PyQtGraph – Setting Scale of Bar Graph
In this article we will see how we set the scale of the 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.) and second is to provide tools to aid in rapid application development (for example, property trees such as used in Qt Designer).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. Scale is basically the multiplication factor of the data, by setting scale we can multiply the bar graph data values with the scale value.
We can create a plot window and bar graph with the help of commands given below
# creating a pyqtgraph plot window window = pg.plot() # creating a bar graph of green color bargraph = pg.BarGraphItem(x=x, height=y1, width=0.6, brush='g')
In order to do this we use
scalemethod with the bar graph object
Syntax : bargraph.scale(mul_x, mul_y)
Argument : It takes two integer as argument
Return : It returns None
Below is the implementation
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