how to find the mean of rows and columns matrix

[andisheye20]

hello every body

i have a matrix N*M which some of the elements with only 0 and 1 .

each element which is 1 has (row,column).

I want to find the elments 1 and find the mean of rows which is 1 and also the mean of columns.

thank alot

my email: andisheye20@gmail.com

[andisheye20]

hello every body

i have a matrix N*M which some of the elements with only 0 and 1 .

each element which is 1 has (row,column).

I want to find the elments 1 and find the mean of rows which is 1 and also the mean of columns.

thank alot

my email: andisheye20@gmail.com

[udka]

Could you create sample matrix with elements of how you are describing and mean of it how it should be calculated?

If i understand correctly your question,

-Matrices are nothing but 2D Arrays.

-So first you need to search for the number '1' in 2D array (There are many solutions available if you do search for Search 2D array).

-Then once you get indices you can find mean by using this : http://zone.ni.com/reference/en-XX/help/371361M-01/gmath/mean/

[andisheye20]

the sample matrix is defined as 

[0 0 0 0 0 0 0

 0 0 0 0 1 1 0

 0 0 0 1 1 1 1

 0 0 0 1 1 1 1

 0 0 0 1 1 1 1

 0 0 0 0 1 1 0

 0 0 0 0 0 1 0]

I want to find the mean of row and column of element which are 1.

for example the mean of this matrix by elemnts 1 is  almost row=4, column=5

[udka]

Can you explain how the mean for row is 4?

[Thoric]

---

@andisheye20 wrote:

the sample matrix is defined as 

[0 0 0 0 0 0 0

 0 0 0 0 1 1 0

 0 0 0 1 1 1 1

 0 0 0 1 1 1 1

 0 0 0 1 1 1 1

 0 0 0 0 1 1 0

 0 0 0 0 0 1 0]

I want to find the mean of row and column of element which are 1.

for example the mean of this matrix by elemnts 1 is  almost row=4, column=5

---

Your usage of the word 'mean' is confusing. Do you mean:

1. The centre of mass of the elements that are '1'? Because the coordinates for the middle of the cluster of 1's appear to be approximately [4,5].

2. The mathematical mean of the values, the same as the average value? This would result in seven row means and seven column means, all values somewhere fractionally between 0 and 1.

3. The 'average' of all x indices and y indices for where elements '1' are located? For example, there are 1's at locations [1,4], [1,5], [2,3], [2,4], [2,5], [2,6], [3,3], [3,4] etc. The means of these indices might be something like the centre of mass mentioned in point 1.

If you could be clearer on what you are trying to calculate?

[andisheye20]

hello 

I had write the way to achieve the answer for rows

the answer for the column is like the row

the attachment has the writen solution

thanks alot

[andisheye20]

excuseme I want the centre of mass of the elements that are '1'.

but i can not .

would you please help me to write the code.

[udka]

-Used search 2d array to get the indices and incremented by 1, beacuse array indices starts with 0.

-Indexed Array to get all rows and coulmns separately and then sent to Mean VI.

[andisheye20]

sorry sir

you have saved the file in labview15

but my lab is for 2014

would you please save it for labview 2014