searching inside a matrix column
in [Matlab]
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From: Erik L on 8 Jun 2010 11:23 Hello, Lets i have a matrix : X = 2 8 6 3 2 6 9 4 3 I my algorithm, i am going to set a condition i-e, i take an element(lets say 2) from a column(col1) and want to see the difference between the current element and all other entries in the same column. If it is less than or equal to 2, i do something(if condition). I tried it but the problem with for loop is, that col1-col1=0 so my condition always become true when comparision reaches to the point of the same element. for example when X(2,1)=3 is being selected for comparision, my loop iterates and it compares X(2,1) with itself and take the difference=0. I want to avoid the element which is being selected currently for comparision in the loop. Please Help tak Erik L.
From: Md Sahidullah on 11 Jun 2010 02:33 Dear Erik, Make a condition using ~ and &. It will solve your problem. Simple try it! :) Thanking You. Yours Sincerely, Sahidullah "Erik L" <lookgrn(a)gmail.com> wrote in message <huln6t$neo$1(a)fred.mathworks.com>... > Hello, > > Lets i have a matrix : > X = > > 2 8 6 > 3 2 6 > 9 4 3 > > I my algorithm, i am going to set a condition i-e, i take an element(lets say 2) from a column(col1) and want to see the difference between the current element and all other entries in the same column. If it is less than or equal to 2, i do something(if condition). > > I tried it but the problem with for loop is, that col1-col1=0 so my condition always become true when comparision reaches to the point of the same element. > > for example when X(2,1)=3 is being selected for comparision, my loop iterates and it compares X(2,1) with itself and take the difference=0. I want to avoid the element which is being selected currently for comparision in the loop. > > Please Help > > tak > Erik L.
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