Nate Vack njvack

## A Slicing Thing.ipynb

      
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                njvack
                / A Slicing Thing.ipynb
            
            
              Created
              March 13, 2015 14:11
            
              
                A Slicing Notebook
              
          
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## README.md

      
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                njvack
                / README.md
            
            
              Last active
              February 8, 2024 21:43
            
              
                Color to hex and rgba converter
              
          
    Simple canvas-based color converter

To answer this StackOverflow question I wrote this — a small solution based on a never-rendered <canvas> element. It fills a 1-pixel canvas with the provided fill-style, and then reads the RGBA values of that pixel. It will work with any CSS color -- name, rgba(), hex, or even something more exotic like a gradient or pattern. Invalid colors are always returned as transparent black. Transparent colors are treated as painted on a newly-cleared canvas.
It's been tested in modern-ish versions of IE, Chrome, Safari, and Firefox. The API is:
color_convert.to_hex(color)   # Converts color to a hex-based RGB triple; to_hex('red') returns '#ff0000'
color_convert.to_rgba(color)  # Converts color to an rgba() string; to_rgba('red') returns 'rgba(255,0,0,1)'


## index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<script type="text/javascript">

window.console = window.console || {}
window.console.log = window.console.log || function() {};

console.log("Hello");

## convert.py
def convert_three_byte(frame):
    data_out = np.zeros(128, dtype=np.int32)  # You're looking to make a 128-element array of int32.
    data_out.dtype = np.byte
    data_out = data_out.reshape(-1, 4)  # Shape is now (128,4) and dtype is byte
    # Now, copy the data from chans08to00 into data_out. We need to specify which bytes to put it in.
    # Also, we need to reverse the data in frame.
    # You'd change 0:3 to 1:4 if the stuff in frame is big-endian, I think? You'll need to experiment.
    data_out[0:8, 0:3] = frame['chans08to00'][::-1]
    # ... and so on with channels
    data_out.dtype = np.int32

## dos_line_endings.py
#!/usr/bin/env python
"""
Usage: dos_line_endings

Takes stdin, changes all line endings from \r or \n to \r\n, strips UTF-8
byte-order mark (if any), writes to stdout.
"""

import sys
import re

## convert_dcm2niix.sh
#!/bin/bash

# Written by Jonah Chaiken and Nate Vack
# Support: bit_help@lists.wisc.edu

help=" Usage: convert_dcm2niix.sh <in_file> <out_file>

This program will individually convert a dicom archive file to a NIfTI file.

The input can be either a .tar file containing bzip2'd dicom slices, or a

## make_lags.py
#!/usr/bin/env python

"""
Compute stimulus orderings for the mnemonic similarity task, described in:
Stark SM, Stevenson R, Wu C, Rutledge S, & Stark CEL (2015). Stability of
age-related deficits in the mnemonic similarity task across task variations.
Behavioral Neuroscience 129(3), 257-268.

Written by Nate Vack <njvack@wisc.edu> at the Center for Healthy Minds,
University of Wisconsin-Madison, for the mp2 study conducted by Dan Grupe

## distribution_match.py
# -*- coding: utf-8 -*-

# Written by Nate Vack <njvack@wisc.edu> at the Center for Healthy Minds

# Copyright 2019 Board of Regents of the University of Wisconsin System
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is

## keybase.md

      
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                njvack
                / keybase.md
            
            
              Created
              November 12, 2019 17:31
            
              
                keybase.md
              
          
    Keybase proof

I hereby claim:

I am njvack on github.
I am njvack (https://keybase.io/njvack) on keybase.
I have a public key ASB6TTOovVMHwUxq7IPCufRUK8WWK-MQlLVNO5USZ4C1lQo

To claim this, I am signing this object:

  
## Brewfile
# Binary builds
tap "homebrew/cask"
# Lets me get at things like sequel-pro-nightly
tap "homebrew/cask-versions"

# mas -> "Mac App Store"
brew "mas"
mas "Xcode", id: 497799835

brew "imagemagick"
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8" />
	<script type="text/javascript">

	window.console = window.console \|\| {}
	window.console.log = window.console.log \|\| function() {};

	console.log("Hello");
	def convert_three_byte(frame):
	data_out = np.zeros(128, dtype=np.int32) # You're looking to make a 128-element array of int32.
	data_out.dtype = np.byte
	data_out = data_out.reshape(-1, 4) # Shape is now (128,4) and dtype is byte
	# Now, copy the data from chans08to00 into data_out. We need to specify which bytes to put it in.
	# Also, we need to reverse the data in frame.
	# You'd change 0:3 to 1:4 if the stuff in frame is big-endian, I think? You'll need to experiment.
	data_out[0:8, 0:3] = frame['chans08to00'][::-1]
	# ... and so on with channels
	data_out.dtype = np.int32
	#!/usr/bin/env python
	"""
	Usage: dos_line_endings

	Takes stdin, changes all line endings from \r or \n to \r\n, strips UTF-8
	byte-order mark (if any), writes to stdout.
	"""

	import sys
	import re
	#!/bin/bash

	# Written by Jonah Chaiken and Nate Vack
	# Support: bit_help@lists.wisc.edu

	help=" Usage: convert_dcm2niix.sh <in_file> <out_file>

	This program will individually convert a dicom archive file to a NIfTI file.

	The input can be either a .tar file containing bzip2'd dicom slices, or a
	#!/usr/bin/env python

	"""
	Compute stimulus orderings for the mnemonic similarity task, described in:
	Stark SM, Stevenson R, Wu C, Rutledge S, & Stark CEL (2015). Stability of
	age-related deficits in the mnemonic similarity task across task variations.
	Behavioral Neuroscience 129(3), 257-268.

	Written by Nate Vack <njvack@wisc.edu> at the Center for Healthy Minds,
	University of Wisconsin-Madison, for the mp2 study conducted by Dan Grupe
	# -- coding: utf-8 --

	# Written by Nate Vack <njvack@wisc.edu> at the Center for Healthy Minds

	# Copyright 2019 Board of Regents of the University of Wisconsin System
	# Permission is hereby granted, free of charge, to any person obtaining a copy
	# of this software and associated documentation files (the "Software"), to deal
	# in the Software without restriction, including without limitation the rights
	# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	# copies of the Software, and to permit persons to whom the Software is
	# Binary builds
	tap "homebrew/cask"
	# Lets me get at things like sequel-pro-nightly
	tap "homebrew/cask-versions"

	# mas -> "Mac App Store"
	brew "mas"
	mas "Xcode", id: 497799835

	brew "imagemagick"