Requested array exceeds maximum array size preference

Hi,

I have a large character array (x). When I try to extract a subset of the array, I get the following error:

"Requested 2149888950x1 (16.0GB) array exceeds maximum array size preference. Creation of arrays greater than this limit may take a long time and cause MATLAB to become unresponsive. See array size limit or preference panel for more information."

But, the new array that I am trying to create is much, much smaller than the existing array! Any idea what's going on?

thanks!

>> whos x

Name Size Bytes Class Attributes

x 1x2544156856 5088313712 char

>> ind

ind =

2149888951

>> x(ind)

ans =

1

>> x(ind+1)

ans =

4

>> x(ind:ind+1)

Requested 2149888950x1 (16.0GB) array exceeds maximum array size preference. Creation of arrays greater than this limit may take a long time and cause MATLAB to become unresponsive. See array size limit or preference panel for more information.

>> x2=x'; x2(ind:ind+1)

Requested 2149888950x1 (16.0GB) array exceeds maximum array size preference. Creation of arrays greater than this limit may take a long time and cause MATLAB to become unresponsive. See array size limit or preference panel for more information.

Answer 1

[Francis Plamondon]

Where is this x variable coming from?

Maybe you could try

T=tall(x);
y=T(ind:ind+1);
gather(y)

[Jack]

1. x is a character array from a text file. I am searching the text file for specific character sequences.

fid=fopen(mytextfile);

x=fscanf(fid,'%c');

fclose(fid);

2. Tall didn't seem to work

Error using tall

Could not create a mapreduce execution environment from the default parallel cluster.

Error in:

T=tall(x);