MATLAB: Need help figuring out what I am doing wrong with the graph

dicegraphhistogramprobability

my code::
function SumDice=RollDice(NumDice,NumRolls)
NumDice=1
NumRolls=500
distribution=zeros(NumDice*6,1);
for roll=1:NumRolls
  diceValues = randi(6,[NumDice 1]);
  totaldiceValue = sum(diceValues);
    distribution(totaldiceValue) = distribution(totaldiceValue) +1;
end
valueMin = NumDice;
valueMax = 6 * NumDice;
bar(valueMin:valueMax, distribution(valueMin:valueMax), 'hist')
end
my graph is supposed to look like: http://i1308.photobucket.com/albums/s617/pingchu93/graph_zps0c8e0851.jpg
but i'm getting
http://i1308.photobucket.com/albums/s617/pingchu93/graph_zpsd389fa40.jpg
The 1st graph has spaces and a difference x-axis scale which mine does not.
instead. any ideas? thanks!

Best Answer

use
 bar(valueMin:valueMax, distribution(valueMin:valueMax))
with out the 'hist' option
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