Re: [Qgis-user] CRS Errors

[Priv.-Doz. Dr. Maria Shinoto]

Hi,

last week I asked a similar question, but I am working with QGIS 3.4. There may 
be a problem with the official Japanese files I downloaded, but it looks 
similar.

My CRS is JGD2011:Plane Rectangular II for Kyūshū, which is EPSG:6670. But I 
get EPSG:102611, which cannot be found in the EPSG database, and the Japanese 
administration told me that it does not exist, but the map is OK and can be 
interpreted as EPSG 6670.

I wonder whether it is a problem with QGIS in my case as well?

Here are the data for one of those layers:

KBS

EPSG:102611 - JGD_2011_Japan_Zone_2 - Projiziert

Ausdehnung

-70895.514234683476,-184658.1692264890589286 : 
-47497.1507370446051937,-166128.1307806141558103


Thanks,
Maria




Am 11.03.2020 um 22:16 schrieb Tyler Veinot 
mailto:tylerkvei...@gmail.com>>:

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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Re: [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  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 
> 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
>> ___
>> Qgis-user mailing list
>> Qgis-user@lists.osgeo.org
>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>
>
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Re: [Qgis-user] CRS Errors

[Stewart Holt]

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  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
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
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> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
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[Qgis-user] CRS Errors

[Tyler Veinot]

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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