Projection Dialogs: Difference between revisions

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[[File:SMS - Create New Datum dialog.png|thumb|right|The ''Create New Datum'' dialog which appears when the '''Add Datum...''' button is clicked in the ''Select Projection'' dialog.]]
[[File:SMS - Create New Datum dialog.png|thumb|right|The ''Create New Datum'' dialog which appears when the '''Add Datum...''' button is clicked in the ''Select Projection'' dialog.]]


The ''Create New Datum'' dialog allows for the creation of a new datum if the available datums (the list above) do not cover the needs of the user. There are a number of different fields and options in this dialog. These are detailed below:
The ''Create New Datum'' dialog (right) allows for the creation of a new datum if the available datums (the list above) do not cover the needs of the user. There are a number of different fields and options in this dialog. These are detailed below:
*''Datum Name'': Enter the desired name for the new datum.
*''Datum Name'': Enter the desired name for the new datum.
*''Abbreviation (Optional)'': An optional field for a shortened version of the ''Datum Name''.
*''Abbreviation (Optional)'': An optional field for a shortened version of the ''Datum Name''.
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*"Sphere Radius 6378388 m"
*"Sphere Radius 6378388 m"
*"War Office (McCaw 1924)"
*"War Office (McCaw 1924)"
*"WGS66"
*"[https://en.wikipedia.org/wiki/World_Geodetic_System#The_United_States_Department_of_Defense_World_Geodetic_System_1966 WGS66]"
*"WGS72"
*"[https://en.wikipedia.org/wiki/World_Geodetic_System#The_United_States_Department_of_Defense_World_Geodetic_System_1972 WGS72]"
*"WGS84"
*"[https://en.wikipedia.org/wiki/World_Geodetic_System#A_new_World_Geodetic_System:_WGS_84 WGS84]"
*"WI County - Burnett"
*"WI County - Burnett"
*"WI County - Chippewa"
*"WI County - Chippewa"
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*''Datum Transformation Method'': This section consists of four radio button options:
*''Datum Transformation Method'': This section consists of four radio button options:
**''3-parameter (Molodensky) Transformation'':  
**''3-parameter (Molodensky) Transformation'': Uses the [https://en.wikipedia.org/wiki/Geographic_coordinate_conversion#Molodensky_transformation Molodensky transformation] method.
**''7-parameter (Bursa-Wolfe) Transformation (Position Vector Rotation)'':  
**''7-parameter (Bursa-Wolfe) Transformation (Position Vector Rotation)'': Uses [http://www.bluemarblegeo.com/knowledgebase/calculator/datum_shifts/Seven_Parameter_PVR.htm seven parameters]: "three translations, three rotations, and a scale correction factor".
**''7-parameter (Bursa-Wolfe) Transformation (Coordinate Frame Rotation)'':  
**''7-parameter (Bursa-Wolfe) Transformation (Coordinate Frame Rotation)'': Variation of the above.
**''Custom Shift Based on Control Point File'': Selecting this options brings up an ''Open'' dialog, allowing the user to select a Control Point File with the necessary data to set the Datum Transformation Method.
**''Custom Shift Based on Control Point File'': Selecting this options brings up an ''Open'' dialog, allowing the user to select a Control Point File with the necessary data to set the datum transformation method. This file is a text file with entries (one per line) in the following format:
***<code>deg_longitude_in_new_datum,deg_latitude_in_new_datum,deg_longitude_in_WGS84,deg_latitude_in_WGS84</code>
*''Shifts to WGS84 (meters)'': This section allows the ''X Shift'', ''Y Shift'', and ''Z Shift'' to be manually set for the new datum.
*''Shifts to WGS84 (meters)'': This section allows the ''X Shift'', ''Y Shift'', and ''Z Shift'' to be manually set for the new datum.
*''Rotation to WGS84'': This section allows setting the X, Y, and Z in for the new datum by selecting from the ''Units'' drop-down:
*''Rotation to WGS84'': This section allows setting the X, Y, and Z in for the new datum by selecting from the ''Units'' drop-down:
**arc-seconds
**[https://en.wikipedia.org/wiki/Minute_and_second_of_arc arc-seconds]
**radians
**[https://en.wikipedia.org/wiki/Radian radians]
**micro-radians
**[https://en.wikipedia.org/wiki/Radian#Multiples_of_radian_units micro-radians]
*''Scale Correction to WGS84 (parts per million)'': This section allows setting the ''Scale (ppm)'' for the new datum.
*''Scale Correction to WGS84 (parts per million)'': This section allows setting the ''Scale (ppm)'' for the new datum.


