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A bar chart or bar graph is a chart or graph that presents categorical data with rectangular bars with heights or lengths proportional to the values that they represent. The bars can be plotted vertically or horizontally. A vertical bar chart is sometimes called a column chart . A bar graph shows comparisons among discrete categories.
In graph theory, graph coloring is a special case of graph labeling; it is an assignment of labels traditionally called "colors" to elements of a graph subject to certain constraints. In its simplest form, it is a way of coloring the vertices of a graph such that no two adjacent vertices are of the same color; this is called a vertex coloring .
There are only so many ways one can juice up boring Excel data, but Microsoft's new Power Map Preview for Office 365 looks like it's up to the challenge. The 3D map visualizer has just graduated ...
The general idea here is to make Excel smart enough to understand some of your entries and offer you additional information. For now, this applies to geographical data like the names of cities ...
The formation of a color histogram is rather simple. From the definition above, we can simply count the number of pixels for each 256 scales in each of the 3 RGB channel, and plot them on 3 individual bar graphs. In general, a color histogram is based on a certain color space, such as RGB or HSV.
In a SMPTE color bar image, the top two-thirds of the television picture contain seven vertical bars of 75% intensity. In order from left to right, the colors are white or gray, yellow, cyan, green, magenta, red, and blue. [ 18] The choice of white or gray depends on whether that bar's luminance is 100% or not.
A Gantt chart is a type of bar chart [ 4][ 5] that illustrates a project schedule. [ 6] This chart lists the tasks to be performed on the vertical axis, and time intervals on the horizontal axis. [ 4][ 7] The width of the horizontal bars in the graph shows the duration of each activity. [ 7][ 8] Gantt charts illustrate the start and finish ...
Domain coloring plot of the function f(x) = ( x2 − 1) ( x − 2 − i) 2 x2 + 2 + 2 i, using the structured color function described below. In complex analysis, domain coloring or a color wheel graph is a technique for visualizing complex functions by assigning a color to each point of the complex plane. By assigning points on the ...