Intro to Raster Data


Figure 1

Raster plot with ggplot2 using the viridis color scale
Raster plot with ggplot2 using the viridis color scale

Figure 2

Raster plot with ggplot2 using the viridis color scale
Raster plot with ggplot2 using the viridis color scale

Figure 3

Raster plot with ggplot2 using the viridis color scale on the original CRS
Raster plot with ggplot2 using the viridis color scale on the original CRS

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Figure 5

UTM zones in the USA.
The UTM zones across the continental United States. From: https://upload.wikimedia.org/wikipedia/commons/8/8d/Utm-zones-USA.svg

Figure 6

Multi-band raster image

Figure 7

Raster plot showing location of extreme values
Raster plot showing location of extreme values

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Plot Raster Data


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Open and Plot Vector Layers


Figure 1

Extent image

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Explore and Plot by Vector Layer Attributes


Figure 1

Map of the large beds in the study area.
Map of the large beds in the study area.

Figure 2

Map of the large beds where they are classified by percent cover.
Map of the large beds where they are classified by percent cover.

Figure 3

Map of the boardwalks in the study area.
Map of the boardwalks in the study area.

Figure 4


Figure 5

Map of the dense seagrass beds where beds are colored by size in hectares.
Map of the dense seagrass beds where beds are colored by size in hectares.

Figure 6

Roads and trails in the area.
Roads and trails in the area.

Figure 7


Figure 8

Map of the beds in the 2022 area with large-font and border around the legend.
Map of the beds in the 2022 area with large-font and border around the legend.

Figure 9

2013 Seagrass Beds in Casco Bay.
2013 Seagrass Beds in Casco Bay.

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Plot Multiple Vector Layers


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Handling Spatial Projection & CRS


Figure 1

Maps of the United States using data in different projections. Source: opennews.org, from: https://media.opennews.org/cache/06/37/0637aa2541b31f526ad44f7cb2db7b6c.jpg
Maps of the United States using data in different projections. Source: opennews.org, from: https://media.opennews.org/cache/06/37/0637aa2541b31f526ad44f7cb2db7b6c.jpg

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Convert from .csv to a Vector Layer


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Extracting Data from Rasters using Vectors


Figure 1

Extent illustration Image Source: National Ecological Observatory Network (NEON)


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Figure 7

Image shows raster information extraction using 20m polygon boundary. Image Source: National Ecological Observatory Network (NEON)


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Image shows raster information extraction using 20m buffer region. Image Source: National Ecological Observatory Network (NEON)


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Work with Multi-Band Rasters


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Image Stretch

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Image Stretch light

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Raster Calculations


Figure 1

the visible spectrum in nm
the visible spectrum in nm

Figure 2

chl eqn
chl eqn

Figure 3

CARI eqn Let’s see how simple it is to make these work for us!


Figure 4

New Hampshire and Southern Maine in Winter 2023
New Hampshire and Southern Maine in Winter 2023

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