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U Hrvatskoj se trenutno koriste uglavnom tri Gauss-Krueger-temeljena koordinatna sustava: tzv. "zona 5", "zona 6" i "zona 16°30". Detaljna definicija ovih koordinatnih sustava nalazi se u tablici dolje. Vi�e o koordinatnim sustavima u Hrvatskoj, te problematici odre�ivanja tzv. datumske razlike na WGS84 sustav mo�ete �itati i na kartografija.hr portalu (rubrika "pitanja i odgovori"). Na ovoj stranici mo�ete skinuti datoteke-definicije koordinatnih sustava u ILWIS i ESRI formatu. Napomena: apsolutno je neophodno koristiti potpunu definiciju koordinatnog sustava, osobito prilikom integracije GPS mjerenja (u protivnom gre�ka integracije mo�e iznositi nekoliko stotina metara).
Coordinate systems in Croatia: In Croatia, three Gauss-Krueger-based coordinate systems are commonly used: so called "Zone 5", "Zone 6" and "Zone 16°30", from which only "Zone 16°30" also called "Croatia" is
the National coordinate system that covers the whole country. The details about all three can be seen in table down-below. You can also download the ILWIS coordinate system and ESRI's .prj files from this website.
Note that it is absolutely necessary that you use the complete definition of a coordinate system, especially for integration of GPS data!
Table: Coordinate systems used in Croatia.
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Coordinate system - Gauss Krueger
|
|
Western
Croatia
(Z5)
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Eastern
Croatia
(Z6)
|
Whole Croatia
(16°30'')
|
|
Projection
|
|
Transverse Mercator |
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Ellipsoid name
|
|
Bessel 1841 |
|
Semi-major axis
|
|
6377483.865 |
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Flattening
|
|
299.257223563 |
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Geodetic datum* (->WGS84)
|
dX
|
682 |
682 |
682 |
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dY
|
-203 |
-199
|
-203
|
|
dZ
|
480
|
480
|
480
|
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Central meridian
|
|
15° E |
18° E |
16°30'' |
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Central parallel
|
|
0° N |
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Scale at central meridian
|
|
0.9999
|
0.9999
|
0.9997
|
|
False origin
|
X
|
5500000
|
6500000
|
2500000
|
|
Y
|
0
|
0
|
0
|
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Minimum coordinates
|
X min
|
5350000
|
6110000
|
2243217
|
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Y min
|
4700000
|
4670000
|
4668355
|
|
Maximum coordinates
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X max
|
5900000
|
6630000
|
2731970
|
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Y max
|
5200000
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5160000
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5155714
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*Datum shift Bessel ellipsoid - WGS84, average values for Croatia:
- calculated by J. Hendrikse (from three points in Slavonia) and used in ILWIS 3.0: dX, dY, dZ = 682, -199, 480
- according to GARMIN in GPS receivers: dX, dY, dZ = 675, -205, 475
- according to NIME: dX, dY, dZ = 682, -203, 480
Croatia Zone 5 in the PROJ.4 format:
+proj=tmerc +lat_0=0 +lon_0=15 +k=0.9999 +x_0=5500000
+y_0=0
+ellps=bessel +towgs84=682,-199,480 +units=m
or more simply:
+init=epsg:31275
The complete EPSG report with all coordinate systems used in Former Yugoslavia is available here.
*In ESRI packages you will also need to define the Croatia datum. See this dbf example used in ArcPad package.
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