GIS Dictionary

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shield

[symbology] A map symbol that serves as a route marker. Shields come in many varieties, but the most common shields […]

short-range variation

[spatial statistics use for geostatistics] In a spatial model, fine-scale variation that is usually modeled as spatially-dependent random variation.

shortest path

1 [network analysis] The best route or the route of least impedance between two or more points, taking into account

side offset

[geocoding] An adjustable value that dictates how far away from either the left or right side of a line feature

side-shot course

[ESRI software] In Survey Analyst, used to compute a coordinate that is not a part of the main traverse course

signal

1 [remote sensing] Information conveyed via an electric current or electromagnetic wave. 2 [physics] The modulation of an electric current,

signal-to-noise ratio

[remote sensing] The ratio of the information content of a signal to its noninformation content (noise).

significance level

[statistics] In statistical testing, the probability of an incorrect rejection of the null hypotheses.

sill

[spatial statistics use for geostatistics] A parameter of a variogram or semivariogram model that represents a value that the variogram

simple edge feature

[ESRI software] In a geodatabase, a line feature that corresponds to a single network element in the logical network.

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