PyQtGraph – Getting Data Bounds of the Line in Line Graph
In this article we will see how we can get data bounds of the line of line 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.) A line chart or line plot or line graph or curve chart is a type of chart which displays information as a series of data points called ‘markers’ connected by straight line segments. It is a basic type of chart common in many fields. Line graph is created with the help of plot class in PyQtGraph. Data bounds is the range occupied by the line in x-axis or y-axis.
We can create a plot window and create lines on it with the help of commands given below
# creating a pyqtgraph plot window plt = pg.plot() # plotting line in green color # with dot symbol as x, not a mandatory field line = plt.plot(x, y, pen='g', symbol='x', symbolPen='g', symbolBrush=0.2, name='green')
In order to do this we use dataBounds method with the line object
Syntax : line.dataBounds(0)
Argument : It takes integer i.e 0 for x-axis and 1 for y-axis as argument
Return : It returns tuple
Below is the implementation
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