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<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Hi Chris,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">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.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">/Kristian<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="mso-fareast-language:DA">Fra:</span></b><span style="mso-fareast-language:DA"> Qgis-user [mailto:qgis-user-bounces@lists.osgeo.org]
<b>På vegne af </b>Franklin, Chris - Perth<br>
<b>Sendt:</b> 30. november 2017 03:47<br>
<b>Til:</b> Qgis-user@lists.osgeo.org<br>
<b>Emne:</b> [Qgis-user] Custom Projection in QGIS<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">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
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">The parameters I have been given are:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">rl_correct = -24.273<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">yd1= 22737.030<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">xd1= 17332.250<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">yd2= 25987.560<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">xd2= 17893.870<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">ym1= 1193806.320<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">xm1= 820224.327<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">ym2= 1196784.417<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">ym2= 821648.929<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">Note the Z adjustment<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">This results in the following transformation<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">Scale= 1.00801358<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">Rotation= 15.4548<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">Shift x= 1171069.29<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif">Shift y= 802891.987<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Can someone point me in the right direction as to where these are entered?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">+proj=utm +zone=29 +datum=WGS84 +units=m +no_defs<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Thanks <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Chris<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
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