[Therion] Shape files import comes up in the wrong location in QGIS

[Martin Budaj]

Andrew, check the latest commit, OSGB:xx should now work for SHP exports.

It should be also much more precise in conversions to other coordinate
systems.

M.

On Sun, Oct 27, 2024, 20:28 Andrew Atkinson <andrew at wotcc.org.uk> wrote:

> Thank you,
>
> I did think of changing the cs output. I really should have tried it.
> I could not (well still cannot) understand why the kml was right but shp
> wrong. I naively assumed they would use the same code behind the scenes!
>
> Andrew
>
>
> On 27 October 2024 19:12:30 GMT, Martin Budaj <m.budaj at gmail.com> wrote:
>
>> Hi,
>>
>> georeferencing data for shapefiles are currently not supported for
>> OSGB:xx coordinate systems, but the fix is planned.
>>
>> For now, just select utm30 as an output coordinate system (in the
>> thconfig_plan use the line
>>    cs utm30
>> before exporting shp maps).
>>
>> Cheers
>> Martin
>>
>>
>> On Fri, Oct 25, 2024 at 1:43 PM Andrew Atkinson <andrew at wotcc.org.uk> wrote:
>>
>>>
>>> Hello
>>>
>>> With Xavier promising great things with style sheets for shp files ;-)
>>> I thought I should take a look at using shp files.
>>>
>>> I'm making progress with QGIS, it is a little confusing, so there are so
>>> many  things I could have done wrong, plus I still really do not know
>>> what to search for when something does go wrong.
>>>
>>> On QGIS I've successfully imported therions kml file and the 3d produced
>>> using
>>>
>>> https://github.com/patrickbwarren/qgis3-survex-import
>>>
>>> Both of these appear about where I would expect them.
>>>
>>> When I import the .shp as a directory I'm given 4 options I don't really
>>> understand.
>>> However it appears in the sea, off the coast of Africa, I can change the
>>> projection CRS, but then it is still off the coast, but this time near
>>> the Silly Isles, so close to 0,0 for the OSGB grid. Which suggests to me
>>> that the file contains local co-ordinates of the map square ST which is
>>> how I inputted them.
>>>
>>> So why do the kml and the 3d import work in the right place and the shp
>>> not work? What am I missing?
>>> I'm sure this must have come up before in the mailing list, however, I
>>> cannot find it!
>>>
>>> I'm using
>>>
>>> http://www.cave-registry.org.uk/svn/CheddarCatchment/Goughs/
>>>
>>> the thconfig_plan file
>>>
>>> Has been edited locally to have the following exports
>>>
>>> export map -proj plan -layout local -o Goughs_Plan.pdf
>>> export map -proj plan -layout local -o Goughs_Plan.kml
>>> export map -proj plan -layout local -o Goughs_Plan.bbox
>>> export map -proj plan -layout local -o Goughs_Plan.shp
>>> export model -o Goughsth.3d
>>>
>>> Andrew
>>> ------------------------------
>>> Therion mailing list
>>> Therion at speleo.sk
>>> https://mailman.speleo.sk/listinfo/therion
>>>
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>>
>> Andrew
> --
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