Merge branch 'weather'

.gitignore

@@ -2,3 +2,4 @@ output/*/*/*/*/*.html
 output/fonts/*
 tmp/*
 .*.swp
+output/weather.json

Rules

@@ -5,6 +5,11 @@ compile '/' do
   filter :rubypants
 end
 
+compile '/weather/' do
+  layout 'weather'
+  filter :erb
+end
+
 compile %r{/(?:technical|personal|)articles/(page/|)} do
   filter :erb
   layout 'articles'

content/projects.html

@@ -14,3 +14,25 @@ written in Lua. The Lua one is the one currently in use.
 
 [flickr]: http://www.flickr.com/photos/wezm/
 [github]: http://github.com/wezm
+
+Weather Station
+---------------
+
+I have a weather station at my home for keeping track of the local conditions.
+I added support for [SQLite][sqlite] logging to [my fork][open2300fork] of the
+[Open2300][open2300] project. The weather station is connected to our TV
+computer, which is a Mac mini. Periodically it logs the current conditions,
+uploads them to my server and invokes a [lua program][weather-tools] to generate
+a [JSON][json] file, which is used on the [Weather page][weather].
+
+[sqlite]: http://www.sqlite.org/
+[open2300]: http://www.lavrsen.dk/foswiki/bin/view/Open2300/WebHome
+[open2300fork]: http://github.com/wezm/open2300
+[weather]: http://weather.wezm.net/
+[json]: http://www.json.org/
+[weather-tools]: http://github.com/wezm/weather-tools
+
+See the following posts for more information on the weather station:
+
+* [Weather Station Install](/personal/2010/09/weather-station/)
+* [Weather Station Software Update](/technical/2010/09/weather-station-software/)

content/screen.sass

@@ -163,7 +163,7 @@ body > header
   margin-right: 40%
 
 
-body.articles #content
+body.articles #content, body.weather #content
   min-width: 0
   margin-right: 0
 
@@ -417,3 +417,34 @@ table
 .vcard .photo
   margin: 0 1em 1em 0
 
+
+// Weather
+body.weather
+
+  #current > .temperature
+    //margin-left: 1em
+  
+    .temperature
+      font-family: "Helvetica Neue", Helvetica, "Liberation Sans", "Bitstream Vera Sans", Tahoma, Geneva, Arial, sans-serif
+      font-weight: 200
+    
+    .current
+      font-size: 36px
+
+  figure.forecast
+    margin: 0 1em 1em 0
+    width: 48px
+    float: left
+
+  .chart
+    clear: both
+
+    .canvas
+      width: 100%
+      height: 320px
+
+  small
+    display: block
+    font-size: smaller
+    margin-top: 1em
+    color: #999

content/technical/2010/09/weather-station-software.html

@@ -0,0 +1,37 @@
+Two weeks ago when I [installed my weather station][install] I setup the wview
+software to log the current conditions and generate and upload
+HTML and graphs to [http://weather.wezm.net/][weather]. wview seemed like the
+perfect tool for the job but unfortunately it proved unreliable, even with the
+built in process monitoring. After a few hours of running fine it appeared the
+HTML generation process would hang, preventing any further updates to the
+website.
+
+[install]: /personal/2010/09/weather-station/
+[weather]: http://weather.wezm.net/
+
+wview has a lot of functionality and thus a lot of code, which turned me
+off trying to track down the bug. I looked around for
+alternatives and found [Open2300][open2300], which is a core collection of
+functions for communicating with a LaCrosse WS-23xx weather station and a set
+of tools. wview logged its observations to an SQLite database, which seemed
+appropriate for this application. There were tools in Open2300 to log current
+conditions to MySQL and PostgreSQL databases but not SQLite. So last weekend
+I spend some of the afternoon learning enough of the SQLite C API to add
+such a tool. The result is in my 
+[git mirror of the Open2300 SVN repo][open2300git]. Once the SQLite tool is
+tidied up a bit more I'll submit it upstream.
+
+[open2300]: http://www.lavrsen.dk/foswiki/bin/view/Open2300/WebHome
+[open2300git]: http://github.com/wezm/open2300
+
+Now I had a database of observations I needed to replace the HTML pages
+that wview was previously generated. To do this I wrote a small
+[Lua tool][weather-tools]
+to query the database and output the results to a [JSON][json] file. The
+JSON is used on the new [weather page][weather], which is largely populated
+by Javascript and uses the [flot charting library][flot] to graph the
+temperature history.
+
+[json]: http://www.json.org/
+[flot]: http://code.google.com/p/flot/
+[weather-tools]: http://github.com/wezm/weather-tools

