Jorge Sanz jsanz

Charla sobre perspectivas profesionales para TIG 2014

Jorge Sanz
@xurxosanz
http://jorgesanz.net

Minimal HTML, CSS and JavaScript example for the Open Source Opportunities in GIS Summer School.

Also available as a jsFiddle.

OSGeo Charter Members data

https://osgeo-charter-members.glitch.me

What is this repository for?

This is a simple exercise to learn D3 basics using a data set I have at hand, the charter members of the Open Source Geospatial Foundation OSGeo.

This is an example ~~of extending the OL3 [TextFeature] format class~~ to parse the data coming from a Google [Form] backed by a public Google [Spreadsheet].

Add an event (name, web and coordinates) and check the [demo].

The magic comes from calling the [JSON] version of the spreadsheet. The weirdest part is the owz14uv string that I had to guess thanks to this [blog post].

Click on the space between any of the pairs of polygons to update the map.

This is a demo for an SQL function defined in CartoDB. The function takes two adjacent polygons and two points near their borders and return a polygon that fills the space between those polygons up to those points.

To execute the geoprocess draw to adjacent polygons and two points on their borders. Draw a new point or a new polygon to execute again the process.

The SQL called then is:

SELECT ST_AsGeoJSON(
  fillempty(
 polygon1, polygon2,

	# Command to use the NTV2 grid file correctly to convert
	# from 23030 (ED50) to 25830 (ETRS89), both in UTM30N
	# hint: define all the f$cking SRS params

	ogr2ogr \
	-t_srs "+proj=utm +zone=30 +ellps=GRS80 +units=m +nadgrids=/path/to/sped2et.gsb" \
	-s_srs "epsg:23030" \
	-a_srs "epsg:25830" \
	-f "ESRI Shapefile" output_shp_25830.shp input.shp

	<!DOCTYPE html>
	<html>
	<head>
	<title>My Map</title>
	<link rel="stylesheet" href="openlayers/theme/default/style.css" type="text/css">
	<style>
	#map-id {
	width: 512px;
	height: 256px;
	}

	# Simple script to take from the OSGeo wiki the data to
	# print on the console the lines to be used on the
	# electronic voting system to produce meaninful
	# questions with links and info.

	from BeautifulSoup import BeautifulSoup
	import urllib

	nominations_url = 'http://wiki.osgeo.org/wiki/New_Member_Nominations_2014'
	response = urllib.urlopen(nominations_url)

	<!DOCTYPE html>
	<html>
	<head>
	<title>Trying to hide the layers\| CartoDB.js</title>
	<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
	<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
	<link rel="shortcut icon" href="http://cartodb.com/assets/favicon.ico" />
	<style>
	html, body, #map {
	height: 100%;