Gentlemen, although I haven't had time to do anything more with them,
please find attached a little .m containing a series of [R,z] keypoints
for the JET vacuum vessel, obtained finally from Philip Andrew and
Thomas Eich of TFE. Extract the file and do:

jet_mkiigb_wall_coords;
plot(rz(:,1),rz(:,2),rz(:,1),rz(:,2),'ro');axis('equal');grid;

I was hoping to find time to write a function that computed a normlaised
coordinate along the vessel perimeter (as Jean-Marc does in tcvtiles.m),
but alas this is not a trivial task and the time hasn't been found yet.
For the moment, it might be useful to you just to have the keypoints.

R.
____________________________________________

Dr. R.A.Pitts        Email: richard.pitts@epfl.ch
CRPP-EPFL, Batiment PPB, 1015 Lausanne, Switzerland
Tel: +41 21 693 6003, Fax: 5176, Secr. 3487
http://crppwww.epfl.ch/~pitts

rz=[2.0481 -0.9298
2.1316	-1.1314
2.29273	-1.3368
2.36107	-1.33684
2.3974	-1.3757
2.41037	-1.40277
2.40596	-1.38824
2.41365	-1.42575
2.41416	-1.43282
2.41403	-1.42928
2.41416	-1.47234
2.41347	-1.48059
2.41398	-1.47648
2.40894	-1.5077
2.39934	-1.5197
2.42075	-1.59625
2.42247	-1.61334
2.42235	-1.60472
2.42003	-1.6469
2.41786	-1.65826
2.41928	-1.65265
2.40695	-1.693
2.3688	-1.693
2.3157	-1.74057
2.35658	-1.74057
2.36614	-1.73964
2.37535	-1.7369
2.42729	-1.71581
2.43651	-1.71307
2.44608	-1.71214
2.52216	-1.71211
2.53175	-1.7217
2.53475	-1.7157
2.54675	-1.7157
2.54675	-1.7017
2.58073	-1.6297
2.58975	-1.61057
2.61375	-1.5597
2.61375	-1.5487
2.60575	-1.5487
2.60575	-1.52457
2.62642	-1.51033
2.64708	-1.50281
2.66775	-1.50035
2.68842	-1.50255
2.70908	-1.50976
2.72975	-1.52353
2.72975	-1.5487
2.71975	-1.5487
2.71975	-1.5597
2.73975	-1.60408
2.7513	-1.6297
2.78375	-1.7017
2.78375	-1.7157
2.79874	-1.7157
2.80176	-1.7167
2.80569	-1.71277
2.86091	-1.71275
2.87114	-1.7138
2.88095	-1.71693
2.93663	-1.74127
2.94644	-1.7444
2.95668	-1.74545
2.98773	-1.74543
2.9288	-1.68563
2.89682	-1.68563
2.88125	-1.62655
2.88001	-1.62023
2.8796	-1.61381
2.8796	-1.60477
2.87992	-1.59909
2.88089	-1.59348
2.89937	-1.5137
2.89016	-1.5017
2.88783	-1.49362
2.88638	-1.48678
2.88589	-1.4798
2.88589	-1.43815
2.88709	-1.42726
2.89064	-1.41688
2.90084	-1.39518
2.90658	-1.38581
2.91423	-1.37791
2.96398	-1.3368
3.01294	-1.33678
3.01547	-1.34003
3.3294	-1.067
3.4907	-0.8592
3.5972	-0.722
3.6605	-0.6267
3.7113	-0.5254
3.7665	-0.3947
3.8039	-0.2876
3.8352	-0.1787
3.8602	-0.0681
3.8789	0.0437
3.8913	0.1563
3.8972	0.2695
3.8967	0.3829
3.8897	0.496
3.8764	0.6086
3.8622	0.6922
3.8307	0.8306
3.7984	0.9392
3.7601	1.0459
3.7157	1.1502
3.6787	1.2265
3.5881	1.4801
3.4635	1.5923
3.3038	1.716
3.1528	1.8211
2.9806	1.9449
2.8887	1.98
2.7897	2.0083
2.6826	2.022
2.5797	2.0193
2.4832	2.0027
2.3854	1.9708
2.2842	1.9192
2.2474	1.8972
2.1316	1.6866
2.0481	1.485
1.9399	1.1653
1.9122	1.0691
1.8876	0.972
1.8663	0.8741
1.8482	0.7756
1.8334	0.6766
1.8219	0.5771
1.8137	0.4773
1.8088	0.3773
1.8073	0.2772
1.809	0.177
1.8141	0.077
1.8225	-0.0228
1.8342	-0.1222
1.8491	-0.2213
1.8674	-0.3197
1.8889	-0.4175
1.9137	-0.5146
1.9416	-0.6107
2.0481	-0.9298]