A bar chart is a graphical representation of data in the form of vertical or horizontal rectangles. It is common for bar charts to also be referred to as bar graphs and column (i.e., vertical) bar charts. Bar charts utilize the X axis, Y axis, data types, and quantities to specify information.
Some cite William Playfair as the father of bar charts. Others note that Nicole Oresme published an image of a bar chart first. Bar charts were created and used for the purpose of graphically representing and explaining data. They were also employed to present datasets of substantial size in a clear way that could be easily and quickly digested. The concepts and data that people use them to present are very old. One of the most common instruments of physics, one of the world's oldest disciplines, is graphical representation. Evidence can be found across cultures, and throughout the world, of people attempting to articulate, simplify, and explain physics utilizing something which is a bar chart or can be described as one.
In a bar chart, one axis represents specified categories and the other axis represents values. Bar charts can also be used to present complex data. The rectangles may be placed above, below, or on either side of an axis. This can be employed to show a wider range of values. Bar charts can utilize groups of multiple bars. This can be used to increase the depth of data type information. They can also be color-coded, which can improve clarity in complex charts and allow for more depth. Another option is a 3-dimensional bar chart, which can expand the scope of a chart without overloading the image with data.
Bar charts are simple to create, interesting to experiment with, and very powerful tools. A wide selection of tools are available for creating bar charts: chart software, art software, websites, and simple graphics software. Some options offer a way to create virtually any type of bar chart, and will also walk you through the process. Others require more familiarity with the software to produce stunning charts. If your needs are modest, a simple paint application may suffice.