This article explains how to select the correct vertical coordinate reference system, geoid, or geoid height in PIX4Dmatic.

PIX4Dmatic and PIX4Dsurvey support global geoids (EGM84, EGM96, and EGM2008) and local geoids, for example, GEOID12B in the US and OSGM15 in the UK.

For local geoids that are not included in the PIX4Dmatic and PIX4Dsurvey database, it is possible to specify the *Geoid height *value to convert between ellipsoidal and orthometric heights.

Video tutorial: How to use vertical coordinate systems and geoids in PIX4Dmatic

**IN THIS ARTICLE**

Selecting the vertical coordinate reference system

Selecting the geoid

Selecting the geoid height

List of supported geoids

## Selecting the vertical coordinate reference system

After selecting the *Horizontal coordinate reference system*, the list of *Vertical coordinate reference systems *is available.

Only *Vertical coordinate reference systems *within the area of use of the *Horizontal coordinate reference system *are listed.

## Selecting the geoid

Several geoid models are available in the PIX4Dmatic and PIX4Dsurvey databases. The full list is available in the List of supported geoids section.

The list of available geoids depends on the selected vertical coordinate reference frame.

## Selecting the geoid height

When the geoid corresponding to the selected vertical reference frame is not available, it is possible to specify the *Geoid height *value, which represents the height between the base ellipsoid of the horizontal coordinate reference system and the desired geoid.

The *Geoid height* value is used to convert the image geolocation (WGS 84 ellipsoid or EGM96 geoid) into the desired project coordinate system.

## List of supported geoids

Country or region | Vertical coordinate reference system | geoid | Note |
---|---|---|---|

Global | EGM96 height - EPSG:5773 | EGM96 | 15' geoid |

EGM2008 height - EPSG:3855 MSL height - EPSG:5714 |
EGM2008 | 2.5' geoid | |

Austria | EVRF2000 Austria height - EPSG:9274 | Austrian Geoid 2008 | |

Australia | AHD height - EPSG:5711 AHD (Tasmania) height - EPSG:5712 |
AUSGeoid98 | |

AHD height - EPSG:5711 AHD (Tasmania) height - EPSG:5712 |
AUSGeoid09 | ||

AHD height - EPSG:5711 | AUSGeoid2020 | ||

Canada |
CGVD28 height - EPSG:5713 | CGG2000/HTv2.0 | |

CGVD2013(CGG2013) height - EPSG:6647 | CGG2013 | ||

CGVD2013(CGG2013a) height - EPSG:9245 | CGG2013a | ||

Denmark | DVR90 height - EPSG:5799 | DVR90 | |

DNN height - EPSG:5733 | DNN | ||

Greenland | GVR2000 height - EPSG:8266 | GGEOID2000 | |

GVR2016 height - EPSG:8267 | GGEOID2016 | ||

Faroe Islands | FVR09 height - EPSG:5317 | FVR09 | |

France |
NGF-IGN69 height - EPSG:5720 | RAF09 | |

NGF-IGN69 height - EPSG:5720 | RAF18 | ||

Corsica | NGF-IGN78 height - EPSG:5721 | RAC09 | |

Iceland | ISH2004 height - EPSG:8089 | IceGeoid2011 | |

Japan | JGD2011 (vertical) height - EPSG:6695 | GSIGEO2011 | |

Mexico | NAVD88 height - EPSG:5703 | GGM10 | |

Netherlands | NAP height - EPSG:5709 | NLGEO2018 | |

New Zealand | NZVD2009 height - EPSG:4440 | NZGeoid2009 | |

NZVD2016 height - EPSG:7839 | NZGeoid2016 | ||

Norway | NN2000 height - EPSG:5941 | HREF2018b | |

Poland | Baltic 1986 - EPSG:9650 EVRF2007-PL height - EPSG:9651 |
PL-geoid-2011 | |

Slovakia | Baltic 1957 height - EPSG:8357 | DVRM05 | Only available to Baltic 1957 height |

South Africa | SA LLD height - EPSG:9279 | SAGEOID2010 | |

Spain | Alicante height - EPSG:5782 | EGM08-REDNAP | |

Sweden | RH2000 height - EPSG:5613 | SWEN17 | |

Switzerland | LN02 height - EPSG:5728 LHN95 height - EPSG:5729 |
CHGeo2004 | |

UK | Belfast height - EPSG:5732 Douglas height - EPSG:5750 Lerwick height - EPSG:5742 Malin Head height - EPSG:5731 ODN (Offshore) height - EPSG:7707 ODN height - EPSG:5701 ODN Orkney height - EPSG:5740 St. Marys height - EPSG:5749 Stornoway height - EPSG:5746 |
OSGM15 | Including Great Britain, Ireland, and North Ireland |

US | NAVD88 height - EPSG:5703 NAVD88 height (ft) - EPSG:8228 NAVD88 height (ftUS) - EPSG:6360 |
GEOID99 | |

NAVD88 height - EPSG:5703 NAVD88 height (ft) - EPSG:8228 NAVD88 height (ftUS) - EPSG:6360 |
GEOID03 | ||

NAVD88 height - EPSG:5703 NAVD88 height (ft) - EPSG:8228 NAVD88 height (ftUS) - EPSG:6360 |
GEOID06 | ||

NAVD88 height - EPSG:5703 NAVD88 height (ft) - EPSG:8228 NAVD88 height (ftUS) - EPSG:6360 |
GEOID09 | ||

NAVD88 height - EPSG:5703 NAVD88 height (ft) - EPSG:8228 NAVD88 height (ftUS) - EPSG:6360 |
GGM10 | ||

NAVD88 height - EPSG:5703 NAVD88 height (ft) - EPSG:8228 NAVD88 height (ftUS) - EPSG:6360 NMVD03 height - EPSG:6640 PRVD02 height - EPSG:6641 VIVD09 height - EPSG:6642 ASVD02 height - EPSG:6643 GUVD04 height - EPSG:6644 |
GEOID12A | ||

NAVD88 height - EPSG:5703 NAVD88 height (ft) - EPSG:8228 NAVD88 height (ftUS) - EPSG:6360 NMVD03 height - EPSG:6640 PRVD02 height - EPSG:6641 VIVD09 height - EPSG:6642 ASVD02 height - EPSG:6643 GUVD04 height - EPSG:6644 |
GEOID12B | ||

NAVD88 height - EPSG:5703 NAVD88 height (ft) - EPSG:8228 NAVD88 height (ftUS) - EPSG:6360 PRVD02 height - EPSG:6641 VIVD09 height - EPSG:6642 |
GEOID18 |

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