MATLAB: Is there something wrong with this function

function

It is supposed to figure out if the number is whole or not. if not it rounds down, if it is it squares.

function [remainder]=data_modifier(data1)
remainder=rem(data1,1)
if remainder==0
    sqrt(data1)
else
    floor(data1)
end
end

Best Answer

function [result]=data_modifier(data1)
   if isfloat(data1)==1
  sqrt(data1)
   else 
  floor(data1)
   end 
  end

Related Solutions

MATLAB: Array muddle problem

Here's a method that works for what you want to do. If X is length n x 1, create the modifier such that it is only n/2 x 1. Then, multiply the modifier by [ 1 1 ] a 1 x 2 array. This results in an n/2 x 2 array. Then, reshape the transpose to create an n x 1 array which will have each element repeated once. Here's the code:

modifier = percent(rand_percent(1:length(X)/2));  
modifier = modifier * [ 1 1 ];
modifier = reshape(modifier',[],1);

Then, the final result can be multiplied element-wise by X:

Y = X.*modifier;

MATLAB: Error with remainder (rem) and fix – change problem

I suspect your difficulty is due, not to the 'rem' function, but to the impossibility of representing the fractional values 0.10 and 0.05 exactly. This is a well-known characteristic of binary floating point numbers in all binary computers.

The remedy for you is to immediately multiply the number you receive as an input by 100 and round to an integer. In other words, do your problem entirely in pennies, not dollars.

 Purchase=input('In what amount is the purchase? ');
 Pennies = round(100*Purchase);

Then revise the rest to deal in pennies, not dollars.

Best Answer

Related Solutions

MATLAB: Array muddle problem

MATLAB: Error with remainder (rem) and fix – change problem

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