Re: Update the value of specific column using the values of other columns on-the-fly.

[Hongyi Zhao]

On Sat, Dec 26, 2020 at 8:52 PM Emanuel Berg via Users list for the
GNU Emacs text editor <help-gnu-emacs@gnu.org> wrote:
>
> Hongyi Zhao wrote:
>
> > I want to edit a table with 5 columns, where the first
> > column is calculated from the other columns as below:
> >
> > val_col1 = 20% * val_col2 + 30% * val_col3 + 40% * val_col4 + 10% * val_col5
> >
> > I want to let emacs update the column 1, i.e., the weighted
> > mean result of other columns automatically and on the fly
> > when I input the values for other columns.
> >
> > Is this possible with emacs? Any hints will be
> > highly appreciated.
>
> There is the Emacs spreadsheet, of course.
>
> Or do it in Lisp.
>
> But then in Lispp (Lisp and only Lisp), i.e., 100% code,

What do you mean by saying *Lispp*?

> because reading column values back and forth in a buffer -
> that is soo fragile... use the spreadsheet for that, that's
> why it's there!
>
> --
> underground experts united
> http://user.it.uu.se/~embe8573
> https://dataswamp.org/~incal
>
>


-- 
Assoc. Prof. Hongyi Zhao <hongyi.zhao@gmail.com>
Theory and Simulation of Materials
Hebei Polytechnic University of Science and Technology engineering
NO. 552 North Gangtie Road, Xingtai, China