Hi Chris, >From your description I have no idea of what you are trying to do. It does >however look like the parameters you have is for a 2D Helmert transformation. >That is not something you can do in QGIS today. All transformations in QGIS >are carried out by PROJ.4. The good news is that in the coming version of >PROJ.4 the 2D Helmert is available (as well as a bunch of other geodetic >transformations). Eventually this will be available to you in QGIS as well.
/Kristian Fra: Qgis-user [mailto:[email protected]] På vegne af Franklin, Chris - Perth Sendt: 30. november 2017 03:47 Til: [email protected] Emne: [Qgis-user] Custom Projection in QGIS I have been given the parameters for a local grid - it's a version of UTM Zone 29N but I'm not sure where I need to change the syntax The parameters I have been given are: rl_correct = -24.273 yd1= 22737.030 xd1= 17332.250 yd2= 25987.560 xd2= 17893.870 ym1= 1193806.320 xm1= 820224.327 ym2= 1196784.417 ym2= 821648.929 Note the Z adjustment This results in the following transformation Scale= 1.00801358 Rotation= 15.4548 Shift x= 1171069.29 Shift y= 802891.987 Can someone point me in the right direction as to where these are entered? +proj=utm +zone=29 +datum=WGS84 +units=m +no_defs Thanks Chris
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