44 lines
1.5 KiB
Markdown
44 lines
1.5 KiB
Markdown
# Histogram (Ada version)
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**What is a histogram?**
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* A visual representation that charts the <ins>frequency distribution</ins> of the regularity of an occurrence of a value in a <ins>data set</ins>.
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* Often confused with a bar chart, although there are certain defining characteristics or points of differentiation.
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* The x-axis consists of equal width bars without space in between, known as <ins>bins</ins> or buckets that represent a <ins>range of classes</ins>.
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* x axis is the <ins>class interval</ins> and is identified with a number rather than a description or label.
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* The y axis represents the <ins>frequency</ins> of occurrence of a value.
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* Bar graphs represents data that is discrete or categorical in nature
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**Uses**
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* In statistics to show the frequency of a specific value within a certain range.
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* Used to analyse large amounts of data easily to detect trends and patterns.
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## Change-log:
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* 19/04/2023 - Initial release
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* 13/04/2023 - Foundation code
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## Compilation
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type the following commands:
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`gcc -c histogram.adb`
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`gnatbind histogram`
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`gnatlink histogram`
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## Misc.
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* I have included both uniform and gaussian (normal) distribution data files.
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* Gnuplot or some equivelant application is required to graph the histogram data.
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* I find `gnuplot` then `plot 'dist3.dat' using 1:2 smooth freq w boxes` works well (see png file for sample output).
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## Todo
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* Need to use SDL2 to implement internal plotting routine.
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* pretty sure bugs have been ironed out.
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## Author(s)
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Jason Bou-Samra
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