Howto set a python parameter in a text box

[Rc Spam]

Hi,

How to write a user python parameter in the text box of Text Node.

How to escape its name.

thanx

[Alexandre]

You would have to set an expression on the text parameter of the Text node referring to the python parameter 

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[Rc Spam]

If i write for example "thisNode.testParam.get()" in the "set expression" of text param of the Text Node, testParam being a new user parameter (using the user param manager), the value of testParam should be displayed ?

I have surely misunderstand something here,  if i do that, nothing is displayed

Very sorry for my misunderstanding...

[Rc Spam]

Someone can tell me what have i do wrong ?

Thank you

[Alexandre]

You should post a video so we can tell you what’s wrong, here is how I do it:

On 20 Jun 2015, at 09:33, Rc Spam <rcs...@gmail.com> wrote:

Someone can tell me what have i do wrong ?

Thank you

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[Rc Spam]

what you do in your screen shot is ok for me.

I just want that the value of a user parameter create with "user parameter manager" (right clik on properties node) appears in the text canvas of the viewer.

e.g. useful for write the frame number in viewer or to write some variables in a text....

I just want to know how to write it in the text box in order to natron interpret it as variable and not as text.

[Alexandre]

You have to set an expression on the text parameter, eg. :  thisGroup.otherParam.get() + “blablabla”.

The Text field does not recognise expressions by itself 

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[Rc Spam]

Here is screencast.

thanx

[Alexandre]

The text parameter of the Text node is holding a String, while you are trying to input it a number.

You have instead to write the following expression:

str(thisGroup.numericParameter.get())

This will cast to string the number 

On 20 Jun 2015, at 10:34, Rc Spam <rcs...@gmail.com> wrote:

Here is screencast.

thanx

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[Rc Spam]

Very thanx, that's all i wanna know, i'm not a python geek ;)

[tagliapietr...@gmail.com]

Hi there,

is it possible to declare the value of the parameter from command line?

Bests