開放源碼香港天氣計劃 hk0weather
昨晚半夜終於第一次放 source code 上 github，hk0weather 是其中一個我打算拿出來 open source 的 projects。把 hk0weather 開放源碼的其中一個原因是，希望幫助打造香港的 Open Data 之類，實在忍不了香港某方那些所謂 (很爛的) Open Data 的格式。同時我也欣賞台灣的 g0v.tw 的工作，一直我也對一些政府或公共資料該如何公開 (open data) 有些意見 (提議)，而由民間或社群來進行也是其中一個可取的方法，來帶動香港的 open data 發展。
https://github.com/sammyfung/hk0weather
第一個版本是把香港天文台的天氣報告，把各氣象站的溫度，以及香港天文台錄得的相對濕度，轉化以 json 資料或其他格式。基本上已足夠一般網站，從輸出 json 資料中取得香港氣溫來顯示。
hk0weather 是以 python 來編寫，利用 scrapy 作 web crawling 的 framework。以下是未經測試的使用例子。
$ virtualenv hk0weatherenv
$ source hk0weatherenv/bin/activate
$ pip install scrapy
$ git clone https://github.com/sammyfung/hk0weather.git
$ cd hk0weather
$ scrapy crawl currwx -t json -o testresult
以下是測試結果的 json 輸出。
[{"humidity": 80, "station": "hko", "temperture": 17, "time": 1360785720},
{"station": "kingspark", "temperture": 16, "time": 1360785720},
{"station": "wongchukhang", "temperture": 17, "time": 1360785720},
{"station": "takwuling", "temperture": 16, "time": 1360785720},
{"station": "laufaushan", "temperture": 15, "time": 1360785720},
{"station": "taipo", "temperture": 16, "time": 1360785720},
{"station": "shatin", "temperture": 17, "time": 1360785720},
{"station": "tuenmun", "temperture": 17, "time": 1360785720},
{"station": "tseungkwano", "temperture": 16, "time": 1360785720},
{"station": "saikung", "temperture": 16, "time": 1360785720},
{"station": "cheungchau", "temperture": 17, "time": 1360785720},
{"station": "cheungchau", "temperture": 17, "time": 1360785720},
{"station": "tsingyi", "temperture": 17, "time": 1360785720},
{"station": "shekkong", "temperture": 15, "time": 1360785720},
{"station": "tsuenwanhokoon", "temperture": 15, "time": 1360785720},
{"station": "tsuenwanshingmunvalley", "temperture": 17, "time": 1360785720},
{"station": "hongkongpark", "temperture": 17, "time": 1360785720},
{"station": "shaukeiwan", "temperture": 16, "time": 1360785720},
{"station": "kowlooncity", "temperture": 16, "time": 1360785720},
{"station": "happyvalley", "temperture": 18, "time": 1360785720},
{"station": "wongtaisin", "temperture": 17, "time": 1360785720},
{"station": "stanley", "temperture": 16, "time": 1360785720},
{"station": "kwuntong", "temperture": 15, "time": 1360785720},
{"station": "shamshuipo", "temperture": 17, "time": 1360785720}]
hk0weather 計劃未來除了會慢慢加入更多不同的氣象資料外，也打算跟一些比我更 pro 的氣象發燒友合作。而 hk0weather 這個 open source 版本是我另外重寫的，跟我在 twitter 的 @weatherhk 背後所運行的 python 程式有所不同。
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would you want to add this under OpenDataHK organization? https://github.com/OpenDataHK