Revision as of 22:35, 14 September 2015

There are two main projection dialogs used in SMS, GMS< and WMS: The Display Projection dialog, and the Object Projection dialog. From each of these, the Select Projection dialog can be accessed. More detailed information about each projection and the information in these dialogs can be found in the Projections article.

Display Projection Dialog

File:DisplayProjection.jpg
Example of the Display Projection dialog.

The Display Projection dialog contains settings which are applied to the project as a whole.

Horizontal section

The Horizontal section of the dialog has two options available via radio buttons:

  • No projection - This option doesn't set a projection, and only allows adjusting the horizontal Units used in the project. The available units include:
    • "U. S. Survey Feet". Equal to 1200⁄3937 meters, approximately 0.3048006096 meters.
    • "International Feet". Equal to 0.3048 meters.
    • "Meters". Equal to the distance traveled by light in vacuum within 1⁄299792458 of a second.
    • "Inches". Equal to 1⁄39.37 of a meter.
    • "Centimeters". Equal to 1⁄100 of a meter.
  • Global projection - Clicking on the Set Projection button allows more specific projections to be set. These are listed below in the Select Projection Dialog section.

Vertical section

The Vertical section has two drop-down boxes:

  • Projection, giving the following options:
  • Units, giving the following options:
    • "U. S. Survey Feet"
    • "International Feet"
    • "Meters"
    • "Inches"
    • "Centimeters"

Object Projection Dialog

The Object Projection dialog is the same as the Display Projection dialog, but only applies to one specific object (e.g., a coverage or a mesh). It can be accessed by selecting the object in the Project Explorer, then right-clicking on it and selecting Projection... from the menu.

Select Projection Dialog

The Select Projection dialog.

The Select Projection dialog is accessed through the Set Projection... button in either the Display Projection dialog or the Object Projection dialog. It allows setting global projections for the project or for a specific object. It contains a single Projection tab with several options and sections.

All lists of drop-down selections are given in the order in which they appear in the drop-down.

Projection and Zone

There are many options available from the Projection drop-down:

List of Projections  
The Projection drop-down contains the following options. If there is Zone information for a particular projection, that projection will be bolded and the zones will be listed directly beneath the projection as a collapsed list. Click on "Show" to view the zones.
  • "3TM (Alberta)"
  • "10TM (Alberta)"
  • "Aitoff-Wagner"
  • "Alaska Conformal"
  • "Albers Conic"
  • "Austrian Grid"
  • "Gauss Krueger (6 degree zones)"
  • "Gauss Krueger (Argentina)"
  • "Gauss Krueger (Croatia) - HDKS"
  • "Gauss Krueger (3 degree zones)"
  • "Korea TM"
  • "Krovak"
  • "Laborde (Madagascar)"
  • "Lambert Azimuthal Equal-Area"
  • "Lambert Conformal Conic"
  • "Lambert Cylindrical Equal-Area"
  • "Lambert (Marta Software)"
  • "Lambert (NOAA Port)"
  • "Lambert I Carto (Northern France)"
  • "Lambert I Nord (Northern France)"
  • "Lambert II Centre (Central France)"
  • "Lambert II Carto Étendu (Wide)"
  • "Lambert III Carto (Southern France)"
  • "Lambert III Sud (Southern France)"
  • "Lambert IV Carto (Corsica)"
  • "Lambert IV Corse (Corsica)"
  • "Lambert-93"
  • "Marta Software Satellite"
  • "Mercator"
  • "Mercator (Lowrance Special)"
  • "Mercator (Navionics Special)"
  • "MGA (Map Grid of Australia)"
  • "Mollweide"
  • "MSTM (Mississippi Transverse Mercator)"
  • "MTM (Eastern Canada)"
  • "Natural Earth"
  • "New Brunswick Double Stereographic"
  • "Norwegian Transverse Mercator (NTM)"
  • "Swiss Grid"
  • "Swiss Grid (LV95)"
  • "System 1965 (Uklad 1965) [Poland]
  • "Van der Grinten"
  • "Vertical Near-Side Perspective"
  • "Wagner VII (Hammer-Wagner)"
  • "Winkel I"
  • "Winkel Tripel"
  • "Wisconsin County Reference System (WISCRS)"
  • "WTM83/91 (Wisc. Transverse Mercator)"

