: 40
. , ArcMap.
:
▪
▪
▪ ArcMap
1:
, . - ArcMap . , . . , .
R2Trails Elev_Class, , . .
Elev_Class. , , .
1: ?
, Elev_Class - (short integer). , - , . 2 , - 4 . , .
: , (Subtype Field).
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2: Elev_Class ?
(Subtypes) (Code). Elev_Class. , , .
:. , . .
(Code) (Description)
2 : 7300 8800 Medium Elevation (7,300-8,800 ft)
3 : 7300 LowerElevation(Lessthan7,300 ft)
(Default Subtype). , , , . .
. , . ( TR_Condition) , , . ArcMap, TR_Condition , ( Dirt, loose rock).
: . , R2Trails . TR_Condition . ( ArcMap) R2Trails .
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(Subtype) (Default Value)
2: (Medium Elevation) , ( Packed dirt, some loose rock)
3: (LowerElevation) , ( Gravel, looserock)
R2Trails ArcMap, .