The Histogram Dashboard is used to display how the statistical distribution of a Tensor varies overtime. It helps to visualize the data recorded via tf.summary.histogram. Each chart displays the temporal "slices" of data, where each slice is a histogram of the tensor at a given step. It is arranged with the oldest timestep in the back, and the most recent timestep in front.
If a Histogram mode is changed from "offset" to "overlay", the perspective will rotate. As a result, every histogram slice is rendered as a line and overlaid with one another.
