Re: Re: How do I pick out the expression under a radical?

*To*: mathgroup at smc.vnet.net*Subject*: [mg36800] Re: [mg36788] Re: How do I pick out the expression under a radical?*From*: Murray Eisenberg <murraye at attbi.com>*Date*: Thu, 26 Sep 2002 04:56:56 -0400 (EDT)*Organization*: Mathematics & Statistics, Univ. of Mass./Amherst*References*: <akf64b$bgc$1@smc.vnet.net> <200209250551.BAA05394@smc.vnet.net>*Reply-to*: murray at math.umass.edu*Sender*: owner-wri-mathgroup at wolfram.com

I don't understand the problem. Say I enter the 2D form for the reciprocal of the square root of a^2 + b^2, but I enter it in Standard Form (i.e., using the Control key with / to form the fraction, and the Control key with 2 to get the square root symbol). If then I click anywhere within the subexpression inside the square root, then with 2 to three clicks the entire expression under the square root will be highlighted. I can then do a copy-and-paste to put that into any cell, in the usual way -- with keyboard key combinations, right-click context menu, or Mathematica Edit menu. Isn't that "GUI" enough? Would you REALLY want to be able to DRAG the highlighted expression to a new place? Think of how much of a mess this could cause through inadvertent movement of the mouse after highlighting some subexpression. In fact, I hate Microsoft Word's doing just that! Steve Gray wrote: > "Steve Beach" <asb4 at psu.edu> wrote in message > news:akf64b$bgc$1 at smc.vnet.net... > >>I'm a poor physicist trying to figure out how to sort out the >>"physical" from the "non-physical" solutions to a problem. To do >>that, I need to be able to look at an expression and pick out a >>subexpression, the part under the radical. > > > GRAY: > This points up the need, which I've been aware of for years, to be > able to select any part of an expression and drag it to a new line for > further processing. Mathematica and the other CAS I'm familiar with are still > pretty much stuck with a command line interface. They need a true > GUI with extensive interaction. > When I can see on the screen exactly what I want to do, why > should I have to type a bunch of stuff in to access what I want? > Maybe we'll see this in version 5? 6? Never? > > > > > -- Murray Eisenberg murray at math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2859 (W) 710 North Pleasant Street Amherst, MA 01375

**References**:**Re: How do I pick out the expression under a radical?***From:*"Steve Gray" <stevebg@adelphia.net>