Perspective Graph an Array

Ignition
1

I have an array with 1000 elements that I’m trying to graph in Perspective. Is there a way to do this without making 1000 bindings? I think I need to build an Expression Structure of some kind can’t quite figure it out.

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2

You should able to do this with the XY chart. Add a key to datasources, add an expression binding to the array tag, and add a script transform like this:

return [
	{
		"row": index,
		"value": value
	}
	for index, value in enumerate(value)
]

Then just configure the ‘X’ axis as row and the ‘Y’ axis as value.

1 Like
3

Fantastic! thank you!

4

If I wanted to parse out just every x rows, would I use something like something like “if (value % x == 0)”?

5

Yes, you can add that to the list comprehension, e.g.

return [
	{
		"row": index,
		"value": value
	}
	for index, value in enumerate(value)
	if index % 3 == 0
]
1 Like
6

Thank you.