ordered_keys = function(t)
	local result = {}
	for k in pairs(t) do
		table.insert(result, k)
	end
	return result
end

table.size = function(t)
	local result = 0
	for _ in pairs(t) do
		result = result+1
	end
	return result
end

-- right margin of each column in 't', depending on the widths of names in 't.rows'
column_xs = function(t, init, px)

-- right margin of each name in 't', depending on the widths of names in 't.rows'
column_xs = function(rows, init, px)

	for _, name in ipairs(t.rows) do

	for _,name in ipairs(rows) do

	for _, name in ipairs(t.rows) do

	for name in pairs(t) do

end

end

	for _, name in ipairs(t.rows) do

	for name in pairs(t) do

end

end

-- render a square table (array of arrays) nicely
-- t contains a list of row/col names in key 'rows'

-- render a square table (table of tables) nicely

	local hrow = total_row_width(t) + namepx*2*#t

	local nt = table.size(t)
	local hrow = total_row_width(t) + namepx*2*nt

	local height = (#t+1)*c

	local height = (nt+1)*c

	local cx = column_xs(t, left+rside, namepx)  -- right margin of each column

	local rows = ordered_keys(t)
	local cx = column_xs(rows, left+rside, namepx)  -- right margin of each column

	for i=1,#t do

	for i=1,#rows do

		i = i+1

	for i,name in ipairs(t.rows) do

	for i,name in ipairs(rows) do

	for i=1,#t do

	for i=1,#rows do

		local px = (w - App.width(t.rows[i])) / 2  -- x padding
		love.graphics.print(t.rows[i], l+px, top+py)

		local px = (w - App.width(rows[i])) / 2  -- x padding
		love.graphics.print(rows[i], l+px, top+py)

	draw_table({{'X',  2}, {0, 'X'}, rows={'Ind', 'NZ'}})

	draw_table({
		Ind={Ind='X', NZ=2},
		NZ={Ind=0, NZ='X'}
	})