logspace(1,pi),公比是多少?为什么小于1?不是应该从10^1到10^pi 50个数的等比数列?

logspace(1,pi),公比是多少?为什么小于1?不是应该从10^1到10^pi 50个数的等比数列?
Columns 1 through 15
10.0000 9.7665 9.5384 9.3157 9.0981 8.8856 8.6781 8.4755 8.2776 8.0843 7.8955 7.7111 7.5310 7.3551 7.1834
Columns 16 through 30
7.0156 6.8518 6.6918 6.5355 6.3829 6.2338 6.0883 5.9461 5.8072 5.6716 5.5392 5.4098 5.2835 5.1601 5.0396
Columns 31 through 45
4.9219 4.8070 4.6947 4.5851 4.4780 4.3734 4.2713 4.1715 4.0741 3.9790 3.8861 3.7953 3.7067 3.6201 3.5356
Columns 46 through 50
3.4530 3.3724 3.2936 3.2167 3.1416
MATLAB 求解释！
而logspace(1,3.1416)的公比却大于1？
1.0e+003 *
Columns 1 through 15
0.0100 0.0111 0.0122 0.0135 0.0150 0.0165 0.0183 0.0202 0.0224 0.0247 0.0273 0.0302 0.0334 0.0370 0.0409
Columns 16 through 30
0.0452 0.0500 0.0553 0.0611 0.0676 0.0747 0.0826 0.0914 0.1010 0.1117 0.1235 0.1366 0.1511 0.1671 0.1847
Columns 31 through 45
0.2043 0.2259 0.2498 0.2762 0.3054 0.3377 0.3735 0.4130 0.4567 0.5050 0.5584 0.6175 0.6828 0.7550 0.8349
Columns 46 through 50
0.9232 1.0209 1.1289 1.2483 1.3804