I feel all karmalized! thanks.
I tried the copy and paste to a new sheet and it works. The primary difference from Excel’s behavior seems to be that the chart creation dialogue does not provide for “put on separate sheet”.
The pasted copy on the separate sheet is linked back to the values on the source sheet. I found that it initially acts like a graphic, but the chart commands (chart type, axis, legend, data range, etc.) can be accessed by first double-clicking the graphic and then right clicking.
It also allows more than one chart to be put on the target sheet / chart sheet.
Pretty neat!
(LO 4.0.0.3 Portable, on Win XP Pro SP3)