Maximum variable size allowed by the program is exceeded and some errors

Hi Guys,

i want to write simple moving average in matlab by my code. i know there is and function for this reason but i need to write it. my first error is,Maximum variable size allowed by the program is exceeded . can someone fix it for me.

i have one function including SMA and one script.

Thank you in Advanced.

The SMA function is

function Simple_M=SMA(Buffer2,period,bar)

    sum1=zeros(1,period);
    for i=1:period
       
        sum1=sum1+Buffer2(bar-i);
       
    end
     Simple_M=sum1/period;
end

The Script is

clc;
clear;
close all;
close1=[11 34 82 22 43 26 98 73 81 21 55 39 76 15 45 68 39 28 11 28 44];
Period=7;
Buffer=zeros(1:20);
 for i=10:20
        Buffer(i)=SMA(close1(i),Period,i);
 end

Answer 1

[Steven Lord]

Buffer=zeros(1:20);

You need to use a comma instead of a colon.

BufferComma=zeros(1,20);

BufferComma is a 1-by-20 vector. Buffer would be a 1-by-2-by-3-by-4-by-5-by-6-by-... -by-19-by-20 array. How much memory would Buffer require?

>> numberOfElements = prod(1:20);
>> bytes = 8*numberOfElements;
>> exabytes = bytes/1e18

exabytes =

          19.4632160654131

How much memory is that? According to the Wikipedia page for exabyte "The content of the Library of Congress is commonly estimated to hold 10 terabytes of data in all printed material. Recent estimates of the size including audio, video, and digital materials start at 3 petabytes[27] to 20 petabytes. Therefore, one exabyte could hold a hundred thousand times the printed material or 50 to 300 times all the content of the Library of Congress."

Your computer doesn't have that much memory, and even if it did numberOfElements is greater than the maximum number of elements allowed in a matrix in MATLAB as stated by the computer function.

[mahan farahani]

Thanks for your answer. the first error fixed. i have some errors again. im new to matlab could you help more?

The errors are :

Index exceeds matrix dimensions.

Error in SMA (line 6)
        sum1=sum1+Buffer2(bar-i);

Error in zzzzz (line 10)
        Buffer(i)=SMA(close1(i),Period,i);
 

[Steven Lord]

bar-i is greater than the number of elements in Buffer2. Change the range of values for i over which you loop so bar-i is mo larger than the number of elements in Buffer2. The numel function may be of interest to you.

[mahan farahani]

I found out the problem. close1(i) should be close. because its an array but close1(i) is only one of the parts of close1.

Thank you for your advising.

[Walter Roberson]

It is more likely that close1(i) should be close1 not close . close is a MATLAB call to remove graphic windows.