See Also...401 404 ISOM Index Vegetation index previous next
revision 05/00
402 Open land with scattered trees
Meadows with scattered trees or bushes, with grass or similar ground cover offering easy running. Areas smaller than 10mm² at the map’s scale are shown as open land (401). Individual trees may be added (418, 419, 420). If yellow coloured areas becomes dominant, a screen (75%) instead of full yellow may be used.
Colour: yellow 50% (20 lines/cm).
Dot diameter 0.4mm, diagonal spacing 0.5mm
note: this symbol used the full yellow (100%), and the 50% tone is achieved by a white knockout.
Although the specification does not state the orientation, it is generally accepted that this symbol is oriented with the yellow dots aligned at 45º.
Meadows with scattered trees or bushes, with grass or similar ground cover offering easy running. Very small areas are shown as open land (401).
Defined as area symbol 402.0, and can be drawn with any drawing tool.
Care is needed at joins, overlap only where it is safe (usually if it is the same colour and always if it is the same symbol). If you need to share a common boundary with another symbol, draw along the edge with the control key to follow it exactly.
This is a rotatable symbol, the pattern of the fill can be rotated with the direction tool and will rotate with the map if the “include symbols” box is checked when the map is turned. This is not the same as using the rotation tool which turns the whole object, but not the fill pattern.
See minimum dimensions but specifically -
- Smallest area enclosed by a dotted line: 1.5mm (diameter) with 5 dots.
- Smallest area of colour yellow dot screen: 1.0mm².
This symbol is typically used as a buffer between a wooded area and an open area. It is very unlikely to be edged with the distinct vegetation boundary symbol.
The runnability should be good, or the rough open land with scattered trees symbol should be used.
The ISOM lays down the permissible combination of screens.
Open land with scattered trees is allowed with stony ground, and indistinct marsh. Now broken ground, uncrossable marsh, and marsh have been added.
The following are specifically excluded: - open land , open land with scattered trees, rough open land, rough open land with scattered trees, forest: slow running, undergrowth: slow running, forest: difficult to run , undergrowth: difficult to run, or vegetation: very difficult to run.
For more on what may be allowed, see the open land topic which now has the same allowable combinations or the combination topic.
Semi-open land: an area of scattered trees.
There is a problem with the joining of these areas. Where a large area is made out of two or more overlapping areas, one area knocks out the underlying edge. This appears a clean join on the screen but the filled area covers the dots at the join on the output.
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