## 3. Geospatial Analysis

### 3.A Global, zonal and focal operations, map algebra

Outline:- global and zonal statistics, neighborhood, focal operations
- raster map algebra
- expressions, operators, functions and variables
- basic calculations, integer and floating point data
- "if" conditions, handling NULLs and creating masks

- raster map patching and overlay
- raster map reclassification and rescaling

#### Lecture

- Lecture Slides
- Lecture Global, Zonal, and Focal Statistics
- Lecture Map Algebra and Reclassification
- Lecture slides updated: Basic raster operations

#### Assignment part A

### 3.B Buffers, cost surfaces, least cost path

Outline:- measuring distance, proximity operators
- point, line, and area buffers
- cost surfaces, least cost path

#### Lecture

Slides and recorded video:

- Lecture Slides used in the video
- Lecture Slides with updates
- Lecture Measuring distance
- Lecture Buffers
- Lecture Cost surfaces

- Trail Planning, chapter from Petrasova et al., 2018, Tangible Modeling with Open Source GIS. Second edition. Springer. Available free through NCSU library.
- Additional material on least cost path analysis in both GRASS GIS and ArcGIS from Carleton University
- Firefighters escape route planning
- Learn more about fractals