replace not selected value by zero

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Hi I have 10 values. my code select 3 values, for example, if x=[1 2 3 4 5 6 7 8 9 10] and my code select [1 3 5] i want a code to do this x= [1 0 3 0 5 0 0 0 0 0]?.

Accepted Answer

Star Strider
Star Strider on 28 Jan 2018
This works:
x=[1 2 3 4 5 6 7 8 9 10];
ToKeep = [1 3 5];
idx = ismember(x, ToKeep);
Result = x .* idx
Result =
1 0 3 0 5 0 0 0 0 0
  2 Comments
Star Strider
Star Strider on 28 Jan 2018
‘I have 10 values. my code select 3 values,’
I interpret ‘values’ as indicating array elements.

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More Answers (1)

Image Analyst
Image Analyst on 28 Jan 2018
Here's one way:
x=[1 2 3 4 5 6 7 8 9 10]
mask = [1 3 5]
x2 = zeros(1, length(x)); % Initialize x2
x2(mask) = x(mask) % Pull over values in the mask from x and put them in the same column.

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