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Say I have a vector which has thousands of elements. What is the R code necessary if I want to make the elements at indices between 100-200 become 0?
Additionally how would I count the length between two different values, for example if I want to know the length of time when the ‘share price’ is between 30-40?
Please read the ‘Introduction to R’ manual that came with your installation.
One of your questions is simply
and the other operations are similar. This is essential material, so you need to read up a little.