Export - Nuke

 This use case shows how to export data from a graph-node.

Template

  How to export data from an animated translate Knob. 11 frames (1, 10, 20, .., 100) from 1 to 100 are exported.
export creation
<Creation id="transformExport" filename="export/transform.txt"/>
process
<Process id="exportNodeCompositing" type="compositing">
    <Param name="reset">true</Param>
    <Node name="read" create="Read" pos="0;0">
        <Param name="file">file(wood)</Param>
    </Node>
    <Node name="transform" create="Transform" link="read" pos="0;100">
        <FuncParam name="translate" type="square" frames="1-100/21">
            <Param name="begin">0;100</Param>
            <Param name="end">100;0</Param>
        </FuncParam>
    </Node>
    <Node name="write" create="Write" link="transform" pos="0;150"/>
    <Export creationId="transformExport">
        <Param name="frames">1-100/11</Param>
        <Param name="transform/translate.x">x</Param>
        <Param name="transform/translate.y">y</Param>
    </Export>
</Process>
graph-node
Curve Editor
result: transform.txt 
frame;x;y
1;0.0;100.0
10;17.0;82.0
20;34.0;65.0
30;50.0;49.0
40;63.0;36.0
50;74.0;25.0
60;83.0;16.0
70;90.0;9.0
80;95.0;4.0
90;98.0;1.0
100;100.0;0.0