working in an asset.
I use an Operator Path.

I want to read parameters from the node of the operator path is connect to.

if I use this vex code in a wrangler, it works:


“../node” is my operator path where I connect the node, and “parameter” the parameter I want to read.

but when I use that code into a node parameter, as a vex expression it does not work.

I mean "ch(“../”+ch(“../node”)+“/parameter”)"

thanks

did you mean ...+chs("../node")+...?

I tried chs and ch. but it does not work.

ops.. it works… maybe I put it wrong first time.

jsmack
did you mean ...+chs("../node")+...?

thanks for makes me check it.

in Hscript expressions you better use chsop() instead of chs() it will handle conversion to absolute path for you automatically so you just need to add parm name

so for getting the numerical parm using expression it would be something like:

tamte
in Hscript expressions you better use chsop() instead of chs() it will handle conversion to absolute path for you automatically so you just need to add parm name

so for getting the numerical parm using expression it would be something like:

ch(chsop("../node")+"/parameter");

Thanks you tamte for this tip.. I will do it.

I have another question
How can I get a ramp with an expression? include all its points or colors?

thanks for your support

Gerardo Castellanos
How can I get a ramp with an expression?

hard to say what the actual question is
In Hscript
- if you actually want ramp to link to another ramp dynamically by providing operator path I don't think you can do that
- if you just want to link 2 ramps, the easiest is to RMB on ramp label/copy parameter and on another ramp RMB/Paste Relative References
- if you just want to sample the ramp at certain position you can use chramp() [www.sidefx.com]

In VEX:
- there is chramp( [www.sidefx.com]) too, which can sample ramp at certain position
- if you need more control chi() will give you number of keys then, you can also iterate over all keys and build array yourself, then use spline() function for example to interpolate or ehatever

in Python:
- you can use hou.Parm.evalAsRamp() to get hou.Ramp object and do whatever you need, whether it's a lookup or other stuff

tamte
hard to say what the actual question is
…

thanks @tamte

I want to do same I did before. I have an operator path and want to copy a ramp parameter of that node in another node using expressions.

Gerardo Castellanos
I want to do same I did before. I have an operator path and want to copy a ramp parameter of that node in another node using expressions.

so to summarize previous answer, not as a dynamic link between 2 ramps based on operator path, but you still have plenty of options to lookup any value from a ramp parameter based on operator path

I think i want to do the same thing.

What i`d need is something like this but actually working


To get

At iteration 0

Mine of for use in a regular expression not in a wrangle or anything like that

Id also like to change a group name according to the iteration.