# Showing several complex values (realpart + i\*imagin part) in a cartesian or an polar coordinate system

**URL:** <https://discourse.nodered.org/t/showing-several-complex-values-realpart-i-imagin-part-in-a-cartesian-or-an-polar-coordinate-system/64429>\
**Category:** Dashboard\
**Tags:** chart\
**Created:** [27 June 2022 16:37 UTC](https://discourse.nodered.org/t/showing-several-complex-values-realpart-i-imagin-part-in-a-cartesian-or-an-polar-coordinate-system/64429 "2022-06-27T16:37:26Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [28 June 2022 11:42 UTC](https://discourse.nodered.org/t/showing-several-complex-values-realpart-i-imagin-part-in-a-cartesian-or-an-polar-coordinate-system/64429/6 "2022-06-28T11:42:32Z")

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Here is another demo automating chartjs

> [@Problem with X/Y graph with ui\_graph](https://discourse.nodered.org/t/problem-with-x-y-graph-with-ui-graph/46713/8):
>
> Here is a scatter demo using chart.js... [4CJBilIHJz] [{"id":"acbdb34e9e6d9720","type":"change","z":"553814a2.1248ec","name":"random x/y","rules":[{"t":"set","p":"payload","pt":"msg","to":"(\t $minimum := 1;\t $maximum := 100;\t $x := $round(($random() \* ($maximum-$minimum)) + $minimum, 0);\t $y := $round(($random() \* ($maximum-$minimum)) + $minimum, 0);\t {\t \"x\": $x,\t \"y\": $y\t }\t)","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":fals…

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_[View the full topic](https://discourse.nodered.org/t/showing-several-complex-values-realpart-i-imagin-part-in-a-cartesian-or-an-polar-coordinate-system/64429)._