Regression line in Scatter Plot

[Onjai]

@zioludo Re: Creating Scatter Plot with regression line
Thank you for the regression line plotter component. This is very useful visualization.

However the node will not create a regression line if values are less than 1. I think the Round function in the “calculate range to plot” metanode is set to round to an integer and my values are decimal, so the round function results in Min/Max values of 0 and no regression line is drawn.

Is there a workaround that I can incorporate?
Regards.

[zioludo]

Dear Onjai,

Let me have a look at it… it has been a while I did not work with that node.
Do you have some test data to share?

KR

Ludovico

[Onjai]

Hi,
Attached excel file of test data. The workflow is simple. see attached image.

The regression plotter node is configured as follows:

When the node is executed, a number of errors are recorded, as follows:

test_data.xlsx (9.0 KB)

Any assistance would be appreciated.
Regards.

[Onjai]

The line plotter looks like this:

If I change the values of pkht (by factor of 1000X) to integers, the regression line is drawn and looks like this:

Hope this information helps.
Regards.