According to Maple help, the plots:-display function can be called with parameter (P).

P - a set, list or Array (one- or two-dimensional) of plot structures, or an animation structure

Both in the last section of the help function, and code in this example (https://mapleprimes.com/questions/236270-Plot-Objects-Created-Created-With-Geometry), it apparently can be called differently.

• display(A, B, view = [-3*Pi .. 3*Pi, -1 .. 1])
• display(F, draw(B))

A, B or F, draw(B) er graphics objects, but the call format is neither a set, list or Array.

Is the explanation for plots:-display incorrect, or am I missing something here?

Recently, Maple takes quite long to start here, and I wonder if there are any hints about how to speed up.

Maple itself starts quickly, but opening the start page takes quite long.

Antivirus? Other settings?

I'm struggling a bit to understand the results of the following program.

Apparently variables are not being changed after the first run. Otherwise I can't explain the results of the last line.

GeometrySegment.mw

Any idea how I catch that error?

(in geometry:-DefinedAs) wrong type of argument |C:/Users/andreas/AppData/Local/Temp/com.maplesoft/NODELibrary-0dc05fe4-0ffc9cfc/lib/NODEFunctions-13751:1976|

Here's the code:

    try
        a := map(coordinates, DefinedAs(segm))[1];
        b := map(coordinates, DefinedAs(segm))[2];
    catch "wrong type of arguments":
        Alert(cat("Error, (in geometry:-DefinedAs) wrong type of arguments, variable segm: ", whattype(segm), segm), table(), 5)
    end try;

I am trying to put an annotation  (dimension of a distance) into a plot.

Any hints about what would the best way to do that?