在检验固定效应截面相关问题时（非平衡面板）
xtcsd,pes  //检验截面相关问题   用于平衡面板 非平衡都可以用
xtcsd,fri
xtcsd,fre
出现一下错误 请问怎么处理呀 是我的模型有错吗还是其他问题，
Error: inadequate matsize; must be at least 789
matsize too small
    You have attempted to create a matrix with too many rows or columns or attempted to fit a model with too many
    variables.  You need to increase matsize; it is currently 400.  Use set matsize; see help matsize.

    If you are using factor variables and included an interaction that has lots of missing cells, either increase
    matsize or set emptycells drop to reduce the required matrix size; see help set emptycells.

    If you are using factor variables, you might have accidentally treated a continuous variable as a
    categorical, resulting in lots of categories.  Use the c. operator on such variables.
r(908);
请大神解答 谢谢啦