4mm the desired yellow part of 50% is reached. The area on the map must be at least 10mm² large.
• 404: Rough open land with scattered trees
  The screen specification in the ISOM 1990 definition could only be recognised with difficulty. The legibility is increased by increasing the yellow part from 50% to 70% and increasing the white dots from 0.4mm to 0.55mm. The area on the map must be at least 16mm² large.
• 406: Forest: slow running, 408: Forest: difficult to run
  To improve legibility the green screen is increased from 20% to 30% and from 50% to 60%.

All percentage tone screens are now defined at 60 lines/cm (was 40 l/cm)

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International Specification for Orienteering Maps produced by the International Orienteering Federation
OCAD produced by Hans Steinegger Software. © 1988-1999 Hans Steinegger. ® OCAD is a registered trademark of Hans Steinegger
This document has been written and coded by Peter Hornsby of Ashby Mapping
Apologies for any mistakes and errors; please inform details of any problems, thanks.
Produced for the Ashby Mapping internet site on 20 November 1997 and 1 December 1999  ©1997-2000 Ashby Mapping
Revised 28 December 1999, 23 March 2000

and 28 May 2000, 15 October 2000