content/technical/2010/09/weather-station-software.yaml

@@ -0,0 +1,13 @@
+--- 
+title: Weather Station Software
+extra: After trouble with the wview weather station software I built my own solution to log and publish weather conditions.
+kind: article
+section: technical
+created_at: 2010-09-26 17:01:00
+keywords: 
+- weather
+- station
+- wview
+- open2300
+- software
+short_url: http://bit.ly/9Sf8Lu

content/weather.html

@@ -0,0 +1,15 @@
+<h2>Temperature</h2>
+
+<div class="loading"><img src="/images/spinner.gif" width="64" height="64" alt="Loading" /> Loading</div>
+
+<div class="temperature chart">
+  <!--><button id="year">Year</button>
+  <button id="month">Month</button>
+  <button id="day">Day</button>-->
+  <div class="canvas"></div>
+</div>
+
+<!-- <h2>Rainfall</h2>
+<div class="rainfall chart"></div> -->
+
+<small>Forecast icons by <a href="http://lavana.deviantart.com/art/Flat-Weather-Icons-32021664">LavAna</a></small>

content/weather.yaml

@@ -0,0 +1,2 @@
+--- 
+title: Macedon Weather

layouts/weather.html

@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <%= render '_head' %>
+  <script src="/js/jquery.flot.min.js" type="text/javascript" charset="utf-8"></script>
+  <!--[if IE lt 9]><script language="javascript" type="text/javascript" src="/js/excanvas.min.js"></script><![endif]-->
+  <script src="/js/mojo.js" type="text/javascript" charset="utf-8"></script>
+  <script src="/js/weather.js" type="text/javascript" charset="utf-8"></script>
+</head>
+<body class="weather">
+  <%= render '_header' %>
+  <div id="content">
+    <h1><a href="<%= @item.reps.first.path %>"><%=h @item[:title] %></a></h1>
+    <%= yield %>
+  </div>
+  <%= render '_footer' %>
+</body>
+</html>

output/js/mojo.js

@@ -6,7 +6,7 @@
     
     // --- Version
     
-    version: '0.2.0',
+    version: '0.3.0',
     
    /**
     * Escape HTML.
@@ -33,8 +33,11 @@
      * @api public
      */
 
-    normalize: function(object) {
+    normalize: function(object, property) {
+      if(property === undefined)
         return typeof object == 'function' ? object() : object
+      else
+        return typeof object[property] == 'function' ? object[property]() : object[property]
     },
 
