51 lines
1.9 KiB
Python
51 lines
1.9 KiB
Python
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import PySimpleGUI as sg
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import random
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"""
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Bar Chart - Dual Axis Version
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A simple bar chart with a twist
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If you've got 2 values to plot, this technique enables you to trivially plot them both.
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Simply set your Graph element coordinates to be negative. Make your y=0 line run through the middle
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Copyright 2022 PySimpleGUI
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"""
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BAR_WIDTH = 25 # width of each bar
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BAR_SPACING = 30 # space between each bar
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EDGE_OFFSET = 3 # offset from the left edge for first bar
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GRAPH_SIZE= (500,500) # size in pixels
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sg.theme('Light brown 1')
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layout = [[sg.Text('Dual-Axis Bar Chart')],
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[sg.Graph(GRAPH_SIZE, (0, -GRAPH_SIZE[0]//2), (GRAPH_SIZE[0]//2, GRAPH_SIZE[1]//2), k='-GRAPH-')],
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[sg.Button('OK'), sg.T('Click to display more data'), sg.Exit()]]
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window = sg.Window('Bar Graph', layout, finalize=True)
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# get the Graph Element into a variable to make code completion easier
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graph:sg.Graph = window['-GRAPH-']
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while True:
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graph.erase()
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for i in range(8):
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graph_value = random.randint(0, GRAPH_SIZE[1]//2)
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graph.draw_rectangle(top_left=(i * BAR_SPACING + EDGE_OFFSET, graph_value),
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bottom_right=(i * BAR_SPACING + EDGE_OFFSET + BAR_WIDTH, 0),
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fill_color='green', line_width=0)
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# get a second value and draw an inverted bar. Simply set the Y value to be negative and top to be 0
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graph_value = random.randint(0, GRAPH_SIZE[1]//2)
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graph.draw_rectangle(top_left=(i * BAR_SPACING + EDGE_OFFSET, 0),
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bottom_right=(i * BAR_SPACING + EDGE_OFFSET + BAR_WIDTH, -graph_value),
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fill_color='red', line_width=0)
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# Normally at the top of the loop, but because we're drawing the graph first, making it at the bottom
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event, values = window.read()
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if event in (sg.WIN_CLOSED, 'Exit'):
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break
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window.close()
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