Zschimmer, Andreas J.Roberts, Jonathan C.Ik Soo Lim and David Duce2014-01-312014-01-312007978-3-905673-63-0https://doi.org/10.2312/LocalChapterEvents/TPCG/TPCG07/115-122This paper presents a novel image caching strategy implemented for our bifocal radial visualization for Intranet search visualization. This visualization displays search results by combining hierarchical information with focus+ context. It is designed specifically for domain or Intranet searches, where specific search results are overlaid (highlighted) on top of a hierarchical circular visualization, which enables these results to be viewed in context with the whole dataset. Drawing large hierarchies is time-consuming, hence the main visualization is cached in a unique way to provide interactive visualization and manipulation. The caching is complicated by the use of the bifocal distortion where a portion of the visualization is magnified, thus two sets of images are cached. This paper describes the caching technique in detail.Categories and Subject Descriptors (according to ACM CCS): H.5.2 [Information Interfaces and Presentation]: User Interfaces; I.7.4 [Computing Methodologies]: Document and Text ProcessingElectronic Publishing