script.md

QGIS 101 Instructor Script

Overview

GIS Resource links:

Setup

Live slides https://slides.com/staceymaples/gisintro-1/live

Document:

https://mapninja.github.io/QGIS-101/

Software

https://qgis.org/en/site/forusers/download.html

Data

https://github.com/mapninja/QGIS-101/archive/master.zip

The project data folder contains the following datasets:

Additional Files

Getting started on a project

create and save as SnowMap

Interface overview

Canvas Panels Toolbars

Customize interface

Rearrange things

Add a plugin

Quickmaps, and add contributed package from settings

Add a basemap service layer

Add the Stamen stamenbasemap

Add an existing data layer

Add the Study Layer data

Explore navigation tools

show zoom and pan, etc...

Scale

Highlight scale displayed

Spatial Bookmarks

Create a SOHO bookmark at teh extent of the study area layer

Working with CRS

Examine the CRS of a data layer

Examine the CRS of projected

Set Project CRS to study area layers

Create a data layer from an XY table?

Use Delimited Text tool to add deathAddresses to Canvas

Layer symbology

Proportional Symbol on Num_Cases

Bonus: Adding Drop Shadows

defaults

Viewing the Attribute Table

sort on Num_Cases

Statistics on a field

Vector > Analysis Tools > Basic Statistics for Fields

Finding a map

We'll start by looking at this map [Gegend von London 1853] of London on https://davidrumsey.com

Add a map service

WMTS Link

https://maps.georeferencer.com/georeferences/435516159934/2019-02-19T17:27:12.514288Z/wmts?key=mpIMvCWIYHCcIzNaqUSo&SERVICE=WMTS&REQUEST=GetCapabilities

Georeference a map

snow_map.png

Digitize features from a georeferenced map

Create a point shapefile called water_pumps.shp with Label fields

Symbolize for template

Add points to your shapefile

Labels

make labels with halos

Projecting data

Export to EPSG:32630 for Analysis

Copying Symbologies

Copy and Paste to new layer

Basic spatial data analysis

Voronoi (Thiessen) polygon (Spatial Allocation)

50% Buffer

Spatial Join (Point Aggregation)

Vector > Data Management Tools > Join attributes by location

Join Deaths to Voronoi as shapefile for attribute types

Summary Statistics

Install Group Stats

Columns = States Rows = Labels Value = Num_Cases

Show sorting and export

Basic Measures of Spatial Central Tendency

Spatial Mean (Mean Center)

Basic, weighted and cased

Standard Distance

Search for point pattern Analysis and run on

Creating a surface from Point Data to Highlight “Hotspots”

Kernel Density (Currently problematic)

Note: Project your DeathAddresses data to the EPSG:32630 UTM coordinate system, before running the next steps. Some changes have been made to the QGIS interface and how it interacts with some of the processing libraries included

Use built in tools