我是一名有用的助手,可以为您翻译文本。
在Stata中,我会输入
我有一个非常大的数据集,需要将其从宽格式转换为长格式。
我的数据集看起来像这样:
COMPANY PRODUCT REVENUESJAN2010 REVENUESFEB2010 REVENUESMARCH2010 ... REVENUESDEC2016 COSTSJAN2010 COSTSFEB2010 COSTSMARCH2010 ... COSTSDEC2016
COMPANY A PRODUCT 1 6400 11050 6550 10600 8500 10400 9100 9850
COMPANY A PRODUCT 2 2700 3000 2800 3800 2850 2400 3100 3250
COMPANY B PRODUCT 3 5900 4150 5750 3750 4200 6100 2950 4600
COMPANY B PRODUCT 4 550 600 0 650 200 700 100 500
COMPANY B PRODUCT 5 1500 3750 550 2100 1850 1700 3150 450
COMPANY C PRODUCT 6 19300 17250 23600 21250 18200 26950 18200 23900
我希望它们看起来像:
COMPANY PRODUCT DATE REVENUES COSTS
COMPANY A PRODUCT 1 Dec-16 10600 9850
COMPANY A PRODUCT 1 Feb-10 11050 10400
COMPANY A PRODUCT 1 Jan-10 6400 8500
COMPANY A PRODUCT 1 Mar-10 6550 9100
COMPANY A PRODUCT 2 Dec-16 3800 3250
COMPANY A PRODUCT 2 Feb-10 3000 2400
COMPANY A PRODUCT 2 Jan-10 2700 2850
COMPANY A PRODUCT 2 Mar-10 2800 3100
COMPANY B PRODUCT 3 Dec-16 3750 4600
COMPANY B PRODUCT 3 Feb-10 4150 6100
COMPANY B PRODUCT 3 Jan-10 5900 4200
COMPANY B PRODUCT 3 Mar-10 5750 2950
COMPANY B PRODUCT 4 Dec-16 650 500
COMPANY B PRODUCT 4 Feb-10 600 700
COMPANY B PRODUCT 4 Jan-10 550 200
COMPANY B PRODUCT 4 Mar-10 0 100
COMPANY B PRODUCT 5 Dec-16 2100 450
COMPANY B PRODUCT 5 Feb-10 3750 1700
COMPANY B PRODUCT 5 Jan-10 1500 1850
COMPANY B PRODUCT 5 Mar-10 550 3150
COMPANY C PRODUCT 6 Dec-16 21250 23900
COMPANY C PRODUCT 6 Feb-10 17250 26950
COMPANY C PRODUCT 6 Jan-10 19300 18200
COMPANY C PRODUCT 6 Mar-10 23600 18200
在Stata中,我会输入
reshape long REVENUES COSTS, i(COMPANY PRODUCT) j(DATE) string
。在R中该怎么做?