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@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@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@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@speleo.sk
https://mailman.speleo.sk/listinfo/therion
Andrew
--
_______________________________________________
Therion mailing list
Therion@speleo.sk
https://mailman.speleo.sk/listinfo/therion