PyQtGraph – Setting Data of Scatter Plot Graph
In this article, we will see how we can set data on the plot 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 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. Setting data will remove the previous data which exists in the plot graph.
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 setData method with the scatter plot graph object
Syntax : scatter.setData(x, y)
Argument : It takes two list as argument
Return : It returns None.
Below is the implementation.