Mulitply diffrent numbers in a vector by a corrsponding number.

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jason
jason 2022-9-7
回答： Walter Roberson 2022-9-7
I have to multiply a specific number in a vector by different scalars. For example, in the vector: [1 6 8 10 14 20 25] 1,2,8 and 10 would be multiplied by 10, while 14, 20, and 25 would be multiplied by different scalars.
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Walter Roberson
Walter Roberson 2022-9-7
Are they to be multiplied based upon value, or based upon position?
If it is based upon value, then are the boundaries based upon range, or are they scattered around?

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回答（2 个）

David Hill
David Hill 2022-9-7
v=[1 6 8 10 14 20 25];
v(ismember(v,[1 2 8 10]))=10*v(ismember(v,[1 2 8 10]));%similarly for others
Walter Roberson
Walter Roberson 2022-9-7
Ran in:
V = [1 6 8 10 14 20 25]
V = 1×7
1 6 8 10 14 20 25
mask = V <= 10;
V(mask) = V(mask) * 10;
V(~mask) = V(~mask) * 100;
V
V = 1×7
10 60 80 100 1400 2000 2500

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