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cross track distance
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README.md

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Each section will make use of plotting to visually demonstrate concepts with `matplotlib` and `cartopy`
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### Working with Great Circles
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1. Great Circle Arcs and Paths
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- Generating a great circle arc and path
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- Midpoint (and additional intermediate points) of a great circle arc
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- Length of a great circle arc (the distance between two points)
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- Bearing of a great circle arc
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- Compare great circle arc to rhumb line
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- Determine when a great circle path crosses parallels
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2. Great Circles and a Point
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- Determine the distance of a point to a great circle arc
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- Determine the distance of a point to a great circle path
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- Determine if a point lies on a great circle arc and path (with and without tolerances)
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- Determine the distance of a point to a great circle arc with error analysis
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3. Great Circles and Parallels
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- Determine the maximum and minimum latitude coordinates along a great circle path
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- Determine when a great circle path crosses parallels
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4. Intersections of Great Circles
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- Find the intersection of two great circle arcs (if it exists)
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- Find the intersection of two great circle paths (always exists)
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5. Angles and Great Cirlces
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- Calculate the acute and obtuse angle of two great circle paths
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- Calculate the directed angle of two great circle paths based on an intersection point
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- Working with Spherical Triangles formed by great circle arcs
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- Indiana Jones and the Great Circle
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6. Indiana Jones and the Great Circle
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- Working Example
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## Running the Notebooks
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notebooks/tutorials/great_circle_arc_path.ipynb

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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# Great Circle Arc and Path"
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"# Great Circle Arcs and Path"
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]
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},
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{

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