axis
[coordinate systems] A line along which measurements are made in order to determine the coordinates of a location.
Apache Axis is an open source, XML based Web service framework. It consists of a Java and a C++ implementation of the SOAP server, and various utilities and APIs for generating and deploying Web service applications.
Axis A reference line in a coordinate system.
B
Band One layer of a multispectral image representing data values for a specific range of the electromagnetic spectrum of reflected light or heat.
axis The line formed by the intersection of the axial plane of a fold with a bedding plane, marking where the bed shows its maximum curvature.
Axis properties
Axis properties are automatically defined by ArcMap. However, these properties can be changed: ...
Y-axis, Younger-Dryas,
Zonal
Study Questions, Problems, and Exercises ...
Axis
The earth’s axis is a 7,899.8-mile (12,713.5-km) long straight line from the North Pole through the Center of the earth to the South Pole.
The axis that the earth rotates around is tilted relative to the sun at an angle of 23.5 degrees. If there was no tilt, there'd be no seasonal changes here in Canada. We'd pretty much have the same season all year.
The axis of Earth is tilted 23.5° from the plane of the ecliptic (in which is embedded its rotational path without any upward/downward motion during an annual cycle. This as we shall see shortly is the key to the changing seasons.
Dual Axis Fourier Shape Analysis
DAFIF
Digital Aeronautical Flight Information Files (NGA) ...
Given one axis and any one of the other three parameters, the other two can be derived. Typical values of the parameters for an ellipsoid are:
a = 6378135.00m b = 6356750.52m
f = 1/298.26 e = 0.08181881066 ...
The Earth's axis of rotation - and hence the position of the North Pole - was commonly believed to be fixed until, in the 18th century, the mathematician Leonhard Euler predicted that the axis might "wobble" slightly.
We have seen how when we want to move someting in a vertical direction, Sketchup can infer from our movements that we want to move along the Blue Axis.
a semi-major axis (a)
in Earth's case this aligned with the Equator
it is the distance from the equator to the centre of the Earth
a semi-minor axis (b) ...
The optical axis of the plummet is aligned with the vertical axis of the target (or instrument) if the crosshairs of the optical plummet stay superimposed on the center of the mark when the tribrach is revolved through 180�.
The first canonical axis separated the levee from the deep backwater, and the second canonical axis separated the low organic matter soils from high organic matter soils.
60 three dimensional object formed by rotating an ellipse around its minor axis; an oblate ellipsoid approximates the shape of the Earth (geoid), computed by the best fit to geodetic observations. See Table 3-2 p. 76 equal interval p.
Axis A reference line in a coordinate system.
Azimuth A compass direction, measured clockwise from north (0) through South (180) and on to North again (360)
B ...
The body frame axes Xb and Yb are collinear to the scanning plane with the Xb axis in the direction of the zero scan angle and Yb axis perpendicular to it. Lines are extracted from scan images and applied to compute the navigation solution.
x_file=string Name of data file for X axis of graph y_file=string[,string,...] Name of data file(s) for Y axis of graph directory=string Path to file location Default: . y_color=string[,string,...
It is customary to plot stream stage on the y-axis of the plot and discharge on the x-axis. The resulting relationship is normally a curve.
This type of figure is termed an oblate ellipsoid or spheroid, and is the three-dimensional shape obtained by rotating an ellipse about its shorter axis.
A graticule is a spherical grid of coordinate lines over the planetary surface, comprising circles on planes normal (perpendicular) to the north-south axis, called parallels (red) and semicircular arcs with that axis as chord, ...
A reference spheroid or ellipsoid is a spheroid determined by revolving an ellipse about its shorter (polar) axis and used as a base for geodetic surveys of a large section of the Earth (such as the Clarke spheroid of 1866 which is used for geodetic ...
The X-axis of the graph corresponds to the Z-axis of the map-relative level of housing Density. In this case, the spikes in the graph indicate measurements that occur more frequently. Note the relatively high occurrence of density values around 2.
Without this stabilization, the rotational axis might be chaotically unstable, as it is with a sphere.
Two circles whose centers are on the real axis that intersect in two points have one point of intersection above the real axis and one below. Thus they have only one point of intersection in the upper half-plane.
The earth is an ellipsoid (sort of), which is the volume you get when you revolve an ellipse around its semi-major or semi-minor axis.
