Multiresolution multidimensional wavelet brushing

Brushing is a data visualization technique that identifies and highlights data subsets. We introduce a form of brushing in which the brushed data is usually displayed at a different resolution than the non brushed data. The paper presents the rationale behind the multiresolution support of multivariate data visualization and describes the construction of multiresolution brushing using wavelet approximations. The idea is implemented in an enhanced version of XmdvTool. Real scientific data is used for demonstration and practical applications are suggested.