ParallelizeHeatmap. Parallelize Heatmap Visualization using Spark. 尝试着用Apache Spark来处理数据，来绘制图像（heatmap，热力图），结果是有的，但是觉得这样的代码违反了使用Apache Spark的初衷，特别是数据点的分配使用了collect()算子，以后有待改进。

Problem

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Audience

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Market

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Pricing

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