Index: sansview/test/circular_test.txt
===================================================================
--- sansview/test/circular_test.txt	(revision 0027ec04819b7fa9d554c05df8535bb4fad895dd)
+++ sansview/test/circular_test.txt	(revision 0027ec04819b7fa9d554c05df8535bb4fad895dd)
@@ -0,0 +1,197 @@
+0.000899228	2.10714	0.787719
+0.00269768	2.23529	0.390215
+0.00449611	2.04317	0.329316
+0.00629451	2.34872	0.273879
+0.00809288	2.45136	0.275535
+0.00989118	2.07619	0.231137
+0.0116894	2.51382	0.255162
+0.0134876	2.78589	0.235719
+0.0152857	2.82256	0.288631
+0.0170836	37.5627	9.70175
+0.0188815	283.848	30.0038
+0.0206792	574.71	16.5951
+0.0224768	562.734	6.29923
+0.0242743	458.299	4.91089
+0.0260716	386.739	3.39732
+0.0278687	339.613	2.70466
+0.0296656	301.263	2.21533
+0.0314623	272.267	2.16338
+0.0332589	244.909	1.69934
+0.0350552	226.203	1.58428
+0.0368512	206.863	1.59762
+0.0386471	185.85	1.46253
+0.0404426	169.891	1.44168
+0.042238	156.54	1.3958
+0.044033	141.837	1.23357
+0.0458277	131.137	1.07789
+0.0476221	119.515	1.01722
+0.0494163	110.662	0.958344
+0.0512101	103.007	0.937419
+0.0530035	95.4779	0.862871
+0.0547966	91.8058	0.741748
+0.0565893	86.6594	0.781169
+0.0583817	82.4079	0.751223
+0.0601737	80.1931	0.741448
+0.0619653	76.6078	0.794841
+0.0637565	72.0323	0.728062
+0.0655472	70.5796	0.659055
+0.0673375	68.3455	0.689896
+0.0691274	67.962	0.733817
+0.0709168	64.6824	0.67
+0.0727058	60.6391	0.621563
+0.0744943	58.8391	0.610885
+0.0762822	57.2486	0.566588
+0.0780697	55.0056	0.602304
+0.0798567	53.0108	0.535894
+0.0816432	51.9189	0.532653
+0.0834291	48.6791	0.476723
+0.0852144	46.8063	0.483678
+0.0869993	47.2474	0.462199
+0.0887835	43.5911	0.44721
+0.0905671	42.7296	0.442351
+0.0923502	41.5577	0.483596
+0.0941327	41.1311	0.45476
+0.0959145	40.7286	0.449842
+0.0976957	40.3113	0.465223
+0.0994763	37.8531	0.413888
+0.101256	37.8924	0.427119
+0.103035	36.9144	0.404143
+0.104814	35.7632	0.39773
+0.106592	35.1504	0.384581
+0.108369	34.1974	0.386117
+0.110146	34.0667	0.398764
+0.111922	33.6923	0.366709
+0.113697	33.6543	0.381906
+0.115471	32.8926	0.403917
+0.117244	32.037	0.350557
+0.119017	31.5	0.363937
+0.120789	30.8629	0.360647
+0.122561	30.3788	0.329016
+0.124331	30.2335	0.366182
+0.126101	29.5075	0.322168
+0.12787	29.6513	0.329672
+0.129638	28.7308	0.350169
+0.131405	28.0576	0.304267
+0.133171	28.1159	0.330375
+0.134937	27.3979	0.331533
+0.136701	27.3827	0.328964
+0.138465	26.7234	0.336081
+0.140228	27.069	0.295062
+0.14199	26.6491	0.309653
+0.143751	26.0872	0.291949
+0.145511	25.8644	0.29219
+0.14727	26.0033	0.307942
+0.149028	25.6361	0.283737
+0.150786	25.8956	0.305703
+0.152542	25.8057	0.270985
+0.154297	25.2194	0.282545
+0.156052	24.892	0.258281
+0.157805	25.4763	0.268378
+0.159557	25.0794	0.272766
+0.161309	24.7825	0.261727
