American polyconic projection
GPTKB entity
Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
map projection
|
| gptkbp:alsoKnownAs |
gptkb:polyconic_projection
|
| gptkbp:category |
cartography
|
| gptkbp:developedBy |
gptkb:Ferdinand_Rudolph_Hassler
1820s |
| gptkbp:feature |
all parallels are non-concentric circular arcs
central meridian is a straight line other meridians are complex curves |
| https://www.w3.org/2000/01/rdf-schema#label |
American polyconic projection
|
| gptkbp:notableFor |
used in early US maps
|
| gptkbp:notableProject |
conic projection
|
| gptkbp:property |
neither conformal nor equal-area
|
| gptkbp:replacedBy |
gptkb:Transverse_Mercator_projection
|
| gptkbp:usedBy |
gptkb:United_States_Coast_and_Geodetic_Survey
|
| gptkbp:usedFor |
large-scale mapping
|
| gptkbp:usedUntil |
mid-20th century
|
| gptkbp:bfsParent |
gptkb:Polyconic_projection
|
| gptkbp:bfsLayer |
7
|