6/21/2023 0 Comments Raster x![]() ![]() GCPs may also be present in the geometry of a raster. ![]() The rotation point is the top left corner of the top left cell of the raster. Note that a different rotation from the x and y axes produces a shear. The y rotation is the angle in radians as measured in a counterclockwise direction from the negative y axis. The x rotation is the angle in radians as measured in a counterclockwise direction from the positive x axis. Rotation is used to represent rasters that are not aligned with the x and y axes. The minimum x and maximum y values that comprise the upper left corner of the raster extents are equivalent to the raster origin. This is sometimes referred to as cell bounded. A cell origin of 0.5 in x and 0.5 in y would put the data point for each cell in the center of the cell, which is the default representation in FME.Įxtents or bounds for a raster are represented by the lower left ground coordinate and the upper right coordinate covered by the raster data. The lower left corner of the cell in the x or y dimension is 0.0, while the upper right corner is 1.0. ![]() Specifically, the raster origin in FME is the upper left corner of the upper left cell in the raster.Ĭell origin is the point within each cell of a raster from which the pixel for that cell is derived. The raster origin is the upper left x and y of the raster at which the coverage of the data sample begins. Some formats store only one spacing value, meaning that it must be the same for both the x and y dimensions – this is often referred to as square cells. Spacing or cell size is the fixed distance in the x and y dimensions between each pixel in the raster.
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