Histogram.

hist(y) bins the elements of y into 10 equally spaced containers and returns a histogram bar plot of the results.

If y is a matrix, hist works down the columns.

hist(y,m), where m is a scalar, uses m bins.

hist(y,x), where x is a vector, returns the distribution of y among bins with centers specified by x.

p=hist(...) returns a handle to the plot.

Here is a typical example of using hist: 

	require "lab"
	w=gfx.Window(); 
	methods=2;
	x=lab.randn(1000,methods);
	w:hist(x,10)
	w:legend('gauss1','gauss2')

The hist command, if no color is specified, makes automatic use of the colors specified by the colorOrder property, e.g: 

	require "gfx"
	w=gfx.Window();
	x=lab.randn(100,4);
	p=w:hist(x,10)	
	c=p:get('colorOrder'); 
	for i=1,#c do 
		print(i,c[i][1],c[i][2],c[i][3]); 
	end
	c[1][1]='0'; c[1][3]=1; 
	p:set('colorOrder',c)
The default ColorOrder is listed using the example above where the default is red for one line, and for multiple lines, to cycle through the colors in the table. The last two lines of the example change the first color in the colorOrder to blue.