A chebfun3 function failed to pass the vectorCheck() of chebfun2

[George-Gate]

The following code will generate a warning saying that

Function did not correctly evaluate on an array.
Turning on the 'vectorize' flag. Did you intend this?
Use the 'vectorize' flag in the CHEBFUN2 constructor
call to avoid this warning message.

B_A_chebfun3 = chebfun3(@(x,y,z)exp(-(x+y.*y+1.5*(z+1))), [-0.4, 0.4,  -0.3,0.3,  -0.35,0.35]);
B_A_chebfun2 = chebfun2(@(x,z)B_A_chebfun3(x,0*x,z), [-0.4, 0.4,  -0.35,0.35]);

The problem is that the result of B_A_chebfun3(x,0*x,y) is transposed as shown in the following code

xx2 = [-0.4,0.4;-0.4,0.4]
yy2 = [-0.35,-0.35;0.35,0.35]
B_A_chebfun3(xx2,0*xx2,yy2)
arrayfun(@(xx,yy)B_A_chebfun3(xx,0*xx,yy), xx2, yy2)

I think this is a bug.

[trefethen]

Interesting! Here's a simpler version of the same problem:

f = chebfun3(@(x,y,z) x);
g = chebfun2(@(x,y) f(x,0*x,y));

If 0 is changed to 1, it works fine. @bhashemi, would you be able to sort this out?

[bhashemi]

I intended to create a pull request to resolve this issue, but I pushed my changes, by mistake, directly to the master branch! This is embarrassing. Can someone please check that I've not caused a serious problem here? Thanks in advance.

[bhashemi]

This issue is fixed in the latest changes to the master branch.