LoopOverList
A loop creates multiple versions of a set of commands by iterating over a list of variables, numbers, or strings.
Properties
Name |
Type |
Description |
|
|---|---|---|---|
Iterators |
1..n |
Describes one or more iteration processes in this loop. |
|
Commands |
1..n |
Commands generated by the loop expanded by replacing tokens representing variables, numbers, or strings with their values. |
|
Updated |
0..1 |
When TRUE, the loop has been expanded into separate commands. |
Properties Inherited from TransformBase
Name |
Type |
Description |
|
|---|---|---|---|
ProducesDataframe |
0..n |
Signify the dataframe which this transform produces. |
|
ConsumesDataframe |
0..n |
Signify the dataframe which this transform acts upon. |
Properties Inherited from CommandBase
Name |
Type |
Description |
|
|---|---|---|---|
Command |
1..1 |
The type of command |
|
SourceInformation |
0..n |
Information about the source of the command. |
|
MessageText |
0..n |
Adds a message that can be displayed with the command. |
Item Type Hierarchy
- CommandBase
- TransformBase
LoopOverList
Relationships
The following identified item types reference this type.
Example_1_SPSS_LoopOverList
DO REPEAT existVar=firstVar TO var5
/newVar=new1 TO new5
/value=1 TO 5.
COMPUTE newVar=existVar*value.
END REPEAT.
{"Command": "LoopOverList",
"sourceInformation": {
"originalSourceText": "DO REPEAT existVar=firstVar TO var5
/newVar=new1 TO new5
/value=1 TO 5.
COMPUTE newVar=existVar*value.
END REPEAT."
},
"Iterators": [
{"IteratorSymbolName": "existVar",
"IteratorValues":
{"$type":"VariableRangeExpression",
"First": "firstVar",
"Last": "var5"}
},
{"IteratorSymbolName": "newVar",
"IteratorValues":
{"$type": "VariableListExpression",
"Variables": [
{"$type":"VariableRangeExpression",
"First": "new1",
"Last": "new5"}
]
}
},
{"IteratorSymbolName": "value",
"IteratorValues":
{"$type": "NumberListExpression",
"Variables": [
{"$type":"NumberRangeExpression",
"From": "1",
"To": "5",
"By": "1"}
]
}
}
],
"IteratorCommands:" [
{"Command": "compute",
"VariableName":
{"$type": "IteratorSymbolExpression", "IteratorSymbolName": "newVar"},
"Expression":
{"$type":"FunctionCallExpression",
"Function": "Multiplication",
"IsSDTLName":"True",
"Arguments": [
{"ArgumentName": "EXP1",
"ArgumentValue":
{"$type": "IteratorSymbolExpression",
"IteratorSymbolName": "existVar"}
},
{"ArgumentName": "EXP2",
"ArgumentValue":
{"$type": "IteratorSymbolExpression",
"IteratorSymbolName": "value"}
}
]
}
}
],
"Commands":[
********* Commands expanded in SDTL here ************
]
}
Example_1_Stata_LoopOverList
foreach partyidk of varlist PARTYID1 PARTYID2 PARTYID3 {
replace democrats=democrats+1 if `partyidk'==1
}
{"Command": "LoopOverList",
"sourceInformation": {
"originalSourceText": "foreach partyidk of varlist PARTYID1 PARTYID2 PARTYID3 {
replace democrats=democrats+1 if `partyidk'==1 }"
},
"Iterators": [
{"IteratorSymbolName": "partyidk",
"IteratorValues":
{"$type": "VariableListExpression",
"Variables": [
{"$type":"VariableSymbolExpression", "VariableName": "PARTYID1" },
{"$type":"VariableSymbolExpression", "VariableName": "PARTYID2" },
{"$type":"VariableSymbolExpression", "VariableName": "PARTYID3" },
]
}
},
],
"IteratorCommands:" [
{"Command": "compute",
"VariableName":
{"$type": "VariableSymbolExpression", "VariableName": "democrats"},
"Expression":
{"$type":"FunctionCallExpression",
"Function": "Addition",
"IsSDTLName":"True",
"Arguments": [
{"ArgumentName": "EXP1",
"ArgumentValue":
{"$type": "VariableSymbolExpression", "VariableName": "democrats"}
},
{"ArgumentName": "EXP2",
"ArgumentValue":
{"$type": "NumericConstantExpression", "Value": "1"}
}
]
},
"Condition":
{"FunctionCallExpression":
{"$type":"FunctionCallExpression",
"Function": "eq",
"IsSDTLName":"True",
"Arguments": [
{"ArgumentName": "EXP1",
"ArgumentValue":
{"$type": "IteratorSymbolExpression", "IteratorSymbolName": "partyidk"}
},
{"ArgumentName": "EXP2",
"ArgumentValue":
{"$type": "NumericConstantExpression", "Value": "1"}
}
]
}
}
],
"Commands":[
********* Commands expanded in SDTL here ************
]
}
Example_2_SPSS_LoopOverList
LOOP #I=1 TO 5 IF (Y GT 10).
