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	Provedor de dados AgEcon (1) Rev. Bras. Ciênc. Solo (1) Autor Caten,Alexandre ten (1) Dalmolin,Ricardo Simão Diniz (1) Pisati, Maurizio (1) Ruiz,Luis Fernando Chimelo (1) Palavra-chave Choropleth map (2) Decision tree (1) Deviation map (1) Dot map (1) Label map (1) Pedometrics (1) Proportional symbol map (1) Research Methods/ Statistical Methods (1) Soil survey (1) Thematic map (1) Tmap choropleth (1) Tmap deviation (1) Tmap dot (1) Tmap label (1) Tmap propsymbol (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Journal Article (1) Ano 2012 (1) 2004 (1) País Brazil (1) United States (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Digital soil mapping: strategy for data pre-processing Rev. Bras. Ciênc. Solo Caten,Alexandre ten; Dalmolin,Ricardo Simão Diniz; Ruiz,Luis Fernando Chimelo. The region of greatest variability on soil maps is along the edge of their polygons, causing disagreement among pedologists about the appropriate description of soil classes at these locations. The objective of this work was to propose a strategy for data pre-processing applied to digital soil mapping (DSM). Soil polygons on a training map were shrunk by 100 and 160 m. This strategy prevented the use of covariates located near the edge of the soil classes for the Decision Tree (DT) models. Three DT models derived from eight predictive covariates, related to relief and organism factors sampled on the original polygons of a soil map and on polygons shrunk by 100 and 160 m were used to predict soil classes. The DT model derived from observations 160 m away... Tipo: Info:eu-repo/semantics/article Palavras-chave: Choropleth map; Pedometrics; Soil survey; Decision tree. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000400003 Simple thematic mapping AgEcon Pisati, Maurizio. Thematic maps illustrate the spatial distribution of one or more variables of interest within a given geographic unit. In a sense, a thematic map is the spatial analyst’s equivalent to the scatterplot in nonspatial analysis. This paper presents the tmap package, a set of Stata programs designed to draw five kinds of thematic maps: choropleth, proportional symbol, deviation, dot, and label maps. The first three kinds of maps are intended to depict area data, the fourth is suitable for representing point data, and the fifth can be used to show data of both types. Tipo: Journal Article Palavras-chave: Tmap choropleth; Tmap propsymbol; Tmap deviation; Tmap dot; Tmap label; Thematic map; Choropleth map; Proportional symbol map; Deviation map; Dot map; Label map; Research Methods/ Statistical Methods. Ano: 2004 URL: http://purl.umn.edu/116257 Registros recuperados: 2 Primeira ... 1 ... Última

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