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all notes after midterm PrinciplesGIS FINAL

# all notes after midterm PrinciplesGIS FINAL - eCh 4 1 All...

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eCh 4 1. All geographic phenomena vary smoothly over space. (NO! Some do while others exhibit irregularity, in violation of Toblers law Answer True False 2. If features that are similar in location are also similar in attributes, then the pattern as a whole is said to exhibit spatial autocorrelation . Conversely, spatial autocorrelation is said to exist when features which are close together in space tend to be more dissimilar in attributes than features which are further apart. 3. Where the events or phenomena of a study are found to be spatially homogenous , we will require a large sample to capture the full variability of attribute values at all locations. FALSE!! Answer is spatially heterogeneous 4. reasons from data to build up understanding, while begins with a theory and principle as a basis for looking at data. 5. In a self-similar object, each part has the same nature as the whole. 6. As the path of a coastline traverses space, its intricate structure comes to fill up more space than a one- dimensional straight line but less space than a two-dimensional area. As such, it is said to be of fractional dimension (and is termed a ) between 1 (a line) and 2 (an area). Match the 3 key aspects of resolution with their definitions: Answer Spatial Spectral Temporal Answer A. The parts of the electromagnetic spectrum measured B. The size of objects that can be resolved and the most usual measure is pixel size C. The frequency with which images are collected for the same area Ground is based on the principle that the 3-D location of any point can be determined by measuring and from other known points. Which form of digitizing uses a 'puck'? Answer

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Table (Manual) Digitizing Heads-Up Digitizing Match the following common errors with their definitions: Answer Overshoots & Undershoots Invalid Polygons Sliver Polygons Answer A. Topologically inconsistent because of omission of one or more lines, or omission of tag data B. Multiple digitizing of the common boundary between adjacent polygons leads to the creation of additional polygons. C. Where line intersections are inexact. COGO, a contraction of the term , is a methodology for capturing and representing geographic data. COGO uses survey- style and to define each part of an object. Match the 'Four Principle Purposes Of Geovisualization' with their descriptions Answer D Exploration C Synthesis A Presentation B Analysis
Answer A. To communicate the over representation in a readily manner, and to enable the understand the likely ove representation. B. To provide a medium to support a range of methods and technique analysis. C. To present the range, complexity, and detail of one or more dataset be readily assimilated by users. Good geovisualization should enab the wood for the trees'.

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