How to define the 3D output file name and its characteristics in MATLAB

Hello,

The following code is used to save the output 3D model into a particular .inp file for ABAQUS use in Maple code.

setoptions3d(title=`Woven Unit Cell`,style=PATCH, axes=BOXED);

This code is showing errors on MATLAB. It says assigning value needs '==" operator and is not allowing style and axes for the operation to complete. How to convert this for use in MATLAB? Is it possible to specify the same as in the Maple or needs changes?

Answer 1

[Walter Roberson]

title('Woven Unit Cell') ;
box on

Except the command is setting options for surf() and plot3() and scatter3() and patch(), but not for any 2d plot.

MATLAB permits you to set default titles and default box settings, but not to for 2d vs 3d.

[Vidya Sagar Reddy Kurre]

So the code for the same should be like this?

title('Woven Unit Cell');
box on H ='0.00635' L = '0.015' W = '0.015':

Thank You!! Regards.

[Walter Roberson]

ax = gca();
hold(ax, 'on')
title(ax, 'Woven Unit Cell');
box(ax, 'on')

H = 0.00635; L = 0.015; W = 0.015;

%more code

%at the end of plotting
hold(ax, 'off')
set(ax, 'xlimmode', 'auto', 'ylimmode', 'auto', 'zlimode', 'auto');

hold on freezes the xlim, ylim, zlim, which you do not want, so you have to release those

But you need hold on because you are setting the attributes of the plot out of the regular order. If you do not have hold on and you set a title and then you plot, then the plot would normally reset the current axes, getting rid of the title.

It would be easier if you just moved the title() and box() call to after the plotting instead of requiring that it be set as some kind of default.

[Vidya Sagar Reddy Kurre]

Hello Walter,

The code in Maple requires it to be specified in the beginning, so that the plot is done inside the set box. I did not know that we can set it in the end on MATLAB. Thank you for the feedback.

Thank You!! Regards.

[Walter Roberson]

The code in Maple does not require that the setoptions3d be done at the beginning. The code is setting the options for all future 3D plots in Maple (until the workspace is reset). Code that would be equivalent but only for one plot would be to take the plots:-display() call on the maple side and add to it the options title=`Woven Unit Cell`,style=PATCH, axes=BOXED -- so that they would apply to the one call instead of to all future calls.

Requiring that the MATLAB code produce the "exact" behavior of the Maple code is a nuisance, requiring that at the MATLAB level, several Default*CreateFcn callbacks be installed that set the desired options at the time that the 3D plots are created, but not when 2D plots are created. It is surprisingly difficult to reliably figure out whether a call to create a line() object is happening with respect to a plot3() or plot() . And the Maple code itself does not even create any 3D line plots, but in order to produce the "exact" behavior of the Maple code, I have to set up the side effects for all future plotting even though the maple code does not use them. See Bug-For-Bug Compatibility

[Vidya Sagar Reddy Kurre]

Hello Walter,

The provided code is very old. Instead of creating exact commands, How can we improve the code using the present advanced level of commands and features in MATLAB? The main aim is to create the model in MATLAB for use in ABAQUS, it is not necassary that we use the exact commands. The model dimenions and the properties as defined are need to be same.

Thank You!! Regards.