In this article, we will see how we can set symbols of spots in the scatter plot graph of 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 scatter plot (aka scatter chart, scatter graph) uses dots to represent values for two different numeric variables. It is a type of plot or mathematical diagram using Cartesian coordinates to display values for typically two variables for a set of data. The position of each dot on the horizontal and vertical axis indicates values for an individual data point. Spots are the point plotted on the scatter plot, by default they are having round symbols although we can change it any time.
We can create a plot window and create a scatter plot graph on it with the help of commands given below.
# creating a pyqtgraph plot window plt = pg.plot() # creating a scatter plot graph of size = 10 scatter = pg.ScatterPlotItem(size=10)
In order to do this we use setSymbol method with the scatter plot graph object
Syntax : scatter.setSymbol(s)
Argument : It takes string as argument
Return : It returns None
Below is the implementation.
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