Change value for another value

I have some 99999 values in my array.

I want to change all of them to 0.

Is there code to change all the values at once?

Or do I need to change values in every column of the array?

Answer 1

[Star Strider]

Consider this example:

A = [99999 rand(1,2); rand 99999 rand; rand(1,2) 99999];
B = A;
B(A == 99999) = 0

producing:

A =     99999      0.82631       0.9912
      0.52395        99999      0.92544
      0.73902      0.56743        99999

and:

B =
            0      0.82631       0.9912
      0.52395            0      0.92544
      0.73902      0.56743            0

Make any necessary changes to get the result you want.

Answer 2

[stozaki]

Hello Sarah,

Sample code with a reduced number of arrays.

In your case, it's an array of 99999 values, not an array of 25 values.

>> A=[1 2 3 4 5; 6 7 8 9 10; 11 12 13 14 15; 16 17 18 19 20; 21 22 23 24 25]

A =

     1     2     3     4     5
     6     7     8     9    10
    11    12    13    14    15
    16    17    18    19    20
    21    22    23    24    25

>> A(:)=0

A =

     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0

Please refer colon.

Regards,

stozaki

Answer 3

[BN]

Hi, If I understood you well, you need this?

If Array is your Array, then:

index=find(Array==99999); % find all 99999 values. Replace Array with name of your array
Array(index)=0; %change 99999 to 0. Replace Array with name of your array

This code search whole your array to find 99999 numbers, then replacing all of them to 0.

Best Regards

[Walter Roberson]

You do not need the find(), you could use

index = Array===99999;
Array(index) = 0;

[BN]

Thank you Walter Roberson.