https://github.com/iwpnd/gittr
create a square grid from an input geojson feature
https://github.com/iwpnd/gittr
geometry geospatial geospatial-processing
Last synced: 2 months ago
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create a square grid from an input geojson feature
- Host: GitHub
- URL: https://github.com/iwpnd/gittr
- Owner: iwpnd
- License: mit
- Created: 2022-02-05T13:26:34.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2022-10-24T05:41:17.000Z (almost 3 years ago)
- Last Synced: 2025-07-21T16:21:24.970Z (3 months ago)
- Topics: geometry, geospatial, geospatial-processing
- Language: Go
- Homepage:
- Size: 50.8 KB
- Stars: 2
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: readme.md
- License: LICENSE
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README
# gittr
Gittr (from Gitter /ˈɡɪtɐ/, the german word for grid) cuts an input polygon into equal sized grid cells. Grid cells are only created
if they either touch or are within the input polygon. It also accounts for polygon holes.
## Installation
```
go get -u github.com/iwpnd/gittr
```
## Usage
```go
package main
import (
"encoding/json"
"fmt"
"github.com/iwpnd/gittr"
)
func main() {
raw := []byte(`{
"type": "Feature",
"properties": {"id": 3},
"geometry": {
"type": "Polygon",
"coordinates": [
[
[13.398424, 52.481369],
[13.395336, 52.480271],
[13.391905, 52.478598],
[13.390017, 52.478076],
[13.3871, 52.477971],
[13.386929, 52.471384],
[13.389503, 52.470338],
[13.392076, 52.46924],
[13.397395, 52.466626],
[13.402971, 52.465527],
[13.40992, 52.465789],
[13.417384, 52.469867],
[13.420558, 52.470338],
[13.419185, 52.473946],
[13.418499, 52.477501],
[13.418756, 52.479592],
[13.413781, 52.48048],
[13.406489, 52.482153],
[13.401856, 52.482728],
[13.398424, 52.481369]
],
[
[13.391561, 52.475096],
[13.414552, 52.476194],
[13.415324, 52.47107],
[13.391647, 52.470756],
[13.391561, 52.475096]
]
]
}
}`)
var f gittr.Feature
err := json.Unmarshal(raw, &f)
if err != nil {
panic("something went wrong")
}
// create grid with a cell size of 100m
grid, err := f.ToGrid(100)
if err != nil {
panic(err)
}
fmt.Printf("cell count: %v\n", len(grid.Features))
}
```
## License
MIT
## Maintainer
Benjamin Ramser - [@iwpnd](https://github.com/iwpnd)
Project Link: [https://github.com/iwpnd/gittr](https://github.com/iwpnd/gittr)
## Acknowledgement
Paul Mach - [go.geojson](https://github.com/paulmach/go.geojson)