Intro to QGIS - Make a Map
#maptimeBoston
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FOSS4G 2017 BOSTON
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Thank You
CartoDB
Cambridge Innovation Center
Axis Maps
QGIS
What is QGIS?
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
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 2.12
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
Others
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.)
Projections
Will default to the projection set in your project, if none 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
Labels
Fields
Display
Actions
Joins
Diagrams
Metadata
Editing
We won't really do this today.
but you can!
Geoprocessing
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
Python
Database Connections
Plugins!
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
