setting the range of an histogram and plotting it to file

Hi, i'm trying to do an histogram using the package descriptive.
i use it in a batch script so  i cannot see it (i think it is closed
when the script finish)

so can i save it in a file?
and, can i set the range of the graph?
i have more group of datas to subdivide in 16 intervals  beetween 1.77 and 1.93.
but not all the data files have numbers beetween 1.77 and 1.93,
so, for examples if a group of data have a maximun of 1.85 and a min
of 1.79 "histogram()" divide it in 16 intervals from 1.79 to 1.85.
can i force the division from 1.79 to 1.85??

instead it have done a similar function:

gist(lista, intervallo, min, max, n):=
block(
	istogramma: makelist(0,i,1,n),
	gaussiana : makelist([0,0],i,1,n),
	for elem in lista do
	(

		cnt:1,
	       	while cnt <= n do
		( 	
			if elem>min+((cnt-1)*intervallo) then if elem<=min+((cnt)*intervallo)   then
				istogramma[cnt] : istogramma[cnt]+1,
				cnt:cnt + 1		
		)

	), i:1,
       	while i <= n do
	(
		gaussiana[i]:[min+((i-1)*intervallo),istogramma[i]],
		i:i+1
	),
	gaussiana
);

it works, but i don't know how to plot it!!