jQuery Grid Plugin - jqGrid

Hi, I hope I'm wrong, but I cannot figure out any way to retrieve all the rows of a grid. No matter what I do, only the currently visible rows are available to me, which is practically useless.

I am using jqGrid 4.3.3 and I have 'scroll' and 'gridview' set to true in my jqGrid() setup call.

These are the ways I've tried accessing a column's value for all rows:

var column = $('#myGrid').jqGrid('getCol', 'mycolumn');

var data = $('#myGrid').jqGrid('getRowData');

var ids = $('#myGrid').jqGrid('getDataIDs');

In both instances, I only get data for the currently visible rows. Surely there must be a way to get all rows and I'm just missing it somehow.  Hopefully you can point out the error of my ways because I really need to retrieve data from all rows.

Thanks in advance for your help.