COMPUTE X=X+1.
END LOOP.
{"Command": "LoopOverList",
"sourceInformation": {
"originalSourceText": "LOOP #I=1 TO 5 IF (Y GT 10).
COMPUTE X=X+1.
END LOOP."
},
"Iterators": [
{"IteratorSymbolName": "#I",
"IteratorValues":
{"$type": "NumberListExpression",
"Values": [
{"$type":"NumberRangeExpression",
"From": "1",
"To": "5",
"By": "1"}
]
}
}
],
"IteratorCommands:" [
{"Command": "DoIf",
"Condition":
{"$type":"FunctionCallExpression",
"Function": "gt",
"IsSDTLName":"True",
"Arguments": [
{"ArgumentName": "EXP1",
"ArgumentValue":
{""$type": "VariableSymbolExpression", "VariableName": "Y"}
},
{"ArgumentName": "EXP2",
"ArgumentValue":
{"$type": "NumericConstantExpression",
"Value": "10"}
}
]
"Commands": [
{"Command": "compute",
"VariableName":
{"$type": "VariableSymbolExpression", "VariableName": "X"},
"expression":
{"$type":"FunctionCallExpression",
"Function": "Addition",
"IsSDTLName":"True",
"Arguments": [
{"ArgumentName": "EXP1",
"ArgumentValue":
{""$type": "VariableSymbolExpression", "VariableName": "X"}
},
{"ArgumentName": "EXP2",
"ArgumentValue":
{"$type": "NumericConstantExpression",
"Value": "1"}
}
]
}
}
]
],
"Commands":[
********* Commands expanded in SDTL here ************
]
}
Example_2_Stata_LoopOverList
forvalues k = 0/9 {
replace idealfam=`k' if `k'==chldidel
}
{"Command": "LoopOverList",
"sourceInformation": {
"originalSourceText": "forvalues k = 0/9 {
replace idealfam=`k' if `k'==chldidel }"
},
"Iterators": [
{"IteratorSymbolName": "k",
"IteratorValues":
{"$type": "NumberRangeExpression",
"From": "0",
"To": "9",
"By": "1"
}
},
],
"IteratorCommands:" [
{"Command": "compute",
"VariableName":
{"$type": "VariableSymbolExpression", "VariableName": "idealfam"},
"Expression":
{"$type": "IteratorSymbolExpression", "IteratorSymbolName": "k"}
},
"Condition":
{"$type":"FunctionCallExpression",
"Function": "eq",
"IsSDTLName":"True",
"Arguments": [
{"ArgumentName": "EXP1",
"ArgumentValue":
{"$type": "VariableSymbolExpression", "VariableName": "chldidel"}
},
{"ArgumentName": "EXP2",
"ArgumentValue":
{"$type": "IteratorSymbolExpression", "IteratorSymbolName": "k"}
}
]
}
],
"Commands":[
********* Commands expanded in SDTL here ************
]
}
Example_3_SPSS_LoopOverList
SET MXLOOPS 10
LOOP .
COMPUTE X=X+1.
END LOOP.
{"Command": "LoopOverList",
"sourceInformation": {
"originalSourceText": "SET MXLOOPS 10
LOOP .
COMPUTE X=X+1.
END LOOP."
},
"Iterators": [
{"IteratorSymbolName": "",
"IteratorValues":
{"$type":"NumberRangeExpression",
"From": "1",
"To": "10",
"By": "1"}
}
],
"IteratorCommands:" [
{"Command": "compute",
"VariableName":
{"$type": "VariableSymbolExpression", "VariableName": "X"},
"expression":
{"$type":"FunctionCallExpression",
"Function": "Addition",
"IsSDTLName":"True",
"Arguments": [
{"ArgumentName": "EXP1",
"ArgumentValue":
{""$type": "VariableSymbolExpression", "VariableName": "X"}
},
{"ArgumentName": "EXP2",
"ArgumentValue":
{"$type": "NumericConstantExpression",
"Value": "1"}
}
]
}
}
],
"Commands":[
********* Commands expanded in SDTL here ************
]
}