array newbie

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View previous topic :: View next topic   Author Message alwoodman Joined: 06 Oct 2004 Posts: 148 Location: Swansea Posted: Mon Nov 08, 2004 11:58 pm    Post subject: array newbie We're trying to create a wave height prediction model to predict swell size at a local beach the variables are as follows. the following figures come from a wave buoy situated some 15 miles off the coast on an hourly basis I need a little help with an array we have it in excel buy no idea how to write it in php wave period in seconds wave height ft Period Factor 4.5 0 8 0.5 12.5 1 Example: Given Period this predicts the factor (sec) = 8secs Given Wave height (ft) = 13ft Factor Prediction = 0.458549223 Wave height prediction = 5.961139896 Cheers Lee Back to top alwoodman Joined: 06 Oct 2004 Posts: 148 Location: Swansea Posted: Tue Nov 09, 2004 12:02 am    Post subject: Period Space Factor 4.5 Space 0 8 Space 0.5 12.5 Space 1 Back to top papercrane Joined: 16 Jul 2004 Posts: 637 Location: California, US Posted: Tue Nov 09, 2004 12:02 am    Post subject: You didn't really ask a question. A two dimentional array works like this: Code: $a = array(array(1, 2), array(3, 4), array(5, 6)); echo $a[2][0]; //will output 5 or Code: $a[0][0] = 1; $a[0][1] = 2; $a[2][0] = 5; //etc Back to top alwoodman Joined: 06 Oct 2004 Posts: 148 Location: Swansea Posted: Tue Nov 09, 2004 12:17 am    Post subject: can't get my head round that at all, gonna do some research on arrays i think.. Lee Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First

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