migurski’s gists

migurski / cut-up-routes2.py

Created October 31, 2012 17:53

Skeletron Dumper and Cutter of Routes

	'''

	#!/bin/sh -x

	apt-get -y update
	apt-get -y install htop osmosis git python-pip python-shapely python-pyproj python-networkx qhull-bin

	git clone git://github.com/migurski/Skeletron.git ~/Skeletron
	cd ~/Skeletron
	python setup.py install

migurski / snip-lines.py

Created October 30, 2012 05:33

Sketch for topological simplification of national hydrology dataset

	'''

	ogr2ogr -overwrite -t_srs '+proj=aea +lat_1=29.5 +lat_2=45.5 +lat_0=23 +lon_0=-96 +x_0=0 +y_0=0 +ellps=GRS80 +datum=NAD83 +units=m +no_defs' PG:"user=nhd dbname=nhd" NHDFlowline.shp

	create table nhdflowline_snapped ( ogc_fid integer primary key );

	select addgeometrycolumn('', 'nhdflowline_snapped', 'geometry', 900914, 'LINESTRING', 2);
	create index nhdflowline_snapped_geom_idx on nhdflowline_snapped using gist (geometry);

	insert into nhdflowline_snapped

migurski / extract-routes.py

Created October 18, 2012 23:04

OSM Route Relation Refiner, see also data at http://teczno.com/s/c4c

	''' Extract route relations from osm2pgsql-generated database to CSV.
	'''
	from sys import argv
	from csv import writer
	from psycopg2 import connect

	if __name__ == '__main__':

	db = connect(database='raster_osm', user='osm').cursor()

migurski / merge-geojsons.py

Created September 21, 2012 03:43

Merge multiple GeoJSON files into one

	from json import load, JSONEncoder
	from optparse import OptionParser
	from re import compile

	float_pat = compile(r'^-?\d+\.\d+(e-?\d+)?$')
	charfloat_pat = compile(r'^[\[,\,]-?\d+\.\d+(e-?\d+)?$')

	parser = OptionParser(usage="""%prog [options]

	Group multiple GeoJSON files into one output file.

migurski / gray-scott.py

Created September 9, 2012 02:21

Adaptation of Nicolas P. Rougier’s Gray-Scott implementation with the Glumpy dependencies removed

	#!/usr/bin/env python
	# -- coding: utf-8 --
	# -----------------------------------------------------------------------------
	# Copyright INRIA
	# Contributors: Nicolas P. Rougier ([email protected])
	#
	# DANA is a computing framework for the simulation of distributed,
	# asynchronous, numerical and adaptive models.
	#
	# This software is governed by the CeCILL license under French law and abiding

migurski / measure-sizes.py

Created August 3, 2012 21:15

Two scripts for creating heatmap of OSM data size, e.g. https://tiles.mapbox.com/migurski/map/osmsize

	from sys import argv, stdout, stderr
	from subprocess import Popen
	from os import stat, unlink
	from math import log, ceil
	from stat import ST_SIZE
	from time import time

	from ModestMaps.OpenStreetMap import Provider
	from ModestMaps.Core import Coordinate

migurski / remotefile.py

Created August 1, 2012 18:44

RemoteFileObject is a simple mapping from HTTP Range headers to a local file-like object

	from time import time
	from urlparse import urlparse
	from httplib import HTTPConnection
	from os.path import basename
	from cStringIO import StringIO
	from datetime import timedelta
	from os import SEEK_SET, SEEK_CUR, SEEK_END

	class RemoteFileObject:
	""" Implement enough of this to be useful:

migurski / image-queue.js

Created July 25, 2012 20:33

Image Queue

	function ImageQueue()
	{
	var closedRequests = {},
	queueList = [],
	queueByHref = {},
	numOpenRequests = 0,
	openRequests = {};

	function addImage(href, onload)
	{

migurski / Lambert.py

Created July 5, 2012 18:16

Lambert Conformal Conic implementation with US-specific transformation

migurski / gunicorn-slayer.py

Created June 21, 2012 06:41

Gunicorn Slayer

	from sys import argv
	from time import time
	from glob import glob
	from os import stat, kill, getuid
	from os.path import basename, dirname, join
	from datetime import datetime
	from random import choice
	from signal import SIGTERM

	if __name__ == '__main__':

Michal Migurski migurski