Invalid subscript for type: float.z

[Valent]

Hi,
I'm here with another nooob question)

 

I am trying to assign the value of a component of a custom vector attribute to a float and it doesn't work. Could you please explain to me what I am doing wrong?

q1.hipnc

[jamesr]

The problem is that you're mixing vex variables and attributes. The following code is incorrect (not really sure why it's not erroring out...) 

@Cd={0,0,0};
vector @a1={0,0,0}; // Here is your problem 
f@b=0;

@Cd=fit01(relbbox(@P), 0.5,1);
@a1=fit01(relbbox(@P), 1,0.5);

instead of doing 

vector @a1

you want to declare the vector attribute as 

v@a1

 

Here's your file with the stuff fixed. I like to prefix the attributes with f, v, p, 4, etc all the time when I'm coding. You don't technically have to each time, and I don't think most people do, but it helps me avoid any confusion on the type especially in places where houdini is pickier about it, like in DOPs. 

I also added some spaces to make it a bit more readable . You may want to consider getting more descriptive with your attribute/variable names!

 

 

 

q1_fix.hipnc

[Valent]

Thanks for your answer, but I think it works just because you've put "unnecessary" prefix in the last wrangle. Try to remove "v"(because it was
declared as a vector attribute in the previous wrangle) and you'll get the same error.

Also if you put in the last wrangle something like v@a; it works as well.

[jamesr]

Oh yeah I see that. I guess that sort of works, but I'd stay away from doing it that way since it's not really working as expected. You shouldn't actually need to put the v@ in the second wrangle in this case.