Adding pattern for natural=sand

[kocio-pl]

Irregular wave pattern for natural=sand would make it visibly different from farmland (and also from beach). Initial pattern shape and color are just proof of concept.

Egypt
z10

z13

[matthijsmelissen]

To me the wave patten symbolizes water, I wouldn't be in favour.

[kocio-pl]

Any other ideas how could sand waves/dunes look like?

I have more general ideas to tinker with:

1. Maybe natural sand should use a random pattern we use for beach now and beach could use regular one instead.
2. Maybe both should look the same (including pattern or not).
3. Maybe farmland should have some (regular) pattern.

There's not too many places where both landuses are next to each other, but they do exist:

• http://www.openstreetmap.org/#map=11/31.1834/34.4596
• http://www.openstreetmap.org/way/25872956#map=13/26.0187/12.9679
• http://www.openstreetmap.org/#map=19/50.36077/19.51951

[matthijsmelissen]

Commenting for administration's sake only: wave pattern does not work for me.

[kocio-pl]

What about this pattern:

https://github.com/osmandapp/OsmAnd-resources/blob/master/icons/svg/shaders/h_sand_shader.svg

[kocio-pl]

It would look like this (OsmAnd has more restrictive licence, so we could ask for relicencing or just create something similar):

[dieterdreist]

sent from a phone

On 4. Sep 2017, at 03:44, kocio-pl ***@***.***> wrote: What about this pattern: https://github.com/osmandapp/OsmAnd-resources/blob/master/icons/svg/shaders/h_sand_shader.svg

it's not completely bad, but a bit "heavy"/impactful. Could it become lighter somehow?

[kocio-pl]

I guess the easiest and the most coherent way would be to just use the same pattern as sandy beach. General beach and farmland would be plain, sandy beach and natural=sand would be covered with sand pattern then, so we have the system and we can recognize all of them. The only problem I see is if current sand pattern is not too light in general - it's hard to spot the dots for me:

natural=sand at z19:
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natural=sand and landuse=farmland at z19:
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natural=sand and landuse=farmland in Israel (midzoom - click to see the full size):
z9
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z10
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z11
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z12
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Libya - landuse=farmland inside natural=sand

z11
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z12
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z13
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[kocio-pl]

Any comments or reviews? I think sand pattern may be improved later (like bigger or less grains), because it would also change how sandy beach looks like.

[Tomasz-W]

I like new rendering of sand areas, but why this change hasn't included beach areas too? Is it intentional?

[kocio-pl]

Yes, default beach has no overlay pattern, because the pattern depends on beach/shoal surface:

openstreetmap-carto/landcover.mss

Lines 668 to 684 in 72f6c8d

	[natural = 'beach'],
	[natural = 'shoal'] {
	[surface = 'sand'] {
	polygon-pattern-file: url('symbols/beach.png');
	polygon-pattern-alignment: global;
	}
	[surface = 'gravel'],
	[surface = 'fine_gravel'],
	[surface = 'pebbles'],
	[surface = 'pebblestone'],
	[surface = 'shingle'],
	[surface = 'stones'],
	[surface = 'shells'] {
	polygon-pattern-file: url('symbols/beach_coarse.png');
	polygon-pattern-alignment: global;
	}
	}