Dear experts,

Sorry if this question is stupid, but I am new to SMATH.

In order to plot some simple vector diagrams (using the SMATH built in diagram) I did the following.
I want to plot the vector from a given start point with given length and angle.

So for the arrow I created a polygon, rotaded and moved it. This works quite well. I als can put the formulars into the plotting input area.



But it would be nicer to define a function e.g. Arrow(start_x; start_y; length; angle).
Is this possible? What would be the syntax?

Is there maybe a smarter way of doing this?

Thanks in advance!
Ralf

arrow1.sm (11,18 KiB) scaricato 1201 volta(e).

Hello Ralf,

welcome in the community

Simply put a function name on the LHS (left hand side) of the assignment operator


arrow1 (r1).sm (12,64 KiB) scaricato 1196 volta(e).

Once you have done it if you want to rename a variable inside the function you can do it at once using the F8 key when the text cursor is inside the variable you want to rename.

Wrote

I want to plot the vector from a given start point with given length and angle.

Gorgeous application of the 2D rotation matrix.
Few more in there.

Jean

Circle_rkfixed Arrow.sm (27,63 KiB) scaricato 1226 volta(e).