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GIS Data Capture: Getting the Map into the Computer some background and extra material in Chapter 9, Longley et al

GIS Data Capture: Getting the Map into the Computer some background and extra material in Chapter 9, Longley et al

GIS Data Capture: Getting the Map into the Computer some background and extra material in Chapter 9, Longley et al. Overview. Introduction Primary data capture Secondary data capture Data transfer Capturing attribute data Managing a data capture project Error and accuracy. Data Collection.

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792 views • 39 slides
Geographic Information Systems

Geographic Information Systems

Geographic Information Systems. Data Quality . 1. Necessity. Practical issues Legal issues Theoretical issues. Necessity . Accuracy - A measure of how closely data match the true value or descriptions Precision - A measure of how exactly data are measured and stored. Necessity .

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541 views • 31 slides
Map Generalization

Map Generalization

Map Generalization. Introduction Concepts conventional cartography geographic information systems Developments conceptual models algorithms knowledge representation. Image Processing Division. Introduction. Data presentation display communication Data integration

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1.24k views • 20 slides
Attribute Accuracy

Attribute Accuracy

Attribute Accuracy. February 15, 2006 Geog 458: Map Sources and Errors. Please note overlaps between positional accuracy and attribute accuracy Accuracy = discrepancy between measured value and true value Location value or Attribute value Components of errors: bias, precision, RMSE

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640 views • 19 slides

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