Need help figuring out what I am doing wrong with my graph

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!

Answer 1

[Thomas]

use

 bar(valueMin:valueMax, distribution(valueMin:valueMax))

with out the 'hist' option

[Matthew]

yep that did it thanks :)

Answer 2

[Matt Fig]

What is the difference between the two graphs? The spaces between the bars? The title? The boldness of the lines? Be more specific.

[Matthew]

sorry, i edited it in my function. The 1st graph has spaces and a different y-axis scale which mine does not

[Matt Fig]

They both have x-scale from 1 to 6. What is different about that?

[Matt Fig]

You can set the width of the bars:

bar(valueMin:valueMax, distribution(valueMin:valueMax), .75,'hist')