How can I filter companies based on share price in matlab

I have got daily share prices of different companies from CRSP database.Now I want to filter these comapnies based on their share price.

I only need companies that have share price greater than $1. How can I do that in Matlanb?

Secondly which price should I use ? like if a company have got share price less than $1 on one day and then its share price increase to let suppose $3 in next few days should I remove that company or not.I am really confuse about this filter.

Would someone be able to help?

[dpb]

sharedata(sharedata<1)=[];   % remove those less than $1

As far as the second, we have no way to answer such -- that's all up to what your objectives are and we can't answer that 'cuz we don't know the problem to be solved.