Latest Contributions by LorenDawe

The projection "MAGNA_Bogota_DC_2005" has the following parameters: False_Easting: 92334.879 False_Northing: 109320.965 Longitude_Of_Center: -74.14659166666668 Latitude_Of_Center: 4.680486111111112 Height: 2550.0 Linear Unit: Meter (1.0) However, the projection library proj.4 does not support a height parameter as input,  rather the more standard TM parameter scale (k_0). Does anyone know how I would define the above projection in proj.4? ... View more

A client has provided a PRJ file (attached) that contains a "Height" parameter: Well-known text PROJCS["PTL1_Buenaventura",GEOGCS["GCS_MAGNA",DATUM["D_MAGNA",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["IGAC_Plano_Cartesiano"],PARAMETER["False_Easting",100000.0],PARAMETER["False_Northing",100000.0],PARAMETER["Longitude_Of_Center",-76.85094890833329],PARAMETER["Latitude_Of_Center",3.85779813888889],PARAMETER["Height",315.0],UNIT["Meter",1.0]] I have three questions regarding this: 1 - What does this refer to? 2 - Does this parameter affect the horizontal coordinates in a transformation/re-projection? 3 - Can this be applied using PROJ4? If so, how? Thanks in Advance, Loren. ... View more