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Articles on Trending Technologies
Technical articles with clear explanations and examples
Logarithmic Y-axis bins in Python
To plot logarithmic Y-axis bins in Python, we can use matplotlib's yscale() method to set a logarithmic scale. This is particularly useful when your data spans several orders of magnitude, making it easier to visualize trends that would be compressed on a linear scale. Steps to Create Logarithmic Y-axis Plot Create x and y data points using NumPy Set the Y-axis scale using the yscale() method Plot the x and y points using the plot() method Add labels and legend for better visualization Display the figure using the show() method Example Here's how to ...
Read MoreHow to plot a time series in Python?
To plot a time series in Python using matplotlib, we can take the following steps − Create x and y points, using numpy. Plot the created x and y points using the plot() method. To display the figure, use the show() method. Basic Time Series Plot Here's a simple example that creates hourly data points for a full day ? import matplotlib.pyplot as plt import datetime import numpy as np plt.rcParams["figure.figsize"] = [7.50, 3.50] plt.rcParams["figure.autolayout"] = True # Create datetime points for 24 hours x = np.array([datetime.datetime(2021, 1, 1, i, 0) ...
Read MoreHow to hide ticks label in Python but keep the ticks in place?
When working with matplotlib plots, you might need to hide tick labels while keeping the tick marks visible. This is useful for creating cleaner visualizations or when labels would be redundant or cluttered. Basic Approach The simplest method is using plt.xticks() or plt.yticks() with empty labels ? import matplotlib.pyplot as plt import numpy as np # Create sample data x = np.linspace(1, 10, 100) y = np.log(x) # Create the plot plt.figure(figsize=(8, 4)) plt.plot(x, y, 'b-', linewidth=2) # Hide x-axis labels but keep ticks plt.xticks(ticks=range(1, 11), labels=[]) # Add title and labels ...
Read MoreHow to get the color of the most recent plotted line in Python?
When working with matplotlib plots, you often need to retrieve the color of the most recently plotted line for further customization or analysis. Python provides the get_color() method to access line properties. Basic Example Here's how to get the color of the most recent plotted line ? import numpy as np import matplotlib.pyplot as plt # Set figure properties plt.rcParams["figure.figsize"] = [7.50, 3.50] plt.rcParams["figure.autolayout"] = True # Create data points x = np.linspace(1, 10, 1000) y = np.linspace(10, 20, 1000) # Plot line and capture the line object line, = plt.plot(x, y, c="red", ...
Read MoreHow to put a legend outside the plot with Pandas?
When creating plots with Pandas, legends can sometimes overlap with the plot area. Using bbox_to_anchor parameter in legend() allows you to position the legend outside the plot boundaries for better visibility. Basic Example Here's how to create a DataFrame and place the legend outside the plot ? import pandas as pd import matplotlib.pyplot as plt # Set figure size for better display plt.rcParams["figure.figsize"] = [7.50, 3.50] plt.rcParams["figure.autolayout"] = True # Create sample data data = {'Column 1': [i for i in range(10)], 'Column 2': [i * ...
Read MoreDifference between tkinter and Tkinter
The main difference between Tkinter and tkinter is the Python version compatibility. Tkinter (capital T) was used in Python 2, while tkinter (lowercase t) is used in Python 3 and later versions. Python 2 vs Python 3 Import Syntax In Python 2, the tkinter module was named with a capital T ? from Tkinter import * In Python 3 and later, the module name uses lowercase ? from tkinter import * Example: Python 3 Error with Capital T If you try to use the old Python 2 syntax in ...
Read MoreDisplay message when hovering over something with mouse cursor in Tkinter Python
Let us suppose we want to create an application where we want to add some description on Tkinter widgets such that it displays tooltip text while hovering on the button widget. It can be achieved by adding a tooltip or popup. Tooltips are useful in applications where User Interaction is required. We can define the tooltip by instantiating the constructor of Balloon(win) from tkinter.tix. After that, we can bind the button with the tooltip message that applies on the widget. Using tkinter.tix for Tooltips The tkinter.tix module provides the Balloon widget for creating tooltips. Here's how to ...
Read MoreDraw a circle in using Tkinter Python
Tkinter Canvas widget provides built-in methods for creating various shapes including circles, rectangles, triangles, and freeform shapes. To draw a circle, we use the create_oval() method with specific coordinates. Syntax The basic syntax for creating a circle using create_oval() method is ? canvas.create_oval(x0, y0, x1, y1, options) Parameters x0, y0 ? Top-left corner coordinates of the bounding rectangle x1, y1 ? Bottom-right corner coordinates of the bounding rectangle options ? Additional styling options like fill, outline, width Example − Basic Circle Here's how to create a simple circle using ...
Read MoreHow can I create a dropdown menu from a List in Tkinter?
Creating a dropdown menu in Tkinter is simple using the OptionMenu widget. This widget allows users to select from a predefined list of options through a dropdown interface. Basic Dropdown Menu To create a dropdown menu, use OptionMenu(parent, variable, *values) where the variable stores the selected value − from tkinter import * # Create main window win = Tk() win.geometry("400x200") win.title("Dropdown Menu Example") # Create StringVar to store selected value selected_language = StringVar() selected_language.set("Select Any Language") # Create dropdown menu languages = ["C++", "Java", "Python", "JavaScript", "Rust", "GoLang"] dropdown = OptionMenu(win, selected_language, *languages) ...
Read MoreHow can I prevent a window from being resized with Tkinter?
Tkinter windows can be resized automatically by hovering and pulling over the window borders. We can disable the resizable property using the resizable(boolean value) method. We will pass False value to this method which will disable the window from being resized. Example Here's how to create a non-resizable Tkinter window − # Import the tkinter library from tkinter import * # Create an instance of tkinter frame win = Tk() # Set the geometry win.geometry("650x250") Label(win, text="Hello World", font=('Times New Roman bold', 20)).pack(pady=20) # Make the window non-resizable win.resizable(False, False) win.mainloop() ...
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