Changing marker symbol on scatter plots not supported

[xarico10]

Specifying a marker type using mkr input argument on scatter plots doesn't work:

For example:

rng(1)
theta = linspace(0,2*pi,20);
x = sin(theta) + 0.75*rand(1,20);
y = cos(theta) + 0.75*rand(1,20);  
sz = 140;
scatter(x,y,sz,'d')

fig2plotly();

Previous code only places one specified marker symbol (diamond) at coordinates (0.3, 1.6).

Expected and generated (https://chart-studio.plotly.com/~xarico10/303/#/) plots:

Examples on using input argument mkr can be found on:
https://www.mathworks.com/help/matlab/ref/scatter.html#btrli6p-1_1