If-statement = true then replace column with specfic value - How to?

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Hey

I'm trying to replace a whole column with a specific value if the number already appears in the column

Any suggestions?

My current output is the same as the input except for the one space where -3 appears it replaces it with 0 for some reason

m = size(input, 1);
n = size(input, 2);
for i = 1:n
    for j = 1:m
        if (input(i,j) == -3)
        inputTemp(i,:) = -3;
        i = i + 1;
        else
        inputTemp(i,j)= input(i,j);
        end
    end
end

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infinity 2019-6-25

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Hello,

Why do you put

i = i + 1;

in your code?

Tobias Skovgaard 2019-6-25

Because if -3 appears once in the column it needs to replace the whole column with -3 and then go to the next :)

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Answer 1

KALYAN ACHARJYA 2019-6-25

编辑：KALYAN ACHARJYA 2019-6-25

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1 个投票

[m n]=size(input);
for i=1:m
    for j=1:n
        if input(i,j)==-3
        inputTemp(i,:)=-3;
        end
    end
end

Same code can be implemeneted without loop-Recomended

inputTemp?? Please note you are not going to "replace column with specfic value"

As per the code, when any element =-3, then only respective row elements (definitely all columns) are forced to -3.

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Tobias Skovgaard 2019-6-25

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Ah yeah, I see - nice! I've got it working. Thanks for your time :-)

[m n]=size(input);
for i=1:m
    for j=1:n
        if input(i,j)==-3
        input(:,j)=-3;
        end
    end
end

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If-statement = true then replace column with specfic value - How to?

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