Index: prview/test/cyl_100_40.txt
===================================================================
--- prview/test/cyl_100_40.txt	(revision f3d51f6ec6277f40c94acc80d658917deab47a7a)
+++ prview/test/cyl_100_40.txt	(revision f3d51f6ec6277f40c94acc80d658917deab47a7a)
@@ -0,0 +1,100 @@
+<X>   <Y>
+0.001  452.143
+0.00507143  446.095
+0.00914286  432.224
+0.0132143  411.202
+0.0172857  384.031
+0.0213571  351.963
+0.0254286  316.42
+0.0295  278.89
+0.0335714  240.837
+0.0376429  203.607
+0.0417143  168.361
+0.0457857  136.02
+0.0498571  107.237
+0.0539286  82.3885
+0.058  61.5945
+0.0620714  44.7465
+0.0661429  31.5554
+0.0702143  21.6032
+0.0742857  14.3957
+0.0783571  9.41251
+0.0824286  6.14889
+0.0865  4.14745
+0.0905714  3.01887
+0.0946429  2.45169
+0.0987143  2.21262
+0.102786  2.13964
+0.106857  2.1302
+0.110929  2.1272
+0.115  2.10489
+0.119071  2.05646
+0.123143  1.98425
+0.127214  1.89312
+0.131286  1.78677
+0.135357  1.66662
+0.139429  1.53231
+0.1435  1.38309
+0.147571  1.2194
+0.151643  1.04405
+0.155714  0.862598
+0.159786  0.683069
+0.163857  0.514917
+0.167929  0.367635
+0.172  0.249275
+0.176071  0.165183
+0.180143  0.117185
+0.184214  0.103352
+0.188286  0.118336
+0.192357  0.1542
+0.196429  0.201565
+0.2005  0.25088
+0.204571  0.293609
+0.208643  0.323173
+0.212714  0.335541
+0.216786  0.329424
+0.220857  0.306091
+0.224929  0.268886
+0.229  0.222542
+0.233071  0.17241
+0.237143  0.123716
+0.241214  0.0809428
+0.245286  0.0473771
+0.249357  0.0248774
+0.253429  0.0138391
+0.2575  0.0133404
+0.261571  0.0214213
+0.265643  0.0354445
+0.269714  0.0524831
+0.273786  0.0696886
+0.277857  0.0845999
+0.281929  0.0953679
+0.286  0.100882
+0.290071  0.100799
+0.294143  0.0954808
+0.298214  0.0858635
+0.302286  0.073276
+0.306357  0.0592375
+0.310429  0.0452569
+0.3145  0.0326587
+0.318571  0.0224504
+0.322643  0.0152444
+0.326714  0.0112369
+0.330786  0.0102389
+0.334857  0.0117515
+0.338929  0.0150685
+0.343  0.0193915
+0.347071  0.0239399
+0.351143  0.028042
+0.355214  0.0311985
+0.359286  0.0331122
+0.363357  0.0336872
+0.367429  0.033001
+0.3715  0.0312586
+0.375571  0.0287396
+0.379643  0.0257467
+0.383714  0.0225636
+0.387786  0.0194266
+0.391857  0.016512
+0.395929  0.0139361
+0.4  0.0117657
Index: prview/test/cyl_100_50.txt
===================================================================
--- prview/test/cyl_100_50.txt	(revision f3d51f6ec6277f40c94acc80d658917deab47a7a)
+++ prview/test/cyl_100_50.txt	(revision f3d51f6ec6277f40c94acc80d658917deab47a7a)
@@ -0,0 +1,100 @@
+<X>   <Y>
+0.001  706.368
+0.00303061  702.362
+0.00506122  694.382
+0.00709184  682.546
+0.00912245  667.03
+0.0111531  648.064
+0.0131837  625.924
+0.0152143  600.93
+0.0172449  573.435
+0.0192755  543.82
+0.0213061  512.487
+0.0233367  479.847
+0.0253673  446.316
+0.027398  412.306
+0.0294286  378.213
+0.0314592  344.419
+0.0334898  311.277
+0.0355204  279.109
+0.037551  248.202
+0.0395816  218.804
+0.0416122  191.123
+0.0436429  165.32
+0.0456735  141.518
+0.0477041  119.793
+0.0497347  100.184
+0.0517653  82.6896
+0.0537959  67.2739
+0.0558265  53.8698
+0.0578571  42.3828
+0.0598878  32.6962
+0.0619184  24.6751
+0.063949  18.1715
+0.0659796  13.0286
+0.0680102  9.08542
+0.0700408  6.18056
+0.0720714  4.15606
+0.074102  2.86044
+0.0761327  2.15137
+0.0781633  1.8978
+0.0801939  1.98156
+0.0822245  2.29839
+0.0842551  2.7585
+0.0862857  3.2867
+0.0883163  3.82202
+0.0903469  4.31709
+0.0923776  4.73715
+0.0944082  5.05888
