search for: 10x24

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2005 Dec 05
1
need help with matrix manipulation
...roblem is not too basic to post here. I am a beginner having problems with some matrix manipulation. The data I am working with are sites with hourly ozone readings and is in a matrix where each row is a site and each column is an hourly reading. So for 10 sites, one day's worth of data is a 10x24 matrix - column 1 is the ozone measurement for midnight GMT, column 2 is ozone at 1:00am GMT, etc. My challenge is that I want to create a new matrix with the same sites, BUT I want the first column to be the hourly ozone reading at midnight LOCAL time. If all the sites were in the same time z...