If gravity tilt loads are to be generated then the global Y axis must be set vertically upwards.
This system, which is aligned with the World Geodetic System 1984 (WGS 84) reference ellipsoid, has its origin close to the earth's centre of mass, its z axis parallel with the direction of the conventional terrestrial pole and its x axis passing ...
With conical and cylindrical projections, the axis of these shapes usually corresponds to the axis of the spheroid (Earth); the exception is the oblique case.
The values on the Y-axis are counts. Since they count cells, and each cell represents approximately the same area (because this grid covers a small area of the earth and uses a projection with relatively little distortion), ...
According to Snyder "the orientation (of the axis of the ellipse) is of much less interest than the size of the deformation.
As the earth rotates east-to-west about its axis, the height of the sun in the sky changes. The position of the sun in the sky determines ones local solar time. The moment at which the sun is highest in the sky corresponds to local solar noon.
When a vertical aerial photo is taken, the only point on the scene that is directly below the camera axis is called the ground principal point.
A spheroid is an ellipsoid having two axes of equal length, making it a surface of revolution. By convention, the two distinct axis lengths are denoted and , and the spheroid is oriented so that its axis of rotational symmetric is along the -axis, ...
Latitude is the angle measured from the earth's center north or south of a given point on the earth's surface - defined by geometric center of the earth's spin axis, the equator, lying at 000° latitude.
Now the cylinder's axis passes through the equator, and it can be rotated to line up with the area of interest.
A specified position in a three dimensional grid, where the first position relates to the X axis, the second position relates to the Y axis, and the third position relates to the Z axis.
Coordinate Tuple ...
The Chart Element Properties button allows the user to adjust various properties of the chart. This includes moving the legend and renaming the series in the legends, changing titles and axis labels, and modifying the scales of the x-axis and y-axis.
Yaw - Aircraft rotation around the vertical axis (NCRST).
Sources
Basic glossary from Geographic Information System, Remote Sensing, and Telemetry Working Group of The Wildlife Society (TWS) ...
A north/south measurement of position perpendicular to the earth's polar axis.
L-band
The group of radio frequencies extending from 390 MHz to 1550 MHz. The GPS carrier frequencies L1 (15735 MHz) and L2 (1227.6 MHz) are in the L-band.
this is the figure created by rotating an ellipse about its minor axis
the spheroid models the fact that the earth's diameter at the equator is greater than the distance between poles, by about 0.3% ...
Coordinate: Point whose location in space is expressed in terms of its distance above or below an X, a Y and a Z coordinate plane. Location of a point on a plane is expressed by two coordinate values, one representing the distance from the Y-axis ...
To determine the amount of vertical exaggeration used to construct a profile, simply divide the real-world units on the horizontal axis by the real-world units on the vertical axis.
True north Direction of the northern rotational axis of the earth - the North Pole.
Unclassified roads Roads for which the surface is unidentified.
A trained operator securely mounts the source map upon the digitizing tablet and, utilizing the cross hairs on the digitizing puck, traces the cross hair axis along each linear feature to be captured in the digital file.
Transverse - A class of map projection in which the axis of the map sheet is aligned in a pole-to-pole position rather than along the equator.
...
abscissa -- the coordinate of a point in a plane Cartesian coordinate system obtained by measuring parallel to the x-axis ("the 'x' value").
central meridian
A central meridian is a meridian that passes through the center of a projection. The central meridian is often a straight line that is an axis of symmetry of the projection.
...
where the vector c represents the center, the scalar r the radius of the function. For 2 dimensional case we can construct the function surface by rotating the bell-curve around its vertical axis (figure 5), ...
At the International Date Line, the west side of the line is always one day ahead of the east side, no matter what time of day it is when the line is crossed. This is because the Earth rotates east on its axis.
bounding box a set of 2, 4, 6 or 8 numbers indicating the upper and lower bounds of an interval (1D), rectangle (2D), parallelpiped (3D), or hypercube along each axis of a given CRS broker A kind of intermediary service whose responsibility ...
one attribute of a feature, with the same column representing the same attribute in each row. See also feature attribute table. azimuth The horizontal direction of a vector, measured clockwise in degrees of rotation from the positive y-axis, ...
 See also: Surface, Map, Area, Information, Model
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