mirror of
https://github.com/Luzifer/staticmap.git
synced 2024-10-18 23:54:21 +00:00
58 lines
2.2 KiB
Markdown
58 lines
2.2 KiB
Markdown
|
[](https://godoc.org/github.com/flopp/go-coordsparser)
|
||
|
|
[](https://travis-ci.org/flopp/go-coordsparser)
|
||
|
|
[](https://goreportcard.com/report/flopp/go-coordsparser)
|
||
|
|
[](https://github.com/flopp/go-coordsparser)
|
||
|
|
|
||
|
|
# go-coordsparser
|
||
|
|
A library for parsing (geographic) coordinates in go (golang)
|
||
|
|
|
||
|
|
# What?
|
||
|
|
|
||
|
|
go-coordsparser allows you to parse lat/lng coordinates from strings in various popular formats. Currently supported formats are:
|
||
|
|
|
||
|
|
- **D** (decimal degrees), e.g. `40.76, -73.984`
|
||
|
|
- **HD** (hemisphere prefix, decimal degrees), e.g. `N 40.76 W 73.984`
|
||
|
|
- **HDM** (hemisphere prefix, integral degrees, decimal minutes), e.g. `N 40 45.600 W 73 59.040`
|
||
|
|
- **HDMS** (hemisphere prefix, integral degrees, integral minutes, decimal seconds), e.g. `N 40 45 36.0 W 73 59 02.4`
|
||
|
|
|
||
|
|
# How?
|
||
|
|
|
||
|
|
### Installing
|
||
|
|
Installing the library is as easy as
|
||
|
|
|
||
|
|
```bash
|
||
|
|
$ go get github.com/flopp/go-coordsparser
|
||
|
|
```
|
||
|
|
|
||
|
|
The package can then be used through an
|
||
|
|
|
||
|
|
```go
|
||
|
|
import "github.com/flopp/go-coordsparser"
|
||
|
|
```
|
||
|
|
|
||
|
|
### Using
|
||
|
|
go-coordsparser provides several functions for parsing coordinate strings: a general parsing function `coordsparser.Parse`, which accepts all supported formats, as well as specialized functions `coordsparser.ParseD`, `coordsparser.ParseHD`, `coordsparser.ParseHDM`, `coordsparser.ParseHDMS` for the corresponding coordinate formats.
|
||
|
|
|
||
|
|
Each function takes a single string as a parameter and returns an idiomatic `lat, lng, error` triple, where `lat` and `lng` are decimal degrees (`float64`) with -90 ≤ `lat` ≤ 90 and -180 ≤ `lng` ≤ 180.
|
||
|
|
|
||
|
|
```go
|
||
|
|
// parse any format
|
||
|
|
s1 := "..."
|
||
|
|
lat1, lng1, err := coordsparser.Parse(s1)
|
||
|
|
if err != nil {
|
||
|
|
fmt.Errorf("Cannot parse coordinates string:", s1)
|
||
|
|
}
|
||
|
|
|
||
|
|
// parse specific format, e.g. HDM
|
||
|
|
s2 := "..."
|
||
|
|
lat2, lng2, err = coordsparser.ParseHDM(s2)
|
||
|
|
if err != nil {
|
||
|
|
fmt.Errorf("Cannot parse coordinates string:", s2)
|
||
|
|
}
|
||
|
|
```
|
||
|
|
|
||
|
|
# License
|
||
|
|
Copyright 2016 Florian Pigorsch. All rights reserved.
|
||
|
|
|
||
|
|
Use of this source code is governed by a MIT-style license that can be found in the LICENSE file.
|