To the right of the Projection drop-down are three buttons:

  • Load From File...: Allows a projection to be loaded from an external file. The accepted file formats are PRJ and SPR (PRJ is preferable).
  • Save to File...: Allows the projection information set in this dialog to be saved as a PRJ file.
  • Init from EPSG...: Opens a dialog where an EPSG Projection Code can be entered.

Datum

Datums in italics are placeholders for the collapsed list directly below that entry.

List of Datums  
  • Adindan
  • Ain el Abd (Bahrain)
  • Ain el Abd (Saudi Arabia)
  • American Samoa 1962 - NADCON
  • Aratu (Brazil)
  • ARC1950
  • ARC1960
  • Astro B4 (Sorol Atoll)
  • Astro Beacon
  • Astro DOS 71/4
  • Astronomic Station 1952
  • ATS77 (Nova Scotia) - NTv2 Grid
  • Australian Geodetic 1966 - NTv2 Grid
  • Australian Geodetic 1984 - NTv2 Grid
  • BD72 (Belgium 1972)
  • Beijing 1954
  • Bessel 1841 (Italia) [Castanea d. F]
  • Bessel 1841 (Italia) [Genova]
  • Bessel 1841 (Italia) [Monte Mario]
  • Bessel 1841 [Greenwich]
  • Bogota Observatory
  • Bukit Rimpah
  • Camacupa
  • Camp Area Astro
  • Campo Inchauspe (Argentina)
  • Cape
  • Carthage
  • Chad (WG1998)
  • Clarke 1866 Authalic Sphere
  • Combani 1950 (Mayotte)
  • Corrego Alegre (Brazil)
  • Croatia HDKS Grid
  • CSJ 67 (Gayane Francaise)
  • D-48 Slovenia
  • Dealul Piscului 1933 (Romania)
  • Dealul Piscului 1970
  • Deir Ez Zor (Syria)
  • Dutch (RD)
  • Easter Island 1967
  • ED50
  • ED79
  • ED87
  • Egypt 1907
  • Egypt Gulf of Suez S-650 TL
  • Estionia 1997
  • ETRF2000 - RDN
  • ETRS89
  • FD 1958 (Iraq)
  • Finland/Hayford
  • Fort Marigot (St Maarten)
  • GDA 94 (Australian Geodetic 1994)
  • GDM2000 (Malaysia)
  • GGRS87 (Greece)
  • Google Maps (Sphere Radius 6378137)
  • GRS80 Ellipsoid
  • Guadeloupe 1948
  • Guam 1963
  • Hartebeesthoek 1994 (S. Africa)
  • Herat North (Afghanistan)
  • Hermannskogel
  • HJorsey 1955
  • Hong Kong 1963
  • Hong Kong 1980
  • Hu Tzu Shan
  • Hungarian Datum 1972
  • IGN72 Grande Terre (New Caledonia)
  • Indian (see below):
  • Indonesia 1974
  • Ireland 1965
  • Ireland 1965 (1975 Adjustment)
  • Irenet95
  • ISN93 (Iceland)
  • ISTS 073 Astro
  • JAD2001 (Jamaica 2001)
  • JAD69 (Jamaica 1969)
  • JGD2000 (Japan)
  • Jordan
  • Kertau 1948
  • Kertau 1948 (Malaysia)
  • KKJ (Finnish Grid)
  • Korean 1985
  • Korean 1995
  • Korean Geodetic Datum (KGD)
