In this article we will see how we can get bounding region granularity of the error bar graph in the PyQtGraph module. PyQtGraph is a graphics and user interface library for Python that provides functionality commonly required in designing and science applications. Its primary goals are to provide fast, interactive graphics for displaying data (plots, video, etc.). Error bars are graphical representations of the variability of data and used on graphs to indicate the error or uncertainty in a reported measurement. They give a general idea of how precise a measurement is, or conversely, how far from the reported value the true value might be. Position of error bar item is basically the position of the data from origin which is by default 0, 0 although it can be changed any time. Granularity, the condition of existing in granules or grains, refers to the extent to which a material or system is composed of distinguishable pieces. It can be set with the help of setBoundingRegionGranularity method.
We can create a plot window and create error bar graph on it with the help of commands given below
# creating a pyqtgraph plot window plt = pg.plot() # creating a error bar item object error = pg.ErrorBarItem(x=x, y=y, top=top, bottom=bottom, beam=0.5)
In order to do this we use boundingRegionGranularity method with the error bar item object
Syntax : error.boundingRegionGranularity()
Argument : It takes no argument
Return : It returns float value
Below is the implementation
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