[Lazarus] storing big dynamic matrices in file ?

Dear all, I want to manipulate, store, later retrieve, 2-dimensions matrices of single or double ; matrices may turn big and I wanted to turn to dynamic array of array the basic solution below works, but storing (and retrieval) of big matrices is VERY slow. any hint on the good way to

[Lazarus] up with Lazarus !

We love Lazarus and Pascal programming and anyone's best effort on this is deeply acknowledged. Let us stick to the topic that unites us. Etienne -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org