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GISP General questions and answers rated A+ 2024/2025
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GISP General questions and answers rated A+ 2024/2025
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GISP GeneralScanning a map document to JPG format - ANSAn example of analog-to-digital conversion
Curve, point, surface - ANSComponents of the OGC geometry object model
Topology - ANSMost effective method for maintaining data quality to ensure that no line features
of a
stream center line layer intersect the polygon feature of a land cover layer
90% - ANSAccording to National Map Accuracy Standards, what percentage of features must
be within 1/30 of an inch or less from their intended horizontal accuracy on maps with scales of
1:20,000 or larger?
Quad trees - ANSA compression technique for raster data that subdivides data into quarters
and data structures based on the successive reduction of homogeneous cells. Reduces raster
storage requirements. It also is dependent on the complexity of the feature and the resolution of
the smallest grid cell.
Run Length Encoding - ANSA compression algorithm for raster data that represents an image in
terms of the length of runs of identical pixels. A very simple form of lossless data compression in
which runs of data (that is, sequences in which the same data value occurs in many consecutive
data elements) are stored as a single data value and count, rather than as the original run.
Euclidean distance - ANSThe straight-line distance, or shortest possible path, between two
points
Euclidean Distance Formula (2D) - ANSsqrt[(X2-X1)^2+(Y2-Y1)^2)]
Manhattan Distance Formula - ANS|X1-X2| + |Y1-Y2|
Equals - ANSa=b or a ∩ b = a) ∧ (a ∩ b = b)
Intersects - ANSa ∩ b ≠ ∅
Disjoint - ANSa ∩ b = ∅
Touches - ANS(a ∩ b ≠ ∅) ∧ (aο ∩ bο = ∅)
Contains - ANSa ∩ b = b
Covers - ANSa* ∩ b = b or Every point of b is a point of (the interior of) a
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