Intro to QGIS - Make a Map

Download the Data Package

What is QGIS?

Free and Open Source GIS Software

Official Project of QSGEO
Runs on Linux, Unix, Mac OSX, Windows, and Android(!)
Fully capable, supports vector (points, lines, polygons) and raster

Licensed under the
GNU General Public License

Who is QSGEO?
Open Source Geospatial Foundation
Community of Developers
QGIS, Grass, OpenLayers, etc.

History of QGIS:
Started in 2002 by Gary Sherman Version 1.0 in 2009

Gary Sherman - History of QGIS Committers (2011)

Components of QGIS

QGIS Desktop

QGIS Browser

QGIS Server

QGIS Web Client

QGIS for Android (beta)
Mobile! Try if you dare!

Lets make maps! Download:
QGIS 2.4

Todays Task: RAT MAP!
Open Data Boston

But First...
a little to get you started.

Get familiar with the UI

Map Navigation Toolbar

File Toolbar

Manage Layers

Attribute Toolbar

Layers Panel

Browser Panel

View -> Toolbars

Add Data

Add Data
Boston Neighborhoods
Rodent Activity (CSV)
Data Package

Adding Data - What is supported?
OGR Vector Formats
GDAL Raster Formats
PostGIS, OracleSpatial, SpatialLite
Tabular (csv, tsv, etc.)

Will default to: WGS84
Layers -> Individual basis
Project -> Project Properties

Reprojecting a Dataset:
Right Click on Layer -> Save As

Enable 'on the fly'

Let's Symbolize

Layer Properties

Symbolize in Style Tab

Explore the Other Properties


We won't really do this today.
but you can!


Vector Menu
Raster Menu

Try Points in Polygon
Calculate the Neighborhoods with the most Rat Violations

Exporting Datasets
Right click -> Save as...
Preserve your transformations.

To the Print Composer

Maps are composed in QGIS using the Print Composer

Add the map element.

Layout your map presentation in Print Composer.
Maps, Legend, Scale, North Arrow, etc.
You can save it and return to it, and update it!

The Layout Process

When satisfied:
Export Image
Export PDF
Export SVG

Other QGIS Features:
Map Services
QGIS Server
Web Publishing
Database Connections

One of the neatest features of QGIS
Tons of Open Source Plugins
Plugins -> Plug In Manager

More QGIS in the Future
This is only the beginning.
But for now...

Make a RAT MAP!
Have at it, and have fun!
Download the Data ZIP