added prez

calvinmetcalf · Apr 25, 2013 · ae8096b · ae8096b
1 parent 4f18caf
commit ae8096b
Show file tree

Hide file tree

Showing 4 changed files with 292 additions and 0 deletions.
diff --git a/big.css b/big.css
@@ -0,0 +1,39 @@
+body {
+  font-family: 'Helvetica';
+  letter-spacing:-5px;
+  background:#000;
+  background-size:100%;
+  color:#fff;
+  margin:0;
+  padding:0;
+  font-weight:bold;
+}
+
+h1, h2, h3, p {
+  margin:0;
+}
+
+em, a {
+  font-style:normal;
+  color:#8dbd0c;
+}
+
+a {
+  background: #34d0e7;
+  color:#000;
+  text-decoration:none;
+}
+
+img {
+  width:100%;
+}
+
+div {
+  cursor:pointer;
+  cursor:hand;
+  position:absolute;
+  top:0;
+  left:0;
+}
+
+.GreenDOT {background:#0f0;}
diff --git a/big.js b/big.js
@@ -0,0 +1,56 @@
+window.onload = function() {
+    var converter = new Showdown.converter();
+    var md = document.getElementById("md");
+    var html = converter.makeHtml(md.innerHTML);
+    md.innerHTML = html.replace(/\<(\/)?p\>/g,'<$1div>');
+    var s = document.getElementsByTagName('div'), cur = 0;
+    if (!s) return;
+    function go(n) {
+        cur = n;
+        var i = 1e3, e = s[n];
+        for (var k = 0; k < s.length; k++) s[k].style.display = 'none';
+        e.style.display = 'inline';
+        e.style.fontSize = i + 'px';
+        if (e.firstChild.nodeName === 'IMG') {
+            document.body.style.backgroundImage = 'url(' + e.firstChild.src + ')';
+            e.firstChild.style.display = 'none';
+        } else {
+            document.body.style.backgroundImage = '';
+            document.body.style.backgroundColor = e.style.backgroundColor;
+        }
+        while (
+            e.offsetWidth > window.innerWidth ||
+            e.offsetHeight > window.innerHeight) {
+            e.style.fontSize = (i -= 10) + 'px';
+            if (i < 0) break;
+        }
+        e.style.marginTop = ((window.innerHeight - e.offsetHeight) / 2) + 'px';
+        if (window.location.hash !== n) window.location.hash = n;
+        document.title = e.textContent || e.innerText;
+    }
+    document.onclick = function() {
+        go(++cur % (s.length));
+    };
+    document.onkeydown = function(e) {
+        (e.which === 39) && go(Math.min(s.length - 1, ++cur));
+        (e.which === 37) && go(Math.max(0, --cur));
+    };
+    var xStart;
+    md.addEventListener("touchstart",function(e){xStart = e.changedTouches[0].pageX}, false)
+    md.addEventListener("touchend",function(e){var test = e.changedTouches[0].pageX-xStart;
+    (test < 0) && go(Math.min(s.length - 1, ++cur));
+    (test > 0) && go(Math.max(0, --cur));
+    }, false)
+    function parse_hash() {
+        return Math.max(Math.min(
+            s.length - 1,
+            parseInt(window.location.hash.substring(1), 10)), 0);
+    }
+    if (window.location.hash) cur = parse_hash() || cur;
+    window.onhashchange = function() {
+        var c = parse_hash();
+        if (c !== cur) go(c);
+    };
+
+    go(cur);
+};
diff --git a/index.html b/index.html
@@ -0,0 +1,135 @@
+<!DOCTYPE html><html><head><title></title><meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" /><link href='big.css' rel='stylesheet' type='text/css' /><script src='showdown.js'></script><script src='big.js'></script></head><body>
+<span id="md">
+Convert ESRI to GeoJSON
+
+so you have some data in SDE
+
+and want to use it on the internet
+
+_let's just use ArcGIS online..._
+
+said nobody
+
+you want to use it in
+
+![tilemill](http://mapbox.com/tilemill/img/hero-tilemill.png)_TileMill_
+
+or
+
+![leaflet](http://farm9.staticflickr.com/8527/8680357801_712bc7e350_o_d.png)leaflet
+
+And you like having fieldnames longer then 8 charicters
+
+I'll just convert to geojson, it's similar right?
+
+![differences](https://pbs.twimg.com/media/BF0YSy2CEAAJYcH.png:large)_no_
+
+ESRI has 4 geometry types
+
+point
+
+multipoint
+
+polyline
+
+polygon
+
+GeoJSON has those
+
+but calls them Point, MultiPoint, LineString, and Polygon
+
+GeoJSON also has
+
+MultiLineString, MultiPolygon, and GeometryCollection
+
+ESRI a geometry type for the feature class and all features to have that or null
+
+GeoJSON requires it to be anything except null
+
+So I wrote an arcpy script to automate the export
+
+and then got distracted after finishing 95%
+
+But then
+
+![Michael Byrne](https://secure.gravatar.com/avatar/b57972826b35359132d2952182aa0b0e?s=1200)Michael Byrnes started his
+
+Now I MUST finish mine
+
+and/or merge our efforts
+
+anywho back to the point
+
+that 5% I had left to solve
+
+_inner rings_
+
+GeoJSON has an array with the first feature being the outer and the rest being the inner rings
+
+ESRI has a bunch of points, some of them are null
+
+you have to check the existence of eveyr point
+
+![what inner rings think of you](http://farm9.staticflickr.com/8383/8680565639_7e37a973e0_o_d.png)
+
+ESRI requires first and last point of a polygon to be the same
+
+i.e. repeat point
+
+_SO DOES GEOJSON FTW!!!1_
+
+ESRI allows polygones with a total of less then 4 points
+
+NO SANE FRAMEWORK DOES THIS!
+
+it also allows lines with only one point
+
+which means you have polygons that could be lines or points
+
+and lines that could be points
+
+and while were at it, ESRI allows multi points with only one point
+
+and makes no distinction between multi and regular for line and poly
+
+but some parts of a single multipoly could be a line
+
+and some a point
+
+and some a poly
+
+_solution_
+
+waterfall model
+
+parsePolygone either returns geo or calls parseLinestring
+
+etc with line->point
+
+fallback to next type
+
+and if a multi and mixed
+
+_GeometryCollection FTW_
+
+of course going backwards
+
+![geojson to esri](https://pbs.twimg.com/media/BF0btM5CIAUvXwC.png:large)_Have Fun_
+
+_fin_
+
+[github.com/calvinmetcalf/esri2open](https://github.com/calvinmetcalf/esri2open)
+[github.com/feomike/esri2open](https://github.com/feomike/esri2open)
+[calvinmetcalf.github.io/esri2open](http://calvinmetcalf.github.io/esri2open)
+[@cwmma](https://twitter.com/CWMma)
+</span>
+<script>
+  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+  })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+
+  ga('create', 'UA-40454900-1', 'github.io');
+  ga('send', 'pageview');
+
+</script>
diff --git a/showdown.js b/showdown.js