Discussion :

[rabeh.ram]

dans matplotlib scatter comment zoomer ou aller à un point spécifique en donnant les coordonnées de ce point ou le nom du point

Code :

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from PyQt5.QtWidgets import QMainWindow, QApplication, QPushButton,QLineEdit
from PyQt5 import QtCore, QtGui
import sys
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.figure import Figure
import numpy as np
import pandas as pd
class Window(QMainWindow):
    def __init__(self):
        super().__init__()        
        title = "Find or zoom to point"
        top = 400
        left = 400
        width = 900
        height = 550
        self.setWindowTitle(title)
        self.setGeometry(top, left, width, height)
        self.MyUI()
    def MyUI(self):
        self.canvas = Canvas(self, width=8, height=4)  
        self.canvas.move(0,0)        
        line_edit1 = QLineEdit("entre x", self)
        line_edit1.move(100, 430)
        line_edit2 = QLineEdit("entre y", self)
        line_edit2.move(100, 470)
        line_edit3 = QLineEdit("entre point name", self)
        line_edit3.move(380, 450)
        button1 = QPushButton("Find(zoom) by coordinate", self)
        button1.setGeometry(QtCore.QRect(200, 430, 135, 70))
        button2 = QPushButton("Find(zoom) by point name", self)
        button2.setGeometry(QtCore.QRect(480, 450, 135, 30)) 
class Canvas(FigureCanvas):
    def __init__(self, parent = None, width = 5, height = 5, dpi = 100):
        fig = Figure(figsize=(width, height), dpi=dpi)
        self.axes = fig.add_subplot(111)
        FigureCanvas.__init__(self, fig)
        self.setParent(parent)
        self.plot()
    def plot(self):
        data={'point_name':["A","B","C","D","E"]
              ,'x':[12,18,25,42,9],'y':[9,15,2,23,5]}
        df = pd.DataFrame(data)        
        ax = self.figure.add_subplot(111)
        ax.scatter(df['x'],df['y'])
        labels=list(df.point_name)
        xlabel=list(df.x)
        ylabel=list(df.y)
        for i, txt in enumerate(labels):
                ax.annotate(txt,(xlabel[i],ylabel[i]))
app = QApplication(sys.argv)
window = Window()
window.show()