Unmet Hours

The following, will set the X coordinate of the reference point to 0:

daylgtctrl = idf_file.idfobjects["Daylighting:ReferencePoint".upper()][0]
daylgtctrl.XCoordinate_of_Reference_Point = 0

Will give you

Daylighting:ReferencePoint,
Core_Retail_DaylRefPt1,    !- Name
Core_Retail,              !- Zone Name
0,                        !- XCoordinate of Reference Point
14.2,                     !- YCoordinate of Reference Point
0.0;                      !- ZCoordinate of Reference Point

The ~~following,~~ following will set the X coordinate of the reference point to 0:

daylgtctrl = idf_file.idfobjects["Daylighting:ReferencePoint".upper()][0]
daylgtctrl.XCoordinate_of_Reference_Point = 0

Will give you

Daylighting:ReferencePoint,
Core_Retail_DaylRefPt1,    !- Name
Core_Retail,              !- Zone Name
0,                        !- XCoordinate of Reference Point
14.2,                     !- YCoordinate of Reference Point
0.0;                      !- ZCoordinate of Reference Point

The following will set the X coordinate of the reference point to 0:

daylgtctrl = idf_file.idfobjects["Daylighting:ReferencePoint".upper()][0]
daylgtctrl.XCoordinate_of_Reference_Point = 0

Will give ~~you~~you:

Daylighting:ReferencePoint,
Core_Retail_DaylRefPt1,    !- Name
Core_Retail,              !- Zone Name
0,                        !- XCoordinate of Reference Point
14.2,                     !- YCoordinate of Reference Point
0.0;                      !- ZCoordinate of Reference Point

The following will set the X coordinate of the reference point to 0:

daylgtctrl = idf_file.idfobjects["Daylighting:ReferencePoint".upper()][0]
daylgtctrl.XCoordinate_of_Reference_Point = 0

Will give you:

Daylighting:ReferencePoint,
Core_Retail_DaylRefPt1,    !- Name
Core_Retail,              !- Zone Name
0,                        !- XCoordinate of Reference Point
14.2,                     !- YCoordinate of Reference Point
0.0;                      !- ZCoordinate of Reference Point

You can also know what the fields of an object are by using .fieldnames:

daylgtctrl.fieldnames

Will give you:

['key',
 'Name',
 'Zone_Name',
 'XCoordinate_of_Reference_Point',
 'YCoordinate_of_Reference_Point',
 'ZCoordinate_of_Reference_Point']

If you know the index of the field, you can use it instead of its name as such:

daylgtctrl[daylgtctrl.fieldnames[3]] = 0

Will also give you:

Daylighting:ReferencePoint,
Core_Retail_DaylRefPt1,    !- Name
Core_Retail,              !- Zone Name
0,                        !- XCoordinate of Reference Point
14.2,                     !- YCoordinate of Reference Point
0.0;                      !- ZCoordinate of Reference Point

The following will set the X coordinate of the reference point to 0:

daylgtctrl = idf_file.idfobjects["Daylighting:ReferencePoint".upper()][0]
daylgtctrl.XCoordinate_of_Reference_Point = 0

Will give you:

 Daylighting:ReferencePoint,
Core_Retail_DaylRefPt1,    !- Name
Core_Retail,              !- Zone Name
0,                        !- XCoordinate of Reference Point
14.2,                     !- YCoordinate of Reference Point
0.0;                      !- ZCoordinate of Reference Point

You can also ~~know what the fields~~ get all field names of an object are by using .fieldnames:

daylgtctrl.fieldnames

Will give you:

 ['key',
 'Name',
 'Zone_Name',
 'XCoordinate_of_Reference_Point',
 'YCoordinate_of_Reference_Point',
 'ZCoordinate_of_Reference_Point']

If you know the index of the field, you can use it instead of its name as such:

daylgtctrl[daylgtctrl.fieldnames[3]] = 0

Will also give you:

 Daylighting:ReferencePoint,
Core_Retail_DaylRefPt1,    !- Name
Core_Retail,              !- Zone Name
0,                        !- XCoordinate of Reference Point
14.2,                     !- YCoordinate of Reference Point
0.0;                      !- ZCoordinate of Reference Point

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