Wikipedia

Wikipedia:Graphic Lab/Resources/Wikimaps atlas/Lesson a1

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Ubuntu/Linux

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The project is prototyped with and currently requires Linux/Ubuntu

Installing MAKE

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MAKE is an utility helping to serialized shell commands while stating the pre-required elements for each of these commands. As such, running a well conceived makefile allow to reproduce a complexe tree-like network of commands, in the right order, despite several starting points and bricks required for a final output or group of outputs. To install MAKE: 

sudo apt-get install make	#for linux>Ubuntu

Therefore, Wikiatlas modules use a makefiles to gather all commands to perform on the relevant GIS data, raster or shapefiles, from downloading the source GIS file to generating the final SVG or bitmap map file.

How to use makefiles

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1. Create a directory :
mkdir ~/wikiatlas #aka /home/<username>/wikiatlas
2. Copy a valid MAKE code from Wikipedia
3. In directory > save code as text file script.makefile
4. Terminal > get to relevant folder & run the makefile
cd ~/wikiatlas			# get terminal on right directory
make -f script.makefile		# run the target makefile (here with 0 parameters)

Installing utilities

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For the whole "Wikimaps Atlas: stand alone" system, bellow are the list of required utilities and a valid makefiles version of it.

Wikimaps_Atlas: List of utilities
Commands to run To save as utilities.makefile 
success: utilities something low_level nodejs		#a task with 4 requirements
	echo "======================================"	#this is the 1st command
	echo "Wikiatlas setup: done --------> 100% !"
	#tab before each command is COMPULSORY (spaces will bug!).

utilities:			# a task with no dependency
	sudo apt-get install make curl unzip unrar gdal-bin 
 
something:
	sudo apt-get install build-essential		#comment, is this needed ?
 
nodejs:				#for d3js & svg generation
	sudo add-apt-repository ppa:chris-lea/node.js
	sudo apt-get update
	sudo apt-get install nodejs
	sudo npm install -g topojson jsdom
 
low_level:			#for more advanced coding
	sudo apt-get install python-software-properties python g++
To do To do
(copy-paste in terminal) run 
mkdir ~/wikiatlas
cd ~/wikimaps
make -f utilities.makefile
Extended content
Utilities:
  • make - GNU make utility to maintain groups of programs
  • curl - utility to downaload URLs
  • unzip - list, test and extract compressed files in a ZIP archive
  • gdal? - a translator library for raster geospatial data formats, comes with a variety of useful commandline utilities for data translation and processing. www.gdal.org
    • gdaldem - gdaldem Tools to analyze and visualize DEMs.
    • ogr2ogr - ogr2ogr converts simple features data between file formats
    • gdal_polygonize.py - creates vector polygons for all connected regions of pixels in the raster sharing a common pixel value.
    • gdal_calc.py - command line raster pixels calculator with numpy syntax
  • convert - convert images for formats, size, blur, crop, despeckle, dither, draw on, flip, join, re-sample, and more. http://www.imagemagick.org/script/convert.php
  • node - Server-side JavaScript with helpful internal librairies
  • D3js - D3.js is a JavaScript library for manipulating HTML-CSS documents based on data. https://github.com/mbostock/d3/wiki/API-Reference

Action: When run, utilities.makefile downloads and installs one after another the needed scripts and dependencies required by Wikiatlas, either stand alone and server versions.

See also

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The table above has links to various tutorials and resources which can help in the creation of Wikipedia maps from digital georeferenced data (GIS).

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