  • Krasovsky 1940
  • La Canoa (Venezuela)
  • Le Pouce 1934 (Mauritius)
  • Leigon (Ghana)
  • Lisbon/Lisboa 1937 (DLx)
  • LKS92 (Latvia)
  • Lowrance
  • Luref (Luxembourg)
  • Luzon (Philippines)
  • M'Poraloko (Gabon)
  • Malongo 1987
  • Martinique 1938
  • Merchich (Morocco)
  • MGI Austria
  • MGI Croatia/Serbia
  • MGI Slovenia
  • Minna (Cameroon)
  • Minna (Nigeria)
  • MN County (see below):
  • Modis Spheroid (6371007.181 M)
  • NAD27
  • NAD83
  • Nahrwan
  • Naparima (UAE)
  • New Israeli Datum (NID)
  • NGO 1948 (Greenwich Meridian)
  • NGO 1948 (Oslo Meridian)
  • North Sahara 1959
  • North Sahara 1959 (Hassi Messaoud)
  • NTF France (Greenwich Meridian)
  • NTF France (Paris Meridian)
  • NZGD2000
  • NZGD49
  • Observatorio 1966
  • Ocotepeque (Costa Rica)
  • Old Hawaiian Mean
  • Old Israeli Datum (OID)
  • Oman
  • OSGB36 (7-Param Transform)
  • OSGB36 (Best Transform)
  • OSGB36 (NTv2 Grid)
  • Pico De Las Nieves
  • Pointe Noire 1948 (Congo)
  • Portuguese 1973 (Datum 73)
  • POSGAR94 (Argentina)
  • Potsdam 1983 (Germany - Ferro)
  • Potsdam/DHDN (Germany - Ferro)
  • Potsdam/DHDN (Germany)
  • Provisional South Chilean
  • PRS92 (Philippines)
  • PSAD56 (Prov. S. American 1956)
  • PSD93 (Oman)
  • Puerto Rico
  • Qatar 1974
  • QND95 (Qatar)
  • Qornoq
  • Reunion Island
  • Reykjavik 1900
  • RGF-93
  • RGFG95 (Guyane)
  • RGM04 (Mayotte)
  • RGNC91-93 (New Caledonia)
  • RGR92 (Reunion)
  • RGSPN06 (St Pierre et Miquelon)
  • Rome 1940 [Monte Mario] (Greenwich)
  • Rome 1940 [Monte Mario] (Rome)
  • RT38 (Greenwich)
  • RT38 (Stockholm)
  • RT90
  • S-42 (see below)
  • S-JTSK (Czech Republic)
  • Sao Braz
  • Schwarzeck (Namibia)
  • Sirgas 2000
  • Solomon 1968 (GUX 1 Astro)
  • South American 1969
  • South American 1969 (Brazil)
  • Southeast Base
  • Southwest Base
  • Sphere (Radius 6378137M)
  • STM1987 (DNAG)
  • Sweref99 (Sweden)
  • Swiss Grid (CH1903)
  • Swiss Grid (CH1903+)
  • Tananarive 1925 (Greenwich)
  • Tananarive 1925 (Paris)
  • Tete (Mozambique)
  • Timbalai 1948
  • Tokyo
  • Trinidad 1903
  • TWD67 (Taiwan)
  • VN-2000 (Vietnam)
  • WGS72
  • WGS84
  • WI County (see below):
  • Xian 1980 (China)
  • Yacare (Uruguay)
  • Zanderij (Suriname)

Create New Datum dialog

The Create New Datum dialog which appears when the Add Datum... button is clicked in the Select Projection dialog.

