Projection Dialogs

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:
  • "Local"
  • "NGVD 29 (US)"
  • "NAVD 88 (US)"
• 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.

Projection

The Projection drop-down contains the following options:

• "3TM (Alberta)"
• "10TM (Alberta)"
• "Aitoff-Wagner"
• "Alaska Conformal"
• "Albers Conic"
• "Austrian Grid"
• "Azimuthal Equidistant"
• "Belge 1972 (Belgium Lambert 1972)"
• "Bipolar Oblique Conic West"
• "Bonne"
• "British Grid"
• "Cassini Malaysia"
• "Cassini-Soldner"
• "Croatia (TM)"
• "Double Stereographic"
• "Dutch Grid (RD)"
• "Eckert IV"
• "Equidistant Conic A"
• "Equidistant Conic B"
• "Equirectangular"
• "Gall Stereographic"
• "Gauss Boaga (Italia)"
• "Gauss Krueger (6 degree zones)"
• "Gauss Krueger (Argentina)"
• "Gauss Krueger (Croatia) - HDKS"
• "Gauss Krueger (3 degree zones)"
• "Gauss Krueger Slovenia"
• "Geographic (Latitude/Longitude)"
• "Gnomonic"
• "Greek Grid"
• "Hammer-Aitoff"
• "Hotine Oblique Mercator A"
• "Hotine Oblique Mercator B"
• "Hotine Oblique Azimuth Nat. Orig."
• "Interrupted Goode Homolosine"
• "Hungarian National Grid (EOV)"
• "India Zoned Grid"
• "Irish Grid"
• "Israel Grid (New)"
• "Israel Grid (Old)"
• "Japanese Projection System"
• "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"