+0.0964388  5.269
+0.0984694  5.36289
+0.1005  5.34304
+0.102531  5.21756
+0.104561  4.99883
+0.106592  4.70206
+0.108622  4.3442
+0.110653  3.94279
+0.112684  3.5151
+0.114714  3.07742
+0.116745  2.64447
+0.118776  2.22898
+0.120806  1.84147
+0.122837  1.49012
+0.124867  1.18072
+0.126898  0.916844
+0.128929  0.699943
+0.130959  0.529615
+0.13299  0.40386
+0.13502  0.319374
+0.137051  0.271844
+0.139082  0.256249
+0.141112  0.26713
+0.143143  0.298852
+0.145173  0.345824
+0.147204  0.402696
+0.149235  0.464512
+0.151265  0.526833
+0.153296  0.585826
+0.155327  0.638318
+0.157357  0.68182
+0.159388  0.71453
+0.161418  0.735308
+0.163449  0.743638
+0.16548  0.73957
+0.16751  0.723652
+0.169541  0.696858
+0.171571  0.660505
+0.173602  0.616175
+0.175633  0.565627
+0.177663  0.510724
+0.179694  0.453354
+0.181724  0.395365
+0.183755  0.338497
+0.185786  0.284336
+0.187816  0.234265
+0.189847  0.189431
+0.191878  0.150723
+0.193908  0.118753
+0.195939  0.0938608
+0.197969  0.0761108
+0.2  0.0653128
Index: prview/test/sphere_60_q0_2.txt
===================================================================
--- prview/test/sphere_60_q0_2.txt	(revision f3d51f6ec6277f40c94acc80d658917deab47a7a)
+++ prview/test/sphere_60_q0_2.txt	(revision f3d51f6ec6277f40c94acc80d658917deab47a7a)
@@ -0,0 +1,100 @@
+<X>   <Y>
+0.0030303  8.98814e+007
+0.00606061  8.8112e+007
+0.00909091  8.52294e+007
+0.0121212  8.13294e+007
+0.0151515  7.65401e+007
+0.0181818  7.10151e+007
+0.0212121  6.49267e+007
+0.0242424  5.84579e+007
+0.0272727  5.17944e+007
+0.030303  4.51165e+007
+0.0333333  3.8592e+007
+0.0363636  3.237e+007
+0.0393939  2.65755e+007
+0.0424242  2.13065e+007
+0.0454545  1.66317e+007
+0.0484848  1.25902e+007
+0.0515152  9.19312e+006
+0.0545455  6.42579e+006
+0.0575758  4.25154e+006
+0.0606061  2.61612e+006
+0.0636364  1.45255e+006
+0.0666667  686135
+0.069697  239279
+0.0727273  35857.1
+0.0757576  4919.12
+0.0787879  83577.3
+0.0818182  218998
+0.0848485  369480
+0.0878788  504676
+0.0909091  605048
+0.0939394  660716
+0.0969697  669852
+0.1  636816
+0.10303  570197
+0.106061  480922
+0.109091  380565
+0.112121  279960
+0.115152  188168
+0.118182  111825
+0.121212  54863.4
+0.124242  18561.6
+0.127273  1856.11
+0.130303  1846.07
+0.133333  14403.8
+0.136364  34814.1
+0.139394  58372.5
+0.142424  80888.4
+0.145455  99054.8
+0.148485  110668
+0.151515  114694
+0.154545  111202
+0.157576  101181
+0.160606  86290.3
+0.163636  68568
+0.166667  50137
+0.169697  32946.5
+0.172727  18566.1
+0.175758  8051.8
+0.178788  1887.73
+0.181818  1.4079
+0.184848  1840.78
+0.187879  6497.1
+0.190909  12853.9
+0.193939  19742.4
+0.19697  26083.9
+0.2  31005.7
+0.20303  33919.7
+0.206061  34558
+0.209091  32968.3
+0.212121  29471.6
+0.215152  24593.2
+0.218182  18977.1
+0.221212  13295.2
+0.224242  8163.18
+0.227273  4071.6
+0.230303  1339.39
+0.233333  92.2766
+0.236364  266.593
+0.239394  1635.41
+0.242424  3851.68
+0.245455  6501.71
+0.248485  9161.49
+0.251515  11449
+0.254545  13066.6
+0.257576  13829.3
+0.260606  13676.9
+0.263636  12669.9
+0.266667  10971.1
+0.269697  8816.65
+0.272727  6480.3
+0.275758  4236.72
+0.278788  2327.4
+0.281818  933.697
+0.284848  159.476
+0.287879  24.6054
+0.290909  469.318
+0.293939  1367.95
+0.29697  2549.68
+0.3  3823.11
Index: prview/test/sphere_80.txt
===================================================================
--- prview/test/sphere_80.txt	(revision f3d51f6ec6277f40c94acc80d658917deab47a7a)