The Create New Datum dialog (right) allows for the creation of a new datum if the available datums (the list above) do not cover the needs of the user. There are a number of different fields and options in this dialog. These are detailed below:

  • Datum Name: Enter the desired name for the new datum.
  • Abbreviation (Optional): An optional field for a shortened version of the Datum Name.
  • Prime Meridian (Degrees): Enter the prime meridian.
  • Ellipsoid (Spheroid) Selection: This section consists of a drop-down list and two buttons:
    • Add Ellipsoid...: This button brings up the Custom Ellipsoid Setup dialog. It has the following fields:
      • Ellipsoid Name: Enter the desired name of the ellipsoid.
      • Semi-Major Axis (meters): Enter the length of the semi-major axis.
      • The two radio button options are:
        • Use Semi-Minor Axis of: Enter the length of the the semi-minor axis.
        • Use flattening of: Enter a number representing the flattening.
    • Edit Ellipsoid...: Allows editing of a custom ellipsoid (one created with the Add Ellipsoid... button).
    • The drop-down list options are:
drop-down list options  
  • "Airy"
  • "ATS77"
  • "Australian National"
  • "Bessel (modified)"
  • "Bessel 1841"
  • "Bessel Namibia (GLM)"
  • "Clarke 1858"
  • "Clarke 1866"
  • "Clarke 1866 (Michigan)"
  • "Clarke 1880"
  • "Clarke 1880 (Benoit)"
  • "Clarke 1880 (IGN)"
  • "Clarke 1880 (Palestine)"
  • "Clarke 1880 (RGS)"
  • "Danish 1876"
  • "Everest 1830"
  • "Everest 1830 (1937 Adjustment)"
  • "Everest 1830 (1867 Definition)"
  • "Everest 1830 (1975 Adjustment)"
  • "Everest 1956"
  • "GRS 1967 (Indonesia 1974)"
  • "GRS 1967 Modified"
  • "GRS 1980"
  • "Helmert 1906"
  • "Hough"
  • "International 1909 (Hayford/Intl 1924)"
  • "International 1967"
  • "Krassovsky"
  • "Mercury 1960"
  • "MN County - Anoka"
  • "MN County - Becker"
  • "MN County - Beltrami North"
  • "MN County - Beltrami South"
  • "MN County - Benton"
  • "MN County - Big Stone"
  • "MN County - Blue Earth"
  • "MN County - Brown"
  • "MN County - Carlton"
  • "MN County - Carver"
  • "MN County - Cass North"
  • "MN County - Cass South"
  • "MN County - Chipewa"
  • "MN County - Chisago"
  • "MN County - Cook North"
  • "MN County - Cook South"
  • "MN County - Cottonwood"
  • "MN County - Crow Wing"
  • "MN County - Dakota"
  • "MN County - Dodge"
  • "MN County - Douglas"
  • "MN County - Faribault"
  • "MN County - Fillmore"
  • "MN County - Freeborn"
  • "MN County - Goodhue"
  • "MN County - Grant"
  • "MN County - Hennepin"
  • "MN County - Houston"
  • "MN County - Isanti"
  • "MN County - Itasca North"
  • "MN County - Itasca South"
  • "MN County - Jackson"
  • "MN County - Kanabec"
  • "MN County - Kandiyohi"
  • "MN County - Kittson"
  • "MN County - Koochiching"
  • "MN County - Lac Qui Parle"
  • "MN County - Lake of the Woods North"
  • "MN County - Lake of the Woods South"
  • "MN County - Le Sueur"
  • "MN County - Lincoln"
  • "MN County - Lyon"
  • "MN County - Mahnomen"
  • "MN County - Marshall"
  • "MN County - Martin"
  • "MN County - McLeod"
  • "MN County - Meeker"
  • "MN County - Morrison"
  • "MN County - Mower"
  • "MN County - Murray"
