Differences

This shows you the differences between two versions of the page.

--- georef [2018/10/12 04:09] – [Coordinate Transformation] allchin09
+++ georef [2021/03/07 22:40] – [Coordinate Conversion] allchin09
@@ Line 93: / Line 93: @@
 |s|-3.2756552|ppm|
-Combining these with the known values of the ellipsoid parameters of the ANS, a custom CRS can be defined in PROJ to allow transform between ANS and GDA94 coordinates. This can then be used in QGIS to 'reproject' ANS georeferenced rasters into a GDA94 CRS.
+Combining these with the known values of the ellipsoid parameters of the ANS, a custom CRS can be defined in PROJ to allow transform between ANG and GDA94 coordinates. This can then be used in QGIS to 'reproject' ANG georeferenced rasters into a GDA94 CRS.
-The following PROJ string was used to define the ANS CRS:
+The following PROJ string was used to define the ANG CRS:
 ''+proj=longlat +a=6378339.78 +rf=294.26 +towgs84=195.056526,-112.959677,-172.456394,3.59354054,5.39693644,-1.34857381,-3.2756552 +no_defs''
@@ Line 102: / Line 102: @@
 ==== Coordinate Conversion ====
-[[https://proj4.org/|PROJ]] is a useful program here.
+[[https://proj.org/|PROJ]] is a useful program here.
+Note that PROJ is being updated and dramatically changed - a useful overview [[https://www.gaia-gis.it/fossil/libspatialite/wiki?name=PROJ.6|here]].
 Handy tables of parameters can be found [[https://en.wikibooks.org/wiki/PROJ.4|here]]
-'Clarke Coordinate' or the 'ANG' (Australian National Grid) have the following parameters:
+'Clarke Coordinates' or the 'ANG' (Australian National Grid) have the following parameters:
 ^Parameter       ^ Value         ^ Units        ^
@@ Line 125: / Line 127: @@
 | zone latitude origin | 34S     | degrees      |
 | scale factor   | 1             |              |
+Other relevant values
+| zone 8      |
 Note: