A demo of the d3.geo.tile plugin, which determines which 256x256 tiles are visible in the viewport based on a scale and translate. This demo combines the tile plugin with d3.behavior.zoom for panning and zooming, resulting in a a simple slippy map. Based partly on an example by Tom MacWright.
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SELECT *, rank() OVER (PARTITION BY challenge_id ORDER BY user_num_captures DESC) AS rank, | |
(SELECT COUNT(*) FROM captures WHERE challenge_id = subq.challenge_id) as total_captures | |
FROM (SELECT challenge_id,ch.title, player_id,count(*) AS user_num_captures FROM captures AS ca INNER JOIN challenges AS ch ON ca.challenge_id=ch.cartodb_id GROUP BY challenge_id,ch.title,player_id) AS subq |
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<?php | |
require("Encoding.php"); | |
//Get IDs | |
$jsonurl = "http://lamp.sla.ny.gov/ArcGIS/rest/services/sla/MapServer/4/query?text=&geometry=&geometryType=esriGeometryPoint&inSR=&spatialRel=esriSpatialRelIntersects&relationParam=&objectIds=&where=1%3D1&time=&returnIdsOnly=true&returnGeometry=true&maxAllowableOffset=&outSR=4326&outFields=OBJECTID%2CShape%2CSerialNo%2CLicenseType%2CLicenseClass%2CZone%2CCountyCode%2CName%2CDBA%2CAddress1%2CAddress2%2CCity%2CState%2CZIP%2CLicenseCat%2CLicenseSym&f=json"; | |
$json = file_get_contents($jsonurl,0,null,null); | |
$json_output = json_decode($json); |
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-- Moving Hawaii and Alaska closer to mainland | |
--Hawaii | |
UPDATE map_guardian_gop SET the_geom = ST_Transform(ST_Translate(the_geom_webmercator,5500000,800000),4326) WHERE state_fips='15' | |
--Alaska, move and rotate | |
UPDATE map_guardian_gop SET the_geom = ST_Transform(ST_Scale(ST_Translate(the_geom_webmercator,-11000000,-3500000),0.5,0.5),4326) WHERE state_fips='02' | |
UPDATE map_guardian_gop SET the_geom = ST_Transform(ST_Rotate(the_geom_webmercator,pi()/8,-16500000,2800000),4326) WHERE state_fips='02' |
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//Furthest distance travelled from start point. // http://javi.cartodb.com/api/v2/sql?q= | |
WITH points AS | |
(SELECT | |
(SELECT (the_geom) FROM stratos ORDER BY id ASC LIMIT 1) as p1, | |
(SELECT (the_geom) FROM stratos | |
WHERE ST_x(the_geom)<180 AND ST_x(the_geom)>-180 AND ST_x(the_geom)<>0 | |
AND ST_x(the_geom)<>0 ORDER BY ST_Distance(the_geom,(SELECT the_geom | |
FROM stratos ORDER BY id ASC LIMIT 1)) DESC LIMIT 1) as p2 | |
) | |
SELECT ST_distance(p1::geography,p2::geography) as furthest_distance FROM points |
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#in myquery.sql you can have a VEERY BIG SQL file that you need to run on CartoDB, like a huge INSERT or UPDATE | |
curl --data "api_key=XXXXXXXXXXXXXXXXXXXXXXXXX&q=`cat myquery.sql`" https://jatorre.cartodb.com/api/v1/sql |
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<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<style type="text/css"> | |
html, body {height: 100%; padding: 0; margin: 0;} | |
#map {position:absolute; width:100%; top:0; right:0; bottom:0; left:0;} | |
</style> | |
<link href="http://staging20.cartodb.com/assets/leaflet-510ae051a5d99e48b066cfdc9b22c20b.css" media="screen" rel="stylesheet" type="text/css" /> | |
<link href="http://staging20.cartodb.com/assets/cdb/themes/css/cartodb-3836c012509ff34e44900ab95393c88f.css" media="screen" rel="stylesheet" type="text/css" /> |
Testing
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mkdir tmpfolder; | |
cd tmpfolder; | |
wget "http://www2.census.gov/geo/tiger/TIGER2012/TRACT/tl_2012_01_tract.zip"; | |
unzip tl_2012_01_tract.zip; | |
shp2pgsql -s4326 -p tl_2012_01_tract.shp census | psql -hlocalhost -Upostgres -dcensus; | |
rm -rf tl_2012_01_tract.*; | |
for i in {1..9} :; | |
do | |
wget "http://www2.census.gov/geo/tiger/TIGER2012/TRACT/tl_2012_0${i}_tract.zip"; | |
unzip tl_2012_0${i}_tract.zip |
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/** bubble visualization */ | |
#tm{ | |
marker-fill: #FF5C00; | |
marker-line-color: #FFF; | |
marker-line-width: 2; | |
marker-line-opacity: 1; | |
marker-opacity: 0.8; | |
marker-placement: point; | |
marker-type: ellipse; |