Dear all‘
The code below is too long for me.I know it could be replaced by a foreach loop,but I don't know how to write the loop。Could anyone tell me the simplified version or some books where I can learn more？
Code:
local  class1  "var1  var2"
local  class2  "var3  var4"
local  class3  "var5  var6"
local  class4  "var7  var8"
local  class5  "var9  var10"
local  class6  "var11  var12"
egen rnmofclass1=rownonmiss(`class1')
lab var rnmofclass1 "the number of nonmissing values in class1"
egen rnmofclass2=rownonmiss(`class2')
lab var rnmofclass2 "the number of nonmissing values in class2"
egen rnmofclass3=rownonmiss(`class3')
lab var rnmofclass3 "the number of nonmissing values in class3"
egen rnmofclass4=rownonmiss(`class4')
lab var rnmofclass4 "the number of nonmissing values in class4"
egen rnmofclass5=rownonmiss(`class5')
lab var rnmofclass5 "the number of nonmissing values in class5"
egen rnmofclass6=rownonmiss(`class6')
lab var rnmofclass6 "the number of nonmissing values in class6"