Home  GeoPack GeoBasics Constants and Type Declarations GeoEllipsoidData |
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| See also: GeoEllipsoidId, GeoEllipsoidName, TGeoEllipsoid, EllipsoidMinAxEcc, EllipsoidMinAxFlat |
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GeoEllipsoidData |
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| Unit: | SDL_geobasics | | Class: | none | | Declaration: |
GeoEllipsoidData: array[TGeoEllipsoid, 1..2] of double = .... |
The constant array GeoEllipsoidData contains common reference ellipsoids used in various maps. The reference ellipsoids are defined by their semimajor (first column of the array) and semiminor axes (second column). Currently the following ellipsoids are defined:
| TGeoEllipsoid | Ellipsoid Name |
| gelWGS84 | WGS 1984 |
| gelWGS72 | WGS 1972 |
| gelWGS66 | WGS 1966 |
| gelWGS60 | WGS 1960 |
| gelClrk80 | Clarke 1880 |
| gelClrk66 | Clarke 1866 |
| gelBess41 | Bessel 1841 |
| gelBess41Jap | Bessel 1841 (Japan) |
| gelBess41Nam | Bessel 1841 (Namibia) |
| gelNewInt67 | New International 1967 |
| gelInt24 | International 1924 |
| gelEver69 | Everest 1969 (Malaysia) |
| gelEver56 | Everest 1956 (India) |
| gelEver48 | Everest 1948 |
| gelEver30 | Everest 1830 (India) |
| gelEverPak | Everest (Pakistan) |
| gelEverest | Everest |
| gelGRS80 | GRS 1980 |
| gelAiry30 | Airy 1830 |
| gelModifAiry | Modified Airy |
| gelFish68 | Fisher 1968 |
| gelFish60 | Fisher 1960 |
| gelModifFish60 | Modified Fisher 1960 |
| gelAuNat65 | Australian Nat 1965 |
| gelKrass40 | Krassovsky 1940 |
| gelHough60 | Hough 1960 |
| gelSphere | Normal Sphere |
| gelIndo74 | Indonesian 1974 |
| gelHelm06 | Helmert 1906 |
| gelSGS85 | SGS 1985 |
| gelSAm69 | South American 1969 |
| gelATS77 | ATS77 (Eastern Canada) |
| gelAuthSph | Authalic Sphere |
| gelBesselMod | Bessel Modified |
| gelCGCS2000 | CGCS2000 |
| gelClrk58 | Clarke 1858 |
| gelClrk66Mich | Clarke 1866 Michigan |
| gelClrk80 | Clarke 1880 |
| gelClrk80Arc | Clarke 1880 (Arc) |
| gelClrk80Benoit | Clarke 1880 (Benoit) |
| gelClrk80IGN | Clarke 1880 (IGN) |
| gelClrk80intfoot | Clarke 1880 (international foot) |
| gelClrk80SGA22 | Clarke 1880 (SGA 1922) |
| gelDan76 | Danish 1876 |
| gelEver30 | Everest (1830 Definition) |
| gelEver75 | Everest 1830 (1975 Definition) |
| gelGEM10C | GEM 10C |
| gelGRS67 | GRS 1967 |
| gelGRS67Mod | GRS 1967 Modified |
| gelHughes80 | Hughes 1980 |
| gelIAG75 | IAG 1975 |
| gelInt24AuthSph | International 1924 Authalic Sphere |
| gelOSU86F | OSU86F |
| gelOSU91A | OSU91A |
| gelPlessis17 | Plessis 1817 |
| gelPopVisSphere | Popular Visualisation Sphere |
| gelPZ90 | PZ-90 |
| gelStruve60 | Struve 1860 |
| gelWarOffice | War Office |
| gelHongKong63 | Hong Kong 1963 |
| gelNahrwan29 | Nahrwan 1929 |
| Hint: |
Sometimes the definition of the reference ellipsoids in the literature is given by the semimajor axis and the reciprocal flattening of the ellipsoids. You can easily calculate the reciprocal flattening by using the RecipFlattening function (version [1]). |
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