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...Datavisualization principles and practice nd edition exercises for chapter vector visualization exercise consider a scalar eld f x y r the gradient is so we can compute its vorticity v rot what value of hints usethedenitionsofthegradientandvorticitybasedonpartialderivativesof now d di vergenceeldd div rotv whatisthevalueofd usethedenitionsofdivergenceandvorticitybasedonpartialderivativesofafunction twovariables considerthefollowingthreedvectorelds pageof chapterexercises z plot these three elds using hedgehog glyphs oriented arrows square domain centeredattheoriginandembeddedinthexy plane thesameonesasforexercise whichofthesethreeeldshasazerocurl whichhasazerodivergence argueyouranswer bycomputingtheactualdivergenceandcurlvalues considered to be in general more challenging problem than indeed intuitively speaking sampled dataset say n points would have values whereas show nowthecaseofvisualizingascalareldwith samplesvs visualizing with samples both need store same amount data i e which...