It is important to understand how these plots are constructed. A two-dimensional grid of X and Z is constructed. The range of this grid is equal to the range of the data. Next, a Y value is calculated for each grid point. This Y value is a weighted average of all data values that are “near” this grid point. (The number of points averaged is specified by the user.) The three-dimensional surface is constructed using these averaged values. Hence, the surface plot does not show the variation at each grid point.
{"title":"3D Surface Plots","authors":"A. Mander","doi":"10.4135/9781529772678","DOIUrl":"https://doi.org/10.4135/9781529772678","url":null,"abstract":"It is important to understand how these plots are constructed. A two-dimensional grid of X and Z is constructed. The range of this grid is equal to the range of the data. Next, a Y value is calculated for each grid point. This Y value is a weighted average of all data values that are “near” this grid point. (The number of points averaged is specified by the user.) The three-dimensional surface is constructed using these averaged values. Hence, the surface plot does not show the variation at each grid point.","PeriodicalId":21830,"journal":{"name":"Stata Technical Bulletin","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86863440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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