C programming: logarithmic index array [closed]

StackOverflow https://stackoverflow.com/questions/21086852

  •  27-09-2022
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Question

I'm trying to decimate a given vector with a logarithmic rule instead of a linear one.

e.g.:

The given vector has 100 elements. I want to reduce it to a vector of 10 elements that are the same elements of the starting vector taken with a logarithmic rule on the int interval [0,99].

I hope to be clear enough. Any help is appreciated !

Have a nice day !

Was it helpful?

Solution

In pseudo-code :

int n; // Length of subsampled array

for i:
   new_array[i] = array[(int)(log(i)/log(n)*length(array))]

Is that what you are trying to do ?

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