Re: [Maxima-discuss] for loops and displaying output

[Richard F. <fa...@be...>]

A nicer idiomatic way...

R[i,j]:= subst(x,y,lein[i,j]);

for i:1 thru 4 do for j:1 thru 4 do display(R[i,j]);



On 4/29/2018 9:09 PM, Kris Katterjohn wrote:
> On Mon, Apr 30, 2018 at 12:57:13PM +0930, Joseph O'Leary wrote:
>> I am trying to wrap my head around some intro programming with Maxima. I
>> have the following loop
>>
>> for i: 1 thru 4 do
>> for j: 1 thru 4 do R[i,j]: subst(x,y,lein[i,j]),
>> R[i,j];
>>
>>
>> What i am trying to do is to substitute the variable x for u in the R[i,j]
>> and then display the R[i,j]. What is the procedure for displaying results
>> of this type does any one know?
> Your description doesn't quite match your code, but there are functions
> like "print" and "display" that can print to the screen.
>
> And from the looks of what you're trying to do, you need to group
> together the expressions in your loop body.  You can try something like
> this (note the parentheses):
>
>    for i: 1 thru 4 do
>      for j: 1 thru 4 do
>        (R[i, j]: subst (x, y, lein[i, j]),
>         display (R[i, j]));
>
> Is this the sort of thing you had in mind?
>
> (I guess lein is used in the tensor stuff, which I'm not familiar with,
> so I'm assuming that the subst above is an appropriate thing to do.)
>
> Cheers,
> Kris Katterjohn
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> _______________________________________________
> Maxima-discuss mailing list
> Max...@li...
> https://lists.sourceforge.net/lists/listinfo/maxima-discuss