MaplePrimes - Newest Questions and Posts

Using a relative path when importing data?

erik10 — Sun, 12 Jul 2026 15:14:04 Z

When our students import data from an Excel file into Maple using Tools > Import Data, everything works as expected.

After doing some experiments, however, I realized that the data from the Excel file is not embedded in the Maple worksheet. That is probably a sensible design choice for large datasets. However, I also discovered that Maple stores an absolute path to the Excel file.

For example, suppose I have the files

importdata.mw
data.xlsx

in the same folder. If I copy that entire folder to another location, the copied Maple worksheet still refers to the original Excel file rather than the one located in the same folder as the worksheet. If the original folder is renamed or removed, re-executing the worksheet results in errors because Maple can no longer find the Excel file.

This makes it difficult to distribute teaching material to my students. Ideally, I would like to give them a ZIP file containing both files. After extracting the ZIP file, the worksheet should simply use the data.xlsx file located in the same folder. Instead, the students have to import the Excel file again manually, which is rather inconvenient.

My question is: Is there a way to make Maple use a relative path instead of an absolute path when importing Excel data?

I am happy to use a single line of Maple code if necessary, but I would prefer not to introduce several lines of code or programming constructs. We do not really teach Maple programming; our students mainly work with the graphical interface (tabs and ribbons).

I hope someone can help.

Erik

How to display Unit call, with coefficient 1?

C_R — Sat, 11 Jul 2026 13:32:35 Z

This is about avoiding that automatic simplifcation removes a factor of "1" before a unit.

Example output with removed factors:

Readers of technical notes not familar with Maple interprete the above missing values before units as layout errors.
Also reading it (e.g. with a screen reader) sounds strange: "m_l equals kg" or "m_1 of kg". As a work around a float one (i.e.: 1.) can be used, which in some instances does not look as nice as

To improve the above I thought of an inert "1" or an inert multiplication that could be removed by the value command in subsequent calculations (not necessarily visible in a document to the reader when the input is hidden).
I could not find a way for an inert "1". With inert multiplication using %* a grey asterix is printed

Can we make the grey multiplication symbol invisble?

Related discussion on 0 mm and 1 mm

https://www.mapleprimes.com/questions/241946-Round-With-Units#answer313597

PDF printing not working

C_R — Fri, 10 Jul 2026 15:51:55 Z

Maple 2026 print layout

PDF created with print -> Adobe pdf printer -> save to file

Is that related to the attached worksheet or my installation?
If that is not reproducible on other installations, can I someone provide a file that prints correctly to test my installation?

Anything I can do about the mixed up fonts?

pdf_print.mw

Other question: Where is the pagesetup in Maple 2026? Maple shows in the printlayout a pagebreak at about 80% of the displayed page. AI could not tell me

(edit) where the page setup is to adjust the page size.

How to force particular units?

Mac Dude — Wed, 08 Jul 2026 15:51:43 Z

I am adding 'specificheat' as a property to the Element database in Maple.

In my .mapleinit I have added the property so it is permanent

I have a Package that loads the values in from a table using

ScientificConstants:-ModifyElement(parse(elemt),specificheat=[value=data[i,4]*1000,units='J/kg/K']);

which runs in a loop for all elements I have values for. This all works.

My issue: GetUnit() returns a unit of m^2/(s^2*K). While this is not wrong, I want it to stay J/(kg*K), which is much more suitable for my work (and, besides, is the SI unit for specific heat). I can use convert to fix it on a case-by-case basis, but that is decidedly clumsy.

Is there a way to do that?

This is in Maple 2015. I have access to Maple 2023 as well, but not where I am right now. I really need this to work on all of them.

TIA,

M.D.

Matt's example of an arithmetic progression

Mister_Matthew_abc — Wed, 08 Jul 2026 06:42:49 Z

Hi Maple community, and all,
an arbitrary arithmetic progression, with starting value , s,

and increasing by "a", where "a" is the value to add, every time,
so
{Arithmetic Progression} is found by calculating
s+a*index

where index is a running index
see attached
arithmetic_progression_with_1_and_8.mw

arithmetic_progression_with_1_and_8.mw

hopefully, that is useful, as an example, of an arithmetic progression.

Regards,
Matt

PDETools:-dchange example

Rouben Rostamian — Tue, 07 Jul 2026 17:22:19 Z

In the following example, the result of PDETools:-dchange() is unexpected. This may be due to my misunderstanding of the documentation, or (hopefully not) a bug. Any comments?

restart;

>	with(PDETools):

Differential equation over :

>	de := diff(u(x),x) + x*u(x) = 0;

Transform the domain from to :

>	tr := x = 5*xi, u(x) = v(xi);

>	dchange({tr}, de, {xi, v(xi)});

That's good. Now do the same thing to a generic first order ODE:

>	DE := F(x,u(x),diff(u(x),x));

>	dchange({tr}, DE, {xi, v(xi)});

That's not good. The first argument of which was , should have changed to .

Download dchange-problem.mw