Variowin : Software for Spatial Data Analysis in 2D

Yvan Pannatier

ISBN 10: 1461275253 / ISBN 13: 9781461275251

Edité par Springer New York, Springer US, 2013

A propos de cet article

Druck auf Anfrage Neuware - Printed after ordering - 1.1 Overview V ARIOWIN 2.2 is a collection of four Windows programs - Prevar2D, Vari02D with PCF, Model, and Grid Display - that are used for spatial data analysis and variogram modeling of irregularly spaced data in two dimensions. Prevar2D builds a pair comparison file (PCF), that is, a binary file containing pairs of data sorted in terms of increasing distance. Pair comparison files can be built from subsets in order to reduce memory requirements. Vari02D with PCF is used for spatial data analysis of 2D data. It uses an ASCII data file and a binary pair comparison file produced by Prevar2D. Features implemented in Vari02D with PCF include: the possibility to characterize the spatial continuity of one variable or the joined spatial continuity of two variables, variogram surfaces for identifying directions of anisotropies, directional variograms calculated along any direction, several measures of spatial continuity. Not only the variogram but also the standardized variogram, the covariance, the correlogram, and the madogram are used to measure spatial continuity. h-scatterplots to assess the meaning of these measures, the identification and localization of pairs of data adversely affecting the measure of spatial continuity. Once identified, these pairs can be masked from the calculation interactively. variogram clouds for identifying pairs of data values having the most influence on the measure of spatial continuity. Those pairs can also be located on the sample map.

N° de réf. du vendeur 9781461275251

Détails bibliographiques

• Titre: Variowin : Software for Spatial Data Analysis in 2D
• Éditeur: Springer New York, Springer US
• Date de parution: 2013
• Langue: anglais
• ISBN à 10 chiffres: 1461275253
• ISBN à 13 chiffres: 9781461275251
• Reliure: Taschenbuch
• État de l'article: Neu

A propos de ce titre

Synopsis

1.1 Overview V ARIOWIN 2.2 is a collection of four Windows™ programs - Prevar2D, Vari02D with PCF, Model, and Grid Display - that are used for spatial data analysis and variogram modeling of irregularly spaced data in two dimensions. Prevar2D builds a pair comparison file (PCF), that is, a binary file containing pairs of data sorted in terms of increasing distance. Pair comparison files can be built from subsets in order to reduce memory requirements. Vari02D with PCF is used for spatial data analysis of 2D data. It uses an ASCII data file and a binary pair comparison file produced by Prevar2D. Features implemented in Vari02D with PCF include: • the possibility to characterize the spatial continuity of one variable or the joined spatial continuity of two variables, • variogram surfaces for identifying directions of anisotropies, • directional variograms calculated along any direction, • several measures of spatial continuity. Not only the variogram but also the standardized variogram, the covariance, the correlogram, and the madogram are used to measure spatial continuity. • h-scatterplots to assess the meaning of these measures, • the identification and localization of pairs of data adversely affecting the measure of spatial continuity. Once identified, these pairs can be masked from the calculation interactively. • variogram clouds for identifying pairs of data values having the most influence on the measure of spatial continuity. Those pairs can also be located on the sample map.