samstewart

stat -f "%Sc" . | awk '// {  print  $4"/"$1 }' | xargs -I{} mkdir -p "{}"

samstewart

db.employees.aggregate(
	[
		{ $group: { _id: { college: "$college", department: "$department" },
		    salary: {$sum : "$salary"}
		}},
		{$out: "college_and_departments"}
	])

samstewart

{
	name: 'Bob Jones',
	salary: 40000,
	department: 'Mathematics',
	job_title: 'assistant professor'
	college: 'Science and Engineering, College of'
}
{
	name: 'Lisa Smith',
	department: 'Mathematics',

samstewart

A simple visualization of the publicly available salary data from the University of Minnesota. My goal is to highlight the absurd income disparity between the highest and lowest paid at the university.

Notes on the data processing: The raw data was pulled from UMN's human resource page

We filter out anyone who makes below $10,000 per year because they tend to be temporary workers and thus uninteresting. The only danger is that we also ignore those adjuncts who are teaching only a few courses.

samstewart

// ----------------------------------------------------------------------------
//
//
// 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 furnished to do so, subject to the following conditions:
//

samstewart

% Method to solve a linear system via jacobi iteration
% A: matrix in Ax = b
% b: column vector in Ax = b
% N: number of iterations
% returns: column vector solution after N iterations

function sol = jacobi_method(A, b, N)
	diagonal = diag(diag(A)); % strip out the diagonal
	diag_deleted = A - diagonal; % delete the diagonal
	

samstewart

\delimitershortfall-1sp
\newcommand\abs[1]{\left|#1\right|}

samstewart

\newcommand{\norm}[1]{\left\lVert#1\right\rVert}

samstewart

% plots a scalar field as a heat map
function plot_scalar_field(field)
    colormap('hot');
    
    imagesc(field);
end

samstewart

% plots a 3D array representing a vector field in grid coordinates (1, 1),
% (1, 2), etc.
function plot_vector_field(field)
    N = size(field, 1);
    M = size(field, 2);
    [x,y] = meshgrid(1:1:N, 1:1:M)
    
    u = field(:, :, 1);
    v = field(:, :, 2);