  • "MN County - Nicollet"
  • "MN County - Nobles"
  • "MN County - Norman"
  • "MN County - Olmsted"
  • "MN County - Ottertail"
  • "MN County - Pennington"
  • "MN County - Pine"
  • "MN County - Pipestone"
  • "MN County - Polk"
  • "MN County - Pope"
  • "MN County - Ramsey"
  • "MN County - Red Lake"
  • "MN County - Redwood"
  • "MN County - Renville"
  • "MN County - Rice"
  • "MN County - Rock"
  • "MN County - Roseau"
  • "MN County - Scott"
  • "MN County - Sherburne"
  • "MN County - Sibley"
  • "MN County - St Louis Central"
  • "MN County - St Louis North"
  • "MN County - St Louis South"
  • "MN County - Stearns"
  • "MN County - Steele"
  • "MN County - Stevens"
  • "MN County - Swift"
  • "MN County - Todd"
  • "MN County - Traverse"
  • "MN County - Wabasha"
  • "MN County - Wadena"
  • "MN County - Waseca"
  • "MN County - Watonwan"
  • "MN County - Winona"
  • "MN County - Wright"
  • "MN County - Yellow Medicine"
  • "Modified Airy"
  • "Modified Everest 1948"
  • "Modified Mercury 1968"
  • "South America 1969"
  • "Southeast Asia"
  • "Sphere Radius 6356752 m"
  • "Sphere Radius 6370997 m"
  • "Sphere Radius 6371000 m"
  • "Sphere Radius 6371007.181 m"
  • "Sphere Radius 6371204 m"
  • "Sphere Radius 6378137 m"
  • "Sphere Radius 6378388 m"
  • "War Office (McCaw 1924)"
  • "WGS66"
  • "WGS72"
  • "WGS84"
  • "WI County - Burnett"
  • "WI County - Chippewa"
  • "WI County - Douglas"
  • "WI County - Marathon"
  • "WI County - Sheboygan"
  • "WI County - Taylor"
  • "Xian 1980"
  • Datum Transformation Method: This section consists of four radio button options:
    • 3-parameter (Molodensky) Transformation: Uses the Molodensky transformation method.
    • 7-parameter (Bursa-Wolfe) Transformation (Position Vector Rotation): Uses seven parameters: "three translations, three rotations, and a scale correction factor".
    • 7-parameter (Bursa-Wolfe) Transformation (Coordinate Frame Rotation): Variation of the above.
    • Custom Shift Based on Control Point File: Selecting this options brings up an Open dialog, allowing the user to select a Control Point File with the necessary data to set the datum transformation method. This file is a text file with entries (one per line) in the following format:
      • deg_longitude_in_new_datum,deg_latitude_in_new_datum,deg_longitude_in_WGS84,deg_latitude_in_WGS84
  • Shifts to WGS84 (meters): This section allows the X Shift, Y Shift, and Z Shift to be manually set for the new datum.
  • Rotation to WGS84: This section allows setting the X, Y, and Z in for the new datum by selecting from the Units drop-down:
  • Scale Correction to WGS84 (parts per million): This section allows setting the Scale (ppm) for the new datum.

Planar Units

Parameters

In the Parameters section, the Attribute and Value columns contain information specific to the Projection and Zone selected.

v • e
Projections
UTM:Africa  •   Asia  •   Australia  •   Europe  •   North America  •   South America
State Plane:Alaska  •   Hawaii  •   Mideast  •   Midwest  •   New England  •   Northwest  •   South Central  •   Southeast  •   Southwest  •   Virginia Area
OtherCPP   •   Geographic
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