Matlab memory management; insufficient java heap -

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i hoping on here able explain or point me webpage learn more matlab's memory management. know matlab higher level language takes care of memory management, , bad. cause don't need worry , bad cause have no idea doing under hood. reason ask lately i've been getting error message lot. 

insufficient java heap memory continue operation

granted i'm using mid 2010 15" macbook pro, 4 gb of ram, not best computer perform image operations do. know matlab has delete function, , didn't know when/if helpful use function save memory? have used delete function before in hardware related tasks when sending data through serial delete serial object. beyond should using delete own memory management?

see this question. prevent java heap error, need change jvm options. change default value in matlab preferences or create new java.opts file -xmx (and optionally -xms) options, e.g.,

-xmx1g

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