[Qgis-user] CRS Errors

[Tyler Veinot]

So bug report?... My $length calcs are messed up too, I had to make a field
and use ArcGIS to get the lengths and then go back to QGIS and use the
field value for my script. I tried turning off the geoid in the settings
and set the measurements to use planametric but it didn't work.
I really don't like QGIS changing my CRS's, and so far keeping me locked
out of making custom transformations using my own GSB files. In the past I
had to make my own prj's to get certain surveys to translate into NAD83
properly.
Well anyway, I am going to muddle along for now hopefully a solution
presents itself.
Thanks for the reply;
TYler

On Wed, 11 Mar 2020 at 12:11, Stewart Holt <stewartbholt at gmail.com> wrote:

> Yes, I have also noticed this. I think it started in some point rev of
> 3.10.x. I still see it in 3.12. Most of my work is using a WMS layer with
> EPSG:3857. The ellipsoidal calculation would need to start with coordinates
> in degrees and I wonder if it is passing the rectangular coordinates. I
> think this either used to work or the default measurement used to be
> cartesian and I never tried ellipsoidal because I am usually concerned with
> distances of a few meters.
>
> Stewart
>
> On Wed, Mar 11, 2020 at 9:17 AM Tyler Veinot <tylerkveinot at gmail.com>
> wrote:
>
>> Has anyone had this issue?
>> My measurements when using the ellipsoidal measur are in the millions of
>> meters for things that are only a few hundred or less meters long. It isn't
>> a unit issue because I tried dividing for cm, mm, dm and the
>> measurements don't add up. If I go to cartesian the measurements look fine.
>> Before this was happening my QGIS was also assigning epsg 2292 to my
>> shapfiles having an epsg of 2954. I check the file geodatabase they were
>> exported from and the proj files and they all reference EPSG 2954 and not
>> EPSG 2292. Also All new projects are defaulted to 2954 so no
>> transformations should be necessary.
>> Since updating to QGIS3 I noticed this transformation section in the
>> settings under CRS, is there something here I inadvertently changed?
>> I do have my own GSB files for coordinate transformations from survey
>> grids but I have not figured out how to employ them yet in QGIS3 so I don't
>> think they would be an issue.
>> Anyone else have a similar thing start to happen?
>> Thanks;
>> Tyler
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