QGis - New Projection Settings¶
How to create a new projection in QGis¶
To create a new projection in QGis, go to menu "Settings", and click on "Custom Projections".
A pop-up window appears with a list of all projections defined in QGis projects used by the user so far.
Click on the green "+" sign on the right top part of the window to create a new projection.
In the "Name" box, type "TM CSRAUSPOS SF1" (which means TM = Transverse Mercator projection; CSRAUSPOS = theparameters for this projection are derived from the processing of DGPS raw data by AUSPOS - Online GPS Processing Service - https://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/auspos; SF1 = Scale Factor is 1).
In the "Format" dropdown list, select "Proj String (legacy - Not Recommended)"
In the "Parameters" box, paste the following "+proj=tmerc +lat_0=12.01605433+lon_0=79.80998934 +k=1 +x_0=370455.630 +y_0=1328608.994 +ellps=WGS84+towgs84=0,0,0,0,0,0,0 +units=m +no_defs".
Finally, click on OK.
In a more explicit way, the parameters mean the following:
Map Projection: TransverseMercator (TM)
False Easting: 370455.6300
False Northing: 1328608.9940
Latitude of Origin: 12°00'57.79560" (DMS) 12.01605433 (DD)
Central Meridian: 79°48'35.96164" (DMS) 79.80998934 (DD)
Scale Factor: 1.00000000
Zone Width: 6.0°