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Re: in a loop

  • To: mathgroup at smc.vnet.net
  • Subject: [mg111892] Re: in a loop
  • From: Helen Read <hpr at together.net>
  • Date: Tue, 17 Aug 2010 01:22:02 -0400 (EDT)
  • References: <i4b205$b77$1@smc.vnet.net>
  • Reply-to: HPR <read at math.uvm.edu>

On 8/16/2010 5:56 AM, Murray Eisenberg wrote:
> On 8/15/2010 7:39 AM, Helen Read wrote:
>
>> Ever since Grid and Column were introduced, I find no need for TableForm
>> anymore.
>
> Table with TableForm still seems easier when you want to add column or
> row headers. With Grid, etc., you have to explicitly adjoin rows or
> columns with the headers.

ColumnHeadings and RowHeadings have been on my wish list ever since Grid 
was introduced. I don't know why we don't have them.

Still, I like Grid so much better that I am willing to Join my own 
labels. That seems to be more effort than most of my students will go to 
(though a few of them will). So I started slapping Labeled[] around 
Grids in class (without saying anything about it), and the students 
started imitating it.

We'll be making tables of terms and partial sums of a series, say, and 
do something like this to keep track of which table is which:

terms=Table[{n,N[a[n]]},{n,1,25}];
Labeled[Grid[terms,Frame->All], "Terms"]

Some of the students are even willing to put in some manual spacing to 
label the columns.

Labeled[Grid[terms,Frame->All], "  n         a[n]"]

But yeah, ColumnHeadings and RowHeadings would be nice to have for Grid.

-- 
Helen Read
University of Vermont


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