What is wrong with 2Pi?

*To*: mathgroup at smc.vnet.net*Subject*: [mg131139] What is wrong with 2Pi?*From*: Alexei Boulbitch <Alexei.Boulbitch at iee.lu>*Date*: Fri, 14 Jun 2013 04:58:55 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-outx@smc.vnet.net*Delivered-to*: mathgroup-newsendx@smc.vnet.net

Dear community, This works: Manipulate[ Plot[Sin[a x], {x, 0, 4 Pi}], {{a, 1}, 0, 6.28, VerticalGauge[##, ImageSize -> 50] &}, ControlPlacement -> Left] This Manipulate[ Plot[Sin[a x], {x, 0, 4 Pi}], {{a, 1}, 0, 2 \[Pi], VerticalGauge[##, ImageSize -> 50] &}, ControlPlacement -> Left] however, does not work. I cannot move the gauge in this latter case, while it is easy to move it in the former one. So, if I am right, is it Pi placed instead of 6.28 that disturbs the functioning? Please check it. Looks like a bug. Alexei Alexei BOULBITCH, Dr., habil. IEE S.A. ZAE Weiergewan, 11, rue Edmond Reuter, L-5326 Contern, LUXEMBOURG Office phone : +352-2454-2566 Office fax: +352-2454-3566 mobile phone: +49 151 52 40 66 44 e-mail: alexei.boulbitch at iee.lu

**Follow-Ups**:**Re: What is wrong with 2Pi?***From:*Bob Hanlon <hanlonr357@gmail.com>