[GIS] How to convert the file with projections in meters to Lat-Long in QGIS ar Erdas Imagine

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I have file in Lambert Conformal conic format for the data of Australia, Its coordinates are in meters. I want to convert it to Latitude-Longitude format. Which Projection, Spheroid and Datum I should be using if I want to convert the projections in QGIS or Erdas Imagine?

The current Specification of the file is as follow:
Projection: Lambert Conformal Conic
Spheroid: GRS 1980
Datum: GDA94-ICSM
Map Units: Meters

Many Thanks in Advance for the Answer.

Best Answer

If you want to permanently convert the data, export it to a new projection. If you just want it displayed with the Lat Long, select the CRS control down in the bottom right of the QGIS screen and change the CRS to WGS84.

Related Solutions

[GIS] How to create a .prj file with the following projection parameters

A Lambert conformal Conic projection in ArcGIS desktop, requires the following parameters:

False Easting
False Northing
Central Meridian
Standard Parallel 1
Standard Parallel 2
Scale factor
Latitude of origin

Now once we know which parameter is which, we can create a projection file as required.

To do this, follow these steps:

In ArcCatalog, right click on your shapefile and go to XY Coordinate system.
We cannot directly create a new projection, but we can modify an existing projection.
Hence click on select.
Navigate to Projected Coordinate System>>Continental>.Asia>>Asia Lambert Conformal Conic.
Press 'Add'
Click on 'Modify'
You can then edit the parameters one by one by looking at the metadata.

ArcGIS Desktop – Setting Scale Factor for Lambert Conformal Conic (LCC) Projection in ArcGIS Desktop

In comments, @whuber says,

If you click on the Name combobox and re-select "Lambert_Conformal_Conic", ArcGIS will surprise you: look for the scale factor magically to appear above "Latitude_Of_Origin."

The reason for this is because, in Esri software, the Lambert conformal conic (LCC) projection is "overloaded." It supports parameters for two common variants:

one standard parallel plus a scale factor
two standard parallels

If you attempt to edit an existing LCC definition, the display already has a list of the parameters used by that definition. Depending on which variant it is, it will either omit the scale factor or the second standard parallel parameter. If you re-initialize the projection by switching to another projection and then back, the complete list of parameters will be shown.

Best Answer

Related Solutions

[GIS] How to create a .prj file with the following projection parameters

ArcGIS Desktop – Setting Scale Factor for Lambert Conformal Conic (LCC) Projection in ArcGIS Desktop

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