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@amroamroamro
amroamroamro / README.md
Last active June 5, 2024 11:32
[Python] Fitting plane/surface to a set of data points

Python version of the MATLAB code in this Stack Overflow post: https://stackoverflow.com/a/18648210/97160

The example shows how to determine the best-fit plane/surface (1st or higher order polynomial) over a set of three-dimensional points.

Implemented in Python + NumPy + SciPy + matplotlib.

quadratic_surface

@hagenw
hagenw / narginchk.m
Last active December 17, 2015 16:59
narginchk() for Matlab <2011b
function narginchk(minargs, maxargs)
if (nargin ~= 2)
error('%s: Usage: narginchk(minargs, maxargs)',upper(mfilename));
elseif (~isnumeric (minargs) || ~isscalar (minargs))
error ('minargs must be a numeric scalar');
elseif (~isnumeric (maxargs) || ~isscalar (maxargs))
error ('maxargs must be a numeric scalar');
elseif (minargs > maxargs)
error ('minargs cannot be larger than maxargs')
@Jxck
Jxck / README.md
Created December 16, 2012 09:16
libuv TCP server/client sample

how to compile

$ gcc -g -Wall -I /path/to/libuv/include /path/to/libuv/uv.a -framework CoreServices server.c -o server
$ gcc -g -Wall -I /path/to/libuv/include /path/to/libuv/uv.a -framework CoreServices client.c -o client
@Moligaloo
Moligaloo / gist:3850710
Created October 8, 2012 04:22
Send mail with attachment and signature via AppleScript in OS X
tell application "Mail"
set theSubject to "Subject" -- the subject
set theContent to "Content" -- the content
set theAddress to "xxx@163.com" -- the receiver
set theSignatureName to "signature_name"-- the signature name
set theAttachmentFile to "Macintosh HD:Users:moligaloo:Downloads:attachment.pdf" -- the attachment path
set msg to make new outgoing message with properties {subject: theSubject, content: theContent, visible:true}
@endolith
endolith / readme.md
Last active April 3, 2024 18:31
THD+N calculator

Unfortunately, there are 2 versions of this. The other is here: https://github.com/endolith/waveform-analyzer I intend to either completely combine them or completely separate them, eventually.

Somewhat crude THD+N calculator in Python

Measures the total harmonic distortion plus noise (THD+N) for a given input signal, by guessing the fundamental frequency (finding the peak in the FFT), and notching it out in the frequency domain. This is a THDR