+++ prview/test/sphere_80.txt	(revision f3d51f6ec6277f40c94acc80d658917deab47a7a)
@@ -0,0 +1,100 @@
+<X>   <Y>
+0.0010101  2.14186e+008
+0.0020202  2.13348e+008
+0.0030303  2.11958e+008
+0.0040404  2.10025e+008
+0.00505051  2.07561e+008
+0.00606061  2.04584e+008
+0.00707071  2.01112e+008
+0.00808081  1.97169e+008
+0.00909091  1.92781e+008
+0.010101  1.87975e+008
+0.0111111  1.82783e+008
+0.0121212  1.77237e+008
+0.0131313  1.71373e+008
+0.0141414  1.65226e+008
+0.0151515  1.58833e+008
+0.0161616  1.52233e+008
+0.0171717  1.45465e+008
+0.0181818  1.38567e+008
+0.0191919  1.31578e+008
+0.020202  1.24536e+008
+0.0212121  1.17479e+008
+0.0222222  1.10442e+008
+0.0232323  1.03461e+008
+0.0242424  9.65692e+007
+0.0252525  8.97973e+007
+0.0262626  8.31748e+007
+0.0272727  7.67288e+007
+0.0282828  7.04839e+007
+0.0292929  6.4462e+007
+0.030303  5.86828e+007
+0.0313131  5.31627e+007
+0.0323232  4.79158e+007
+0.0333333  4.29533e+007
+0.0343434  3.82836e+007
+0.0353535  3.39126e+007
+0.0363636  2.98434e+007
+0.0373737  2.60768e+007
+0.0383838  2.2611e+007
+0.0393939  1.9442e+007
+0.040404  1.65639e+007
+0.0414141  1.39687e+007
+0.0424242  1.16467e+007
+0.0434343  9.58662e+006
+0.0444444  7.77602e+006
+0.0454545  6.20118e+006
+0.0464646  4.84751e+006
+0.0474747  3.69971e+006
+0.0484848  2.74197e+006
+0.0494949  1.95815e+006
+0.0505051  1.33203e+006
+0.0515152  847402
+0.0525253  488319
+0.0535354  239201
+0.0545455  84994.7
+0.0555556  11292.7
+0.0565657  4445.63
+0.0575758  51653.5
+0.0585859  141041
+0.059596  261717
+0.0606061  403816
+0.0616162  558522
+0.0626263  718084
+0.0636364  875805
+0.0646465  1.02603e+006
+0.0656566  1.1641e+006
+0.0666667  1.28634e+006
+0.0676768  1.38998e+006
+0.0686869  1.47309e+006
+0.069697  1.53454e+006
+0.0707071  1.57391e+006
+0.0717172  1.59141e+006
+0.0727273  1.5878e+006
+0.0737374  1.5643e+006
+0.0747475  1.52256e+006
+0.0757576  1.46449e+006
+0.0767677  1.39227e+006
+0.0777778  1.30823e+006
+0.0787879  1.21477e+006
+0.079798  1.11433e+006
+0.0808081  1.00933e+006
+0.0818182  902079
+0.0828283  794770
+0.0838384  689421
+0.0848485  587856
+0.0858586  491670
+0.0868687  402219
+0.0878788  320609
+0.0888889  247687
+0.089899  184050
+0.0909091  130047
+0.0919192  85790.3
+0.0929293  51176.4
+0.0939394  25900.5
+0.0949495  9481.12
+0.0959596  1283.93
+0.0969697  547.497
+0.0979798  6409.98
+0.0989899  17935.9
+0.1  34142.4
Index: prview/test/sphere_test_data.txt
===================================================================
--- prview/test/sphere_test_data.txt	(revision f3d51f6ec6277f40c94acc80d658917deab47a7a)
+++ prview/test/sphere_test_data.txt	(revision f3d51f6ec6277f40c94acc80d658917deab47a7a)
@@ -0,0 +1,51 @@
+<q>   <I_1D>
+0.01  1.30173e+008
+0.02  9.59565e+007
+0.03  5.57754e+007
+0.04  2.37208e+007
+0.05  6.0257e+006
+0.06  332209
+0.07  335963
+0.08  1.03749e+006
+0.09  816241
+0.1  234630
+0.11  230.644
+0.12  100168
+0.13  182129
+0.14  111803
+0.15  16326.8
+0.16  6931.71
+0.17  45283.6
+0.18  50971.8
+0.19  19812.5
+0.2  146.532
+0.21  9676.19
+0.22  21749.2
+0.23  15602.5
+0.24  2700.12
+0.25  1044.09
+0.26  8110.76
+0.27  10054.2
+0.28  4251.65
+0.29  38.5548
+0.3  2295.45
+0.31  5499.87
+0.32  4158.67
+0.33  752.025
+0.34  308.434
+0.35  2475.65
+0.36  3174.91
+0.37  1380.1
+0.38  11.2373
+0.39  815.932
+0.4  1988.73
+0.41  1531.36
+0.42  276.75
+0.43  127.297
+0.44  1001.82
+0.45  1297.13
+0.46  566.229
+0.47  3.50245
+0.48  365.098
+0.49  887.09
+0.5  684.787
