clear?all;
[XY]?=?meshgrid（-3:.25:3）;??%產(chǎn)生已知道德數(shù)據(jù)柵格點
Z?=?peaks（XY）;?????????%計算已知點的函數(shù)值
[XIYI]?=?meshgrid（-3:.125:3）;