用eviews对gdp季度数据进行季节调整?
eviews的初学者，求大神帮忙！用X12的乘法模型对gdp进行季节调整时出现如下错误：WARNING:Forecastextensioncannotbedoneform...
eviews的初学者，求大神帮忙！
用X12的乘法模型对gdp进行季节调整时出现如下错误：
WARNING: Forecast extension cannot be done for multiplicative or log-
additive seasonal adjustment due to negative or zero values
found in forecasts.
ERROR: Multiplicative or log additive seasonal adjustment cannot be
performed when preadjustment factors are derived from a regARIMA
model for data which have not been log transformed.
Check the values for the power or function arguments of the
transform spec and mode of the x11 spec. 展开
用X12的乘法模型对gdp进行季节调整时出现如下错误：
WARNING: Forecast extension cannot be done for multiplicative or log-
additive seasonal adjustment due to negative or zero values
found in forecasts.
ERROR: Multiplicative or log additive seasonal adjustment cannot be
performed when preadjustment factors are derived from a regARIMA
model for data which have not been log transformed.
Check the values for the power or function arguments of the
transform spec and mode of the x11 spec. 展开
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