Skip to content

Instantly share code, notes, and snippets.

View kwinkunks's full-sized avatar
🐍
Writing bugs

Matt Hall kwinkunks

🐍
Writing bugs
883 followers · 300 following
View GitHub Profile
@kwinkunks
kwinkunks / fornberg.py
Created December 13, 2023 11:55
Bengt Fornbeg weights for finite difference
import numpy as np
def weights(z, x, m=0):
"""
Fornberg finite difference weights.
F90: https://github.com/bjodah/finitediff/blob/master/src/finitediff_fort.f90
Made this for Advent of Code 2023, Day 9.
Arguments:
@kwinkunks
kwinkunks / Should_you_scale_the_target_in_regression_tasks.ipynb
Created July 31, 2023 13:29
When, if ever, should you scale the target in a regression task?
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
@kwinkunks
kwinkunks / dtw.md
Created April 16, 2023 21:40
Dynmic time (or whatever!) warping libraries
@kwinkunks
kwinkunks / _Regressor_comparison.md
Last active November 21, 2023 23:35
Comparison of various regression algorithms

Regressor comparison

Regressor comparison

I wrote a blog post about this here.

I tweeted about it here and again

Inspired, of course, by the various wonderful comparisons in the sklearn docs, like this one for classifiers.

@kwinkunks
kwinkunks / Modulate_colourmap_with_opacity.ipynb
Last active October 26, 2023 09:12
Combining maps with matplotlib, by mapping one with a colourmap and the other with opacity.
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
@kwinkunks
kwinkunks / README.md
Last active August 29, 2023 08:35
Matplotlib colourmaps for QGIS

mpl2qgis

See script below.

Make sure the Python file is executable. Then:

$ ./mpl2qgis.py viridis bone

This writes a file colourmaps.xml. Result:

@kwinkunks
kwinkunks / Unmapping.ipynb
Created March 20, 2023 06:50
Unmapping colours from pseudocolour images
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
@kwinkunks
kwinkunks / Image-based_modeling_with_PSF.ipynb
Created September 8, 2021 17:18
Forward model seismic data by convolution of a reflectivity series with a point-spread function
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
@kwinkunks
kwinkunks / How_to_use_the_kata.ipynb
Last active April 11, 2023 13:37
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
@kwinkunks
kwinkunks / docstrings_and_doctests.py
Last active March 8, 2023 15:52
*Docstrings* and *doctests* are nice ways to get started with the topics of documentation and testing. The idea is to write the string that shows up when you do `help(some_function)` and in particular to include examples of how to call your function. The beautiful thing is that we can check that those examples work as advertised, a very useful …
def has_illegal_chars(string: str, illegal: str = ',;"!+=') -> bool:
"""
Detect the presence of illegal characters in a string.
By default, illegal characters are: `,;"!+=`
Args:
string: A string of text of any length.
illegal: A sequence of characters that are not allowed.
Returns: