is there a way of scanning an array to find out what there is in there so i dont reinsert the same variable in there?

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ME 2015-3-13

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关闭： MATLAB Answer Bot 2021-8-20

i have an array numbers = [];, i want to create a while loop which inserts numbers into the array. i do not want repeated numbers in the array so if the number already exists i do not want to insert it into the array.

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Stephen23 2015-3-13

Doing this in a loop might not be the best solution. If you gave a little more information then we could recommend alternative ways that might be neater and faster. You could tell us where these numbers are coming from, their dimensions and what code is executed in the loop. Best would be if you actually uploaded your code, then we could read through it and try it out.

ME 2015-3-16

so i have an array pairs with dimenstions 90x2 which appears to be like this 3 7 3 8 3 9 3 10 4 1 4 2 4 3 4 5 and so on I want to create a loop which scans through each row in the array and if the value matches the array pse I will disregard it otherwise insert it into new array called new.

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Answer 1

Adam 2015-3-13

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find( myArray == newNumber, 1 );

If that returns true the number is already there, if not it isn't.

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Answer 2

Adam 2015-3-17

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In response to your latest comment...

C = setdiff(A,B,'rows');

should do what you want, assuming your pse array also has 2 columns and that you wish to remove rows from A (your dimensions array) in which the pair of values matches your pse array.

Is your pse array just 1x2 or does it have multiple pairs?