Coordinate
A coordinate is a numerical value or ordered set of values specifying a position relative to a coordinate system.
Advanced Algorithms and Data Structures
A coordinate is a numerical component that specifies a point's position along one dimension of a coordinate system.
- How it is used
- Uses coordinates to partition multidimensional points for k-d tree indexing and nearest-neighbor search.
- How deep it goes
- Defines comparable coordinate tuples and develops level-dependent comparisons, including their effect on finding minima during deletion.
- Examples
- Illustrates x-only partition failures, alternating vertical and horizontal splits, and coordinate-specific minimum searches.
- What you can do after
- Build it from scratch by selecting the split coordinate at each k-d tree level and recognizing why deletion needs coordinate-specific minima.
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Math for Web Design
A numerical value or set of values that specifies a point's position relative to a coordinate system's origin.
- How it is used
- Locates pointers, elements, canvas points, and animated objects for web UI calculations.
- How deep it goes
- Defines 2D and simulated depth coordinates, then works through viewport-to-element conversion and normalized click positions.
- Examples
- Uses canvas drawing, circular layouts, a gradient color picker, and a depth-based animated star field.
- What you can do after
- Apply it via JavaScript events and getBoundingClientRect() to calculate local pointer positions and normalized UI values.
How Computers Make Books
A coordinate is a numerical value that identifies a position relative to a specified reference system.
- How it is used
- Locates ink, pixels, lines, and page contents relative to a chosen origin.
- How deep it goes
- Defines Cartesian pairs, origins, units, and endpoint-based line and shape construction, while deferring curved letterforms.
- Examples
- Uses a plotted (6, 2) point, an A4 page heading, a line from (1, 1) to (6, 3), and a coordinate-drawn house.
- What you can do after
- Practice/perform coordinate plotting, line definition, and pixel selection on 20 × 20 grids.
Digital Twins in Action
A 2D coordinate is an ordered pair of values specifying a position in a two-dimensional coordinate space.
- How it is used
- Locates sensors and assets for proximity searches and for placing readings on geolocated models.
- How deep it goes
- Works through local origins, matrix-based rotation and translation, library conversion, and 2D distance; notes when height may be needed.
- Examples
- Uses a rotated floor plan mapped to UTM coordinates, a PyProj conversion, and a home-sensor proximity search.
- What you can do after
- Build it from scratch with a rotation-and-translation matrix, or apply PyProj to convert UTM coordinates to WGS84.
Get Programming: Learn to code with Python
A coordinate is a numerical value specifying a position along an axis in a coordinate system.
- How it is used
- Uses coordinates to place and move rectangular player pieces on a Tkinter canvas.
- How deep it goes
- Explains corner coordinates, random initialization, and directional updates, without developing broader coordinate-system theory.
- Examples
- Demonstrates randomly positioned player squares and moves them with keyboard-controlled directional commands.
- What you can do after
- Build it from scratch by representing canvas rectangles with corner coordinates and updating their positions.
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Related concepts
- polygon()used by · The CSS polygon() basic-shape function defines a closed clipping or wrapping shape from a sequence of points.
- hit testingused by · Hit testing is the process of determining whether a point or pointer location lies within a graphical object's boundaries or region.
- coordinate changeused by · A coordinate change transforms points or data from one coordinate system or reference frame into another while preserving the represented relationships.
- Math.cosused by · Math.cos is the JavaScript Math API method that returns the cosine of an angle expressed in radians.
- polar coordinatecontrasts with · A polar coordinate specifies a point in two-dimensional space by its distance from an origin and its angle relative to a reference direction.
- math.sinused by · Math.sin is a JavaScript Math method that returns the sine of an angle expressed in radians.
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