Ronan

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Member for: 14 years, 73 days

Location: East Grinstead, United Kingdom

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These are questions asked by Ronan

Merging lists, with overriding...

Asked: Ronan 1411 Product: Maple 2026

May 18 2026

1 1

I am trying to select from a default list and a modified list to get a third combined list of the unmodified default elements and the mdfified elements plus extra elements. This is for plot data. I have managed to extract the colour data using something I did a couple of years ago. Though at this stage I don't relly know how that works either but it works.

restart

>	with(ListTools)

[BinaryPlace, BinarySearch, Categorize, Classify, Collect, Deal, DotProduct, Enumerate, FindMaximalElement, FindMinimalElement, FindRepetitions, Flatten, FlattenOnce, Group, Interleave, InversePermutation, Join, JoinSequence, LengthSplit, MakeUnique, Occurrences, Pad, PartialSums, Reverse, Rotate, Search, SearchAll, SelectFirst, SelectLast, Slice, Sorted, Split, Transpose, Unpermute]

(1)

>	PlotDefaults:=['colour' = ':-blue', symbol = ':-solidcircle', ':-symbolsize' = 8,thickness=2]; #for points and lines

(2)

>	Inputs:=['color'=[red, black, blue],symbol=square,':-linestyle'=dash]; #'color'=[red, black, blue],

(3)

>	if has(Inputs,{colour,color}) then Colourlist:=remove(has,remove(has,Flatten(eval([':-color',':-colour'],Inputs)),':-colour'),':-color') else Colourlist:=remove(has,remove(has,Flatten(eval([':-color',':-colour'],PlotDefaults)),':-colour'),':-color'); end if

(4)

Make this list

>	plotdata:=[symbol=square,':-linestyle'=dash,':-symbolsize' = 8,thickness=2]

(5)

>	mx:=max(nops(PlotDefaults),nops(Inputs))

(6)

>	Plotdata:=[]; for i to mx do end do

(7)

Download 2026-05-18_Q_Select_from_Two_Lists_to_get_New_List.mw

Insert Table Maple 2026...

Asked: Ronan 1411 Product: Maple 2026

April 18 2026

1 4

Insetr Table seems to default too test inpul in the cells. I am inserting it from this icon

I can't figure out how to change the whole table to 1d or 2d math input without individually changing each cell..

What am I misssing here?

Conflict of overloaded procedure paramet...

Asked: Ronan 1411 Product: Maple

March 28 2026

1 2

I have a example overloaded procdeure below. Due to '=' the optional input in the 2nd proc gets trapped in the 1st proc. I have tried various ways to get around this. Obviously I could make the optional input in the 2nd proc non-optional if all else fails. Is there a way around this?

restart

Test:=overload([
proc(l1::{`+`,`*`,`=`, `symbol`,procedure,not(list)},
l2::{`+`,`*`,`=`, `symbol`,procedure,not(list)} ) #need to detect if 'point' is present

option overload;
if not(has([_params[2]],point)) then #if true need to go the next proc

print("1st proc ",l1," ",l2);
return
end if;
end proc,

proc(l1::{`+`,`*`,`=`, `symbol`,procedure,not(list)},
{point::list:=NULL}) #oprional input

print("2nd proc",l1,"point",point);

end proc
]):