+0.163059	24.9224	0.260888
+0.164808	25.1834	0.301883
+0.166556	25.3645	0.262199
+0.168304	25.2101	0.287973
+0.17005	28.9448	0.665465
+0.171795	27.913	0.65723
+0.173539	26.5775	0.540009
+0.175281	25.8168	0.512133
+0.177023	25.3282	0.437116
+0.178764	25.4885	0.468379
+0.180503	25.0661	0.46611
+0.182242	24.9921	0.453358
+0.183979	24.6987	0.44243
+0.185715	24.917	0.451056
+0.18745	24.2343	0.448165
+0.189183	24.6767	0.457696
+0.190916	24.1583	0.453254
+0.192647	23.384	0.445966
+0.194377	24.1423	0.405457
+0.196106	24.0991	0.421133
+0.197834	24.0996	0.392061
+0.199561	23.4957	0.434586
+0.201286	24.2377	0.476795
+0.20301	23.7974	0.406358
+0.204733	23.9367	0.412553
+0.206454	23.8472	0.397881
+0.208174	23.5771	0.44645
+0.209893	23.9955	0.429843
+0.211611	23.3289	0.38234
+0.213327	23.6226	0.41289
+0.215042	23.306	0.414176
+0.216756	23.4419	0.403555
+0.218468	23.567	0.441006
+0.220179	22.7189	0.382951
+0.221888	22.9209	0.417391
+0.223597	22.9381	0.365125
+0.225304	22.9426	0.478401
+0.227009	22.574	0.391155
+0.228713	23.0235	0.425952
+0.230416	22.293	0.362276
+0.232117	22.5297	0.406231
+0.233817	22.4686	0.413004
+0.235516	22.7455	0.453796
+0.237213	22.0566	0.339483
+0.238909	22.2778	0.382918
+0.240603	21.934	0.427919
+0.242296	21.7512	0.390441
+0.243987	21.6789	0.470216
+0.245677	21.4638	0.367577
+0.247365	21.2249	0.412706
+0.249052	21.7251	0.447921
+0.250737	21.871	0.362003
+0.252421	21.7788	0.426931
+0.254103	21.3606	0.421129
+0.255784	20.9854	0.382823
+0.257464	20.5825	0.370218
+0.259141	20.6948	0.410821
+0.260818	19.7606	0.360694
+0.262492	20.1863	0.391981
+0.264166	20.1571	0.428529
+0.265837	20.237	0.382008
+0.267507	19.9369	0.374608
+0.269176	19.3495	0.387186
+0.270842	19.5911	0.420917
+0.272508	18.7804	0.371789
+0.274171	18.6471	0.36166
+0.275833	19.5196	0.39155
+0.277494	19.4976	0.385574
+0.279153	19.0049	0.387191
+0.28081	18.3	0.366335
+0.282465	18.6146	0.380872
+0.284119	18.3054	0.408986
+0.285772	18.3285	0.354263
+0.287422	18.6585	0.384979
+0.289071	18.2129	0.376514
+0.290718	17.798	0.353587
+0.292364	17.3447	0.404817
+0.294008	17.4928	0.357035
+0.29565	17.7157	0.348982
+0.297291	17.22	0.367537
+0.298929	17.3383	0.34182
+0.300566	17.0977	0.36677
+0.302202	16.8438	0.368955
+0.303835	16.7847	0.450887
+0.305467	16.6614	0.538276
+0.307098	16.808	0.455744
+0.308726	17.4174	0.481858
+0.310353	17.0792	0.47066
+0.311978	16.3505	0.504924
+0.313601	16.5955	0.633529
+0.315222	15.8202	0.566462
+0.316842	16.2208	0.662599
+0.31846	15.1791	0.693031
+0.320076	16.5968	0.646538
+0.32169	15.127	0.593311
+0.323303	15.9815	0.878937
+0.324913	15.2444	1.00913
+0.326522	15.7949	1.09543
+0.328129	17.125	0.869119
+0.329734	15.5938	1.06716
+0.331338	16.9231	1.38111
+0.332939	15.85	1.7581
+0.334539	19.0667	2.28341
+0.336137	19.6667	2.56826
+0.337733	22.25	3.66328
+0.339327	26	1