     /**

output/js/weather.js

@@ -0,0 +1,154 @@
+function render_current(o) {
+  return '<div id="current">\n\
+    <figure class="forecast">\n\
+      <img src="/images/weather/' + (Mojo.escape(Mojo.normalize(o, "forecast"))) + '.png" width="48" height="48" alt="' + (Mojo.escape(Mojo.normalize(o, "forecast"))) + '" />\n\
+      <figcaption>Forecast</figcaption>\n\
+    </figure>\n\
+  \n\
+    <div class="temperature">\n\
+      <div class="current temperature">' + (Mojo.escape(Mojo.normalize(o, "temperature"))) + '&deg;C</div>\n\
+      <div class="minmax">\n\
+        Minimum <span class="min temperature">' + (Mojo.escape(Mojo.normalize(o, "min_temp"))) + '&deg;C</span> at\n\
+        <time datetime="' + (Mojo.escape(Mojo.normalize(o, "min_datetime"))) + '">' + (Mojo.escape(Mojo.normalize(o, "minDateString"))) + '</time>\n\
+        Maximum <span class="max temperature">' + (Mojo.escape(Mojo.normalize(o, "max_temp"))) + '&deg;C</span> at\n\
+        <time datetime="' + (Mojo.escape(Mojo.normalize(o, "max_datetime"))) + '">' + (Mojo.escape(Mojo.normalize(o, "maxDateString"))) + '</time>\n\
+      </div>\n\
+    </div>\n\
+  </div>';
+};
+
+// {"wind_angle":270,"rel_humidity_in":51,"rain_1h":0,"temperature_out":9.9,"forecast":"Sunny","rain_24h":0,"dewpoint":7.11,"wind_chill":9.9,"temperature_in":20.8,"rel_humidity_out":83,"tendency":"Rising","wind_speed":0,"rel_pressure":970.7,"rain_total":1.55,"datetime":"2010-09-20 11:30:13","wind_direction":"W"}
+
+// forecaset is Rainy, Cloudy or Sunny
+
+// Return a string of a number padded with leading zeros
+function padNumber(n, count) {
+  if(count === undefined) count = 2;
+
+  var string = n.toString();
+  var padding = [];
+  for(var i = count - string.length; i > 0; i--) {
+    padding.push('0');
+  }
+  return padding.join('') + string;
+}
+
+function isoString(date) {
+  // YYYY-MM-DDTHH:MM:SS
+  if(!date) return '';
+
+  return [
+    [
+      date.getUTCFullYear(),
+      padNumber(date.getUTCMonth() + 1),
+      padNumber(date.getUTCDate())
+    ].join('-'),
+    'T',
+    [
+      padNumber(date.getUTCHours()),
+      padNumber(date.getUTCMinutes()),
+      padNumber(date.getUTCSeconds())
+    ].join(':')
+  ].join('')
+}
+
+function datetimeString(date) {
+  var months = ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];
+  return [
+    date.getUTCDate(),
+    months[date.getUTCMonth()],
+    timeString(date)
+  ].join(' ')
+}
+
+function timeString(date) {
+  return [
+    padNumber(date.getUTCHours()),
+    padNumber(date.getUTCMinutes())
+  ].join(':')
+}
+
+jQuery(function() {
+  jQuery.getJSON("/weather.json", function(data, status) {
+    var count = data.history.length;
+    for(var i = 0; i < count; i++) {
+      data.history[i][0] = new Date(data.history[i][0]);
+    }
+
+    // Populate the current conditions
+    var current = {
+      temperature: data.current.temperature_out,
+      timestamp: function() {
+        var d = new Date(data.current.timestamp);
+        return datetimeString(d);
+      },
+      min_temp: data.current.min.temperature,
+      min_date: new Date(data.current.min.timestamp),
+      min_datetime: function() {
+        return isoString(this.min_date)
+      },
+      minDateString: function() {
+        return timeString(current.min_date)
+      },
+      max_temp: data.current.max.temperature,
+      max_date: new Date(data.current.max.timestamp),
+      max_datetime: function() {
+        return isoString(this.max_date)
+      },
+      maxDateString: function() {
+        return timeString(current.max_date)
+      },
+      forecast: data.current.forecast
+    };
+
+    var current_div = render_current(current);
+    $('.loading').replaceWith(current_div)
+
+    // Populate the charts
+    $('.temperature.chart .canvas').each(function() {
+      var self = this;
+
+      var options = {
+        xaxis: {
+          mode: "time"
+        }
+      };
+
+      jQuery.plot(self, data.history, options);
+
+      /*
+      $("#year").click(function () {
+          $.plot(self, data.history, {
+            xaxis: {
+                mode: "time",
+                minTickSize: [1, "month"] //,
+                // min: (new Date("1990/01/01")).getTime(),
+                // max: (new Date()).getTime()
+            }
+
+          });
+      });
+
+      $("#month").click(function () {
+          $.plot(self, data.history, {
+              xaxis: {
+                  mode: "time",
+                  min: (new Date("2010/08/21")).getTime(),
+                  max: (new Date()).getTime()
+              }
+          });
+      });
+
+      $("#day").click(function () {
+          $.plot(self, data.history, {
+              xaxis: {
+                  mode: "time",
+                  min: (new Date("2010/09/21 00:00")).getTime(),
+                  max: (new Date()).getTime()
+              }
+          });
+      });
+      */
+    });
+  });
+});

templates/current_weather.html

@@ -0,0 +1,16 @@
+<div id="current">
+  <figure class="forecast">
+    <img src="/images/weather/{{forecast}}.png" width="48" height="48" alt="{{forecast}}" />
+    <figcaption>Forecast</figcaption>
+  </figure>
+
+  <div class="temperature">
+    <div class="current temperature">{{temperature}}&deg;C</div>
+    <div class="minmax">
+      Minimum <span class="min temperature">{{min_temp}}&deg;C</span> at
+      <time datetime="{{min_datetime}}">{{minDateString}}</time>
+      Maximum <span class="max temperature">{{max_temp}}&deg;C</span> at
+      <time datetime="{{max_datetime}}">{{maxDateString}}</time>
+    </div>
+  </div>
+</div>