Oct 16, 2013 · I'm trying to analyze some spectra for finding spectroscopic peaks, I've writen this simple code to find the max Y value (the peak) between two X data by clicking before and after the peak that I want to find.

Above uses the scipy.signal.find_peaks() function with a distance arg to determine the horizontal distance between each peak (i.e. smaller value gives more peaks): from scipy.signal import find_peaks yindices, _ = find_peaks(y, distance=10) xmax = x[yindices] ymax = y[yindices]

Jul 8, 2022 · I can easily get scipy.signal.find_peaks to plot peaks (example from the documentation): import matplotlib.pyplot as plt from scipy.misc import electrocardiogram from scipy.signal import find_peaks...

# Create our figure and data we'll use for plotting fig, ax = plt. subplots (figsize = (4, 4)) t = np. arange (0.0, 5.0, 0.01) s = np. cos (2 * np. pi * t) # Plot a line and add some simple annotations line, = ax. plot (t, s) ax. annotate ('figure pixels', xy = (10, 10), xycoords = 'figure pixels') ax. annotate ('figure points', xy = (107, 110 ...

Annotating a plot. Annotate plots. Annotate plots. Annotate polar plots. Annotate polar plots. Arrow Demo. Arrow Demo. Auto-wrap text. Auto-wrap text. Compose custom legends. ... Controlling style of text and labels using a dictionary. Controlling style of text and labels using a dictionary. Text rotation angle in data coordinates. Text ...

Dec 6, 2022 · In this article, we will discuss adding labels to the plot using Matplotlib in Python. But first, understand what are labels in a plot. The heading or sub-heading written at the vertical axis (say Y-axis) and the horizontal axis(say X-axis) …

matplotlib.pyplot is a collection of functions that make matplotlib work like MATLAB. Each pyplot function makes some change to a figure: e.g., creates a figure, creates a plotting area in a figure, plots some lines in a plotting area, decorates the plot with labels, etc.

Mar 22, 2025 · In this article, we will explore how to add value labels on a Matplotlib bar chart to improve readability and make data interpretation easier. Matplotlib provides multiple methods for adding value labels to a bar chart. We will primarily use the following two: plt.bar () function is used to plot a bar chart. Syntax: Parameters:

Sep 11, 2018 · add_label(y=y_max) # the peak - save the peak and. y_max = None # start looking for another one. You can also exchange if y < y_max * 0.9 with if y < y_max - 10000 to use a fixed difference (as mentioned by OP). See similar questions with these tags.

Jun 15, 2024 · In this article, we will explore how to label points in Matplotlib using different methods and techniques. Method 1: Annotate Function. The annotate function in Matplotlib is a versatile tool that can be used to add text annotations to a plot. You can specify the position of the text, as well as customize the appearance of the text, such as ...