save only one value

Question

Tomas 2014-3-13

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/121420-save-only-one-value

编辑： Salaheddin Hosseinzadeh 2014-3-18

Hello,

I have for example matrix

    MON = [2.8 3.6 17.2;
            5.4 8.3 15.8;
            2.5 3.2 17.6;
             9.9 10.7 13.6;
              5.5 8.9 15.5;
              9.7 11 13.9;
              2.3 3.9 17.9;
              5.7 8.1 15.1;
              9.4 10.5 13;
              9.9 13.2 13.7];

I calculate distance between points from MATRIX.

or i=1:m % pre pocet objektov (pre kazdy riadok MON)

        B = MON(i,:); % vloz i-ty riadok z MON do premennej B
        for j=1:r % pre kazdy riadok TAZ
            ED(j)= distance(TAZ(j,:),B,fff); %euklidovska vzdialenost
            [minD, minI(idx)] = min([ED]); %minimalna hodnota a index
        end

Then I want to save the smallest value to the cell.

 [e,f]=size(ED);
        for h=1:f
            if (ED(h) == ED(minI(idx)))          
            Z{h}{z}=B;
            z=z+1;
          end
        end   
        idx=idx+1;
    end

If I have the same value is stored me both to cell. How i stored a just a single valu to cell.

For example ED=[4 4 6] I want only values from position ED(1) save to cell.

Thanks.

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Image Analyst 2014-3-15

Why a cell instead of a regular numerical array which is much much easier to work with?

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Answer 1

Salaheddin Hosseinzadeh 2014-3-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/121420-save-only-one-value#answer_128240

在 MATLAB Online 中打开

Sorry, but even your English is a bit confusing, just like mine! lol Is the problem of having two 4 bothers you?

If so then I guess you can use 'unique' to get rid of the repeated 4

ED= unique(ED,'stable') % this should give you ED=[4,6]

Sorry if I didn't get what's your problem, please explain more what do you want to happen.

Good Luck!

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Tomas 2014-3-15

编辑：Tomas 2014-3-15

Yes, I'm sure,

??? Error using ==> unique at 34 Unrecognized option.

Error in ==> KMNS at 262 ED= unique(ED,'stable')

ED is for example ED=[inf NaN NaN] i want to have ED=[inf, NaN]

Salaheddin Hosseinzadeh 2014-3-18

编辑：Salaheddin Hosseinzadeh 2014-3-18

在 MATLAB Online 中打开

First of all so sorry for getting back to you with a huge delay, you're problem is probably solved by now! so sorry

I read through the MATLAB help for 'unique()' and unfortunately it's clearly documented that 'unique treats NaN values as distinct'

So for your example we can't use unique anyway!

If the problem is only with NaN then it's easy

i=1;
NanCount=0;
while(i<= length(ED))
     if(isnan(ED(i)))
         if(NanCount>0)
            ED(i)=[];
            i=i-1;
         end
         NanCount=NanCount+1; % to see how many nan is omitted
     end %end of if
     i=i+1;
end %end of while