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#1 2012-09-02 23:29:09
- tina123
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get mean location in histogram
Let say we have image data like this .
0 0 0 0 1 1 5 4 666 1 1 0 0 0 0 0 0 0 0
Now histogram would be like this
Number of occurrence of 0 ==> 12
Number of occurrence of 1 ==> 4
Number of occurrence of 4 ==> 1
Number of occurrence of 5 ==> 1
Number of occurrence of 666 ==> 1
mean : 12 +4 +1 +1 +1 / total number of points.
mean = 19/19 == > 1
Now issue is i wanna show mean in color form in histogram .
but how can we get location of mean in histogram like in x bins and y probability ?
Where will be mean locate?
Last edited by tina123 (2012-09-02 23:34:27)
#2 2012-09-03 01:38:16
- bob bundy
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Re: get mean location in histogram
hi tina123
The mean is not 1
It is also not a histogram and the data range is not continuous.
I wonder: did you want 666 or rather 6 then 6 then 6.
Bob
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
#4 2012-09-03 17:38:32
- bob bundy
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Re: get mean location in histogram
hi tina123,
If you look at this page:
http://www.mathsisfun.com/definitions/histogram.html
you will see you require a range of data for each frequency to make a histogram.
The best you can do with these data is a bar graph.
Please explain where the data comes from.
Bob
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
#5 2012-09-03 18:02:47
- tina123
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Re: get mean location in histogram
bob bundy wrote:
hi tina123,
If you look at this page:
http://www.mathsisfun.com/definitions/histogram.html
you will see you require a range of data for each frequency to make a histogram.
The best you can do with these data is a bar graph.
Please explain where the data comes from.
Bob
Well you make me more confuse .
As far as i understand , histogram is the occurrence Of Pixels .
so ,
0 0 0 0 1 1 5 4 666 1 1 0 0 0 0 0 0 0 0
Now histogram would be like this
Number of occurrence of 0 ==> 12
Number of occurrence of 1 ==> 4
Number of occurrence of 4 ==> 1
Number of occurrence of 5 ==> 1
Number of occurrence of 666 ==> 1
to show it in bar graph,
0 is 12 times .
1 is 4 timse .
4 is 1 times
5 is 1 times
and 666 is 1 times .
so if we wanna get mean of hitogram . we can do like
sum of all occurence / totalbins.
That's what i know .
#6 2012-09-03 18:38:04
- bob bundy
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Re: get mean location in histogram
hi tina123,
I'm also confused about this.
How does an occurence of pixels = http://en.wikipedia.org/wiki/Pixel lead to 19 data values ?
Bob
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei