PPOL670 | Introduction to Data Science for Public Policy Week 7 Introduction to Geospatial Data

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# PPOL670 | Introduction to Data Science for Public Policy Week 7 Introduction to Geospatial Data 
###  Prof. Eric Dunford  ◆  Georgetown University  ◆  McCourt School of Public Policy  ◆  <a href="mailto:eric.dunford@georgetown.edu" class="email">eric.dunford@georgetown.edu</a>

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PPOL670 | Introduction to Data Science for Public Policy

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Week 7

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Introduction to Geospatial Data

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## Vector Data Model

<img src="week-07-introduction-to-geospatial_files/figure-html/unnamed-chunk-1-1.png" style="display: block; margin: auto;" />
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## Vector Data Model

![:center_img 70](figures/pnt_line_poly.png)

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## Vector Data Model

![:center_img 70](figures/vector_lonlat.png)

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## Simple Features

![:center_img 70](figures/sf-classes.png)

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## Raster Data Model

![:center_img 100](figures/temp_map.png)

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## Raster Data Model

![:center_img 100](figures/raster-intro-plot-1.png)

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## Raster Data Model

![:center_img 100](figures/raster-data-2.png)
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## Raster Data Model

![:center_img 100](figures/raster_resolution.png)

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## Projections

![:center_img 75](figures/world-orthographic-1.png)

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## Mercator Projection

![:center_img 75](figures/world-mercator-1.png)

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## Goode Homolosine Projection

![:space 10]
![:center_img 100](figures/world-goode-1.png)

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## WSG Projection

![:center_img 100](figures/wsg_projection.png)

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## Mollweide Projection

![:center_img 100](figures/mollweide_projection.png)

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## Layers

![:center_img 80](figures/sfbay-overview-1.png)

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## Layers

![:center_img 80](figures/sfbay-layers-1.png)