现在有几年的数据,每年有3000多个变量,想把这几年的数据合并到一起,用mer命令,结果显示“no room to add more variables Up to 5,000 variables are currently allowed, although you could reset the maximum using set
maxvar; see help memory.
”,然后根据提示设置变量最大值,提示“no; data in memory would be lost”;去设置内存,提示stata会自动设置内存:“set memory ignored.
Memory no longer needs to be set in modern Statas; memory adjustments are performed on the fly
automatically.
”
请教高人,是因为我每个数据变量太多不能合并吗,我试了下5000变量以内,可以合并数据,超过5000就不行了,请高人指点