Re: Re: Compatibility woes
- To: mathgroup at smc.vnet.net
- Subject: [mg76242] Re: [mg76099] Re: Compatibility woes
- From: DrMajorBob <drmajorbob at bigfoot.com>
- Date: Fri, 18 May 2007 06:16:33 -0400 (EDT)
- References: <f295kp$n4k$1@smc.vnet.net> <30568553.1179316638063.JavaMail.root@m35> <op.tsfni5p3qu6oor@monster.ma.dl.cox.net> <13780686.1179343455242.JavaMail.root@m35> <op.tsggv2l4qu6oor@monster.ma.dl.cox.net> <17717411.1179414449369.JavaMail.root@m35>
- Reply-to: drmajorbob at bigfoot.com
> Even worse, if the entry is not discrete, but continuous, > there is no guarantee that you will get a wanted value. This is backwards; there's no way to get all real values in an interval = = ANYWAY. Sliders are appropriate for setting real-valued quantities, not discrete= = ones like the index into a list. Bobby On Thu, 17 May 2007 10:05:40 -0500, Yu-Sung Chang <yusung at wolfram.com> = wrote: > Of course, the slider is susceptible to the length of the entry it is = = > representing. Even worse, if the entry is not discrete, but continuous= , = > there is no guarantee that you will get a wanted value. > Scrollbar is obviously better option for this particular case (palette= ), = > but unfortunately, we don't have scrollbar (yet) due to few reasons. B= ut = > it will be revised in the future. > > Yu-Sung Chang > Kernel Technology > Wolfram Research, Inc. > > DrMajorBob wrote: >>> slider moves directly to the mouse position. Concerning the slider = >>> speed, we found that it is reasonably responsive (not too fast or no= t = >>> too slow) for many. Actually, it is up to the system mouse sensitivi= ty = >>> setting, not Mathematica. >> >> I belatedly realize that can't be true. >> >> No matter how sensitive (or not) the mouse may be, the maximum mouse = = >> movement (equal to the visible height of the control) must equate to = = >> moving through ALL members in the list. So the speed at which the lis= t = >> flies by, for ANY given mouse movement, is (and has to be, for a = >> slider) proportional to the number of entries in the list. >> >> Hence sliders are tolerable for small lists, intolerable for very lon= g = >> lists. For a list with millions of entries, one pixel of mouse moveme= nt = >> on the screen could equate to thousands of entries, but maybe we're = >> only seeing five or ten. >> >> Screen resolution has an effect; high resolution => short visible = >> control => faster movement through the list. I run my screen at = >> 1280x1024, so the "speed" I'm looking at is 25% greater than what you= 'd = >> see at 1024x768. >> >> No? >> > > -- = DrMajorBob at bigfoot.com