> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-mastermap-topography-layer/os-mastermap-topography-layer-standard-styling-specification/pattern-definitions.md). # Pattern definitions ## Creating a pattern The symbols defined in Symbols and Compound symbols that end with the term *FillSymbol* are all used for pattern fills. The name of the pattern is taken from the symbol name by replacing *FillSymbol* with the term *Pattern*. The exceptions to this principle are: * *scatteredBouldersPattern* uses *smallBoulderFillSymbol* * *scatteredRocksPattern* uses *smallRockFillSymbol* * *scatteredConiferousTreesPattern* uses *smallConiferousTreeFillSymbol* * *scatteredNonconiferousTreesPattern* uses *smallNonconiferousTreeFillSymbol* To produce a particular pattern, the appropriate fill symbol is distributed on a grid that is repeated to cover the polygon being drawn. The sections below detail the grids that are currently in use. ### Landform grid ### Landform grid table | Variables | Value/s | | ------------------ | -------------------------------------------------------------------------- | | Size | (25,25) | | Suitable symbols |

manmadeLandformFillSymbol

naturalLandformFillSymbol

| | Symbol coordinates | 0,-21 0,-18 0,-15 0,-12 0,-9 0,-6 0,-3 0,0 0,3 0,6 0,9 0,12 0,15 0,18 0,21 | | Fill colour | none | | Patterns |

manmadeLandformPattern
naturalLandformPattern

| ### Small regular grid #### Small regular grid table. | Variables | Value/s | | ---------------- | ------------------------------------------------------------------------------------------------ | | Size | (3,3) | | Suitable symbols |

foreshoreFillSymbol

multiVegetationFillSymbol

| | Fill colour |

for foreshorePattern – CCFFF (RGB 204,255,255)

otherwise – CCFFCC (RGB 204,255,204)

| | Patterns |

foreshorePattern

multiVegetationPattern

| ### Regular grid #### Regular grid table. | Size | (6,6) | | ---------------- | ------------------------ | | Suitable symbols | orchardFillSymbol | | Fill colour | CCFFCC (RGB 204,255,204) | | Patterns | orchardPattern | ### Natural environment grid #### Natural environment grid table. | Property/Description | Value/s | | -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | Size | (50,50) | | Suitable symbols | All natural vegetation and surface cover symbol types except for orchard. | | Symbol coordinates | 5,3 5,25 10,12 10,35 25,45 42,15 37,27 27,14 36,37 42,45 39,3 18,33 | | Fill colour | CCFFCC (RGB 204,255,204) | | Patterns |

roughGrassPattern
heathPattern
marshPattern
scatteredBouldersPattern
scatteredRocksPattern
scatteredConiferousTreesPattern
scatteredNonconiferousTreesPattern
coppicePattern
orchardPattern
bouldersPattern
rocksPattern
screePattern
scrubPattern
coniferousTreesPattern
nonconiferousTreesPattern
coniferousTreesAndScatteredRocksPattern
coniferousTreesAndScrubPattern
heathAndScrubPattern
heathAndScatteredRocksPattern
nonconiferousTreesAndConiferousTreesPattern
nonconiferousTreesAndCoppicePattern
nonconiferousTreesAndScatteredRocksPattern
nonconiferousTreesAndScrubPattern
roughGrassAndBouldersPattern
roughGrassAndConiferousTreesPattern
roughGrassAndHeathPattern
roughGrassAndMarshPattern
roughGrassAndNonconiferousTreesPattern
roughGrassAndRocksPattern
roughGrassAndScatteredBouldersPattern
roughGrassAndScatteredNonconiferousTreesPattern
roughGrassAndScatteredRocksPattern
roughGrassAndScrubPattern
scatteredNonconiferousTreesAndScatteredConiferousTreesPattern
scrubAndScatteredNonconiferousTreesPattern
rocksRoughGrassAndBouldersPattern
roughGrassNonconiferousTreesAndConiferousTreesPattern
roughGrassNonconiferousTreesAndScrubPattern
roughGrassScatteredRocksAndBouldersPattern
roughGrassScatteredRocksAndHeathPattern
roughGrassScatteredRocksAndScatteredBouldersPattern
roughGrassScatteredNonconiferousTreesAndScrubPattern
scrubConiferousTreesAndNonconiferousTreesPattern
scrubNonconiferousTreesAndCoppicePattern
scatteredConiferousTreesScatteredNonconiferousTreesAndScrubPattern

| ### Example grid pattern In this example, *heathAndScrubPattern* uses the natural environment grid to produce the pattern below:
Example visual representation of heathAndScrubPattern using the natural environment grid.

Example heathAndScrubPattern using the natural environment grid.

This is then applied as a polygon fill:
Example heathAndScrubPattern using the natural environment grid applied as a polygon fill.

Example heathAndScrubPattern using the natural environment grid applied as a polygon fill.

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