water lines should be merged

[sensescape]

• What did you see? Lots of tiny river segments at zoom 9
• What did you expect to see? Smooth rivers
• What map location are you having problems with? 9.0593/36.0268/-77.5754
• Screenshot?

[rmarianski]

After merging, we realized some gains:

Overall:

.water.features 18870 -> 13482
.water.properties.size 2862 -> 2302
.water.properties.values.count 349 -> 269

Kind breakdown:

.water.features.canal.count 83 -> 5
.water.features.canal.geom_cmds 827 -> 487
.water.features.canal.metadata 332 -> 21
.water.features.canal.properties 1178 -> 70
.water.features.river.count 283 -> 149
.water.features.river.geom_cmds 2690 -> 1641
.water.features.river.metadata 1132 -> 597
.water.features.river.names.count 282 -> 148
.water.features.river.properties 4420 -> 2497
.water.features.riverbank.geom_cmds 4937 -> 4902
.water.features.riverbank.properties 277 -> 270

[rmarianski]

Screenshots of the lines in the tile.

Before:

After:

[nvkelso]

See also:

• Remove point labels from water layer for lines Remove point labels from water layer for lines #1702

[nvkelso]

For Tangram testing, from #358:

color: |  #Style.color.randomColor()
                   function() {
                       var letters = '0123456789ABCDEF';
                       var color = '#';
                       for (var i = 0; i < 6; i++ ) {
                           color += letters[Math.floor(Math.random() * 16)];
                       }
                       return color;
                   }

[nvkelso]

This is working...

New:

Old: