# Smart Maps report
## 2025-02-12
## DWG-7 UN Smart Maps Group
{%hackmd WdEeg3SdQ-OHU9QFfiW1hg %}
---
# Generative AI
# Portable Web
- Basemap Vector Tile Style w/ Apple Pkl
---
## Basemap Vector Tile Style
---
## Basemap Vector Tile Style
- M lines for a layer. N layers.
- M ~ 25
- N ~ 40
- Traditional approach: M x N ~ 10000 lines
---
## Apple Pkl for Vector Tile Style
- Pkl /pickle/: an embeddable configuration language which provides rich support for **data templating** and validation.
- M lines for **layer templates**, N lines for layers.
- (M + N = 65 lines) << (M x N = 10000 lines)!
---
## Pkl layer template
```
open class Layer {
source: String? id: String? `source-layer`: String? = id type: String?
maxzoom: Int? minzoom: Int? paint {} layout {}
}
class Line extends Layer {
source: "a" type = "line" hidden c = "#f0f"
hidden z = new Listing { 10 0.2 18 1 }
paint {
`line-width` = new Listing { "interpolate"
new Listing { "linear" } new Listing { "zoom" }
z[0] z[1] z[2] z[3]
}
`line-color` = c
}
}
```
---
## Pkl layer definition
```
new Line { id = "Alur" c = "#649678" }
new Line { id = "Gorong_Gorong" c = "#4682B4"
paint { `line-dasharray` = new Listing { 4 2 } } }
new Line { id = "Danau" c = "#008080" }
new Line { id = "Bendungan" c = "#add8e6" }
new Line { id = "Jembatan" c = "#808080" z = new Listing { 13 1 17 4 } }
new Line { id = "Jalur Sutet" c = "#ff0000" }
new Line { id = "Pagar" c = "#008000" z = new Listing { 13 0.4 17 2 } }
```
---
## Much more productive
---
## Keep web maps open for a better world.
## Test new technologies for future geospatial applications.
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