Feb 7, 2025 · An intensity-duration-frequency (IDF) curve is a mathematical function that relates the rainfall intensity with its duration and frequency of occurrence. These curves are commonly used in hydrology for flood forecasting and civil engineering for urban drainage design.

Nov 28, 2019 · Python script for reading precipitation data, identifying rainfall events, and computing/plotting the IDF curve

Jul 17, 2014 · To calculate the cumulative distribution, use the cumsum() function, and divide by the total sum. The following function returns the values in sorted order and the corresponding cumulative distribution: x, counts = np.unique(a, return_counts=True) cusum = np.cumsum(counts) return x, cusum / cusum[-1]

Rainfall intensity duration frequency (IDF) curve calculation and plotting - dt-woods/idf

Feb 21, 2012 · According to https://matplotlib.org/stable/gallery/statistics/histogram_cumulative.html, now you can use axs.ecdf(data, label="CDF") to plot a CDF chart. For example, import matplotlib.pyplot as plt import numpy as np data = np.random.normal(1.0, 1.0, size=200) plt.ecdf(data) plt.show()

Apr 16, 2025 · There are two main methods to calculate and plot a CDF. Both methods are easy to understand and implement with Python. This method calculates CDF from the Probability Distribution Function (PDF). A histogram is created to visualize how data points are distributed and CDF is obtained by accumulating the probability of each data point.

This example shows how to plot the empirical cumulative distribution function (ECDF) of a sample. We also show the theoretical CDF. In engineering, ECDFs are sometimes called "non-exceedance" curves: the y-value for a given x-value gives probability that an observation from the sample is below that x-value.

Feb 28, 2023 · I have two Numpy arrays (both 210 entries in total) of rainfall values, one observed and the other forecast. My goal is to create a best-fit gamma CDF (my first time diving into gamma CDFs) to both...

Mar 17, 2017 · Precipitation data present challenges when we try to fit to a statistical distribution. This is an exercise done with 10 years record of precipitation for the Morropon station (Piura-Peru) affected by El Niño and La Niña events in years 98 and 99 respectively.

Aug 18, 2021 · Learn how to plot precipitation data using Python, Pandas, and Matplotlib. Explore how to parse and manipulate the data, plot it interactively or s...