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28 Jan 2019 In this photography tutorial, learn how to read a histogram so that you can properly expose your photos. With a scale from 0-255, become aMatplotlib can be used to create histograms. A histogram shows the frequency on the vertical axis and the horizontal axis is another dimension. Usually it has 20 Jul 2017 Histograms are graphs of a distribution of data designed to show centering, dispersion (spread), and shape (relative frequency) of the data. The following is a 4 Feb 2015 15 Dec 2018 A histogram is a chart that shows the frequency distribution of a variable. Histograms tell you basically all you need to know about your data. It is similar to a Bar Chart, but a histogram groups numbers into ranges . The height of each bar shows how many fall into each range. And you decide what 1 Mar 2013 The histogram is a useful but often misunderstood tool that your camera .. in detail is for example: www.guillermoluijk.com/tutorial/uniwb/index_en.htm