On 08/07/2019 02.13, Nyall Dawson wrote: > On Mon, 1 Jul 2019 at 11:11, Nyall Dawson <[email protected]> wrote: >> >> On Fri, 28 Jun 2019 at 17:29, Nyall Dawson <[email protected]> wrote: >>> >>> On Fri, 28 Jun 2019 at 17:11, Richard Duivenvoorde <[email protected]> >>> wrote: >>>> >>>> On 28/06/2019 01.28, Nyall Dawson wrote: >>>>>> That one shows 'just' 2 options (added to the qgis.nl post) >>>>>> IF the green line is just the first one, but we are not sure if it is >>>>>> the right one... should we make it green anyway? >>>> >>>>> Ah, on proj 6 builds, we ARE sure that the first/green one is the most >>>>> recommended one :) That's because proj gives us an ordered list of >>>>> possible operations in order of preference (calculated using all >>>>> proj's internal smarts and knowledge about the accuracy of different >>>>> transform operations). >>>> >>>> Mmm, then my last question, after this I'll move to proj ;-) >>>> >>>> See: >>>> >>>> http://www.qgis.nl/media/2019/06/Screenshot-20190627104509-716x467.png >>>> >>>> This is QGIS with proj6: As you see there are 2 options. The first one >>>> being green 'numbered' (3). But the bottom one having a higher number >>>> between brackets having a (4) between brackets? >>>> >>>> Now /me wondering what these numbers are: because given your answer >>>> above, the green one being 'THE one' :-) I wonder what this other >>>> numbers are (I was wondering ordered by date/relevance or so)?? >>> >>> These are how proj identifies the coordinate operation -- I'm not >>> entirely sure what they represent, but I assume they are just indexes. >> >> Just for followers of this thread - conversation moved to the proj >> mailing list, and looks like it will result in improved descriptive >> strings coming as a result... > > Following all this discussion, here's a quick comparison of before vs current: > Before: http://www.qgis.nl/media/2019/06/Screenshot-20190627104509-716x467.png > Now: > https://user-images.githubusercontent.com/1829991/60775333-f4f4db80-a164-11e9-8076-225ba2322aba.png > > Iterative design at its finest ;)
Thanks Nyall, nice work! I will update the blogpost and hope that we can add a short intro int crs & transformations to the docs there: https://docs.qgis.org/testing/en/docs/user_manual/working_with_projections/working_with_projections.html Regards, Richard _______________________________________________ QGIS-Developer mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
