How to create an empty coordinate?

[DylanXie123]

I need to use a list of coordinate to plot math function ln(x) where x ranges from -5 to 5, but it doesn't seem to have a way to create empty coordinates where x ranges from -5 to 0.

I tried to use FlSpot(-2.0, null) or null to represent an empty coordinate, but none of these work.

Are there any solutions here?

[imaNNeo]

I didn't get you, may I ask you to explain it more clear?

[DylanXie123]

I need to draw something like this

I can use some coordinates in [0, 5] to plot ln(x) in positive x-axis, but I also want to use some empty coordinates in [-5, 0] to negative x-axis.

[imaNNeo]

Why empty states?

[DylanXie123]

😂 I want user to be able to scroll to see function image in all ranges.

[imaNNeo]

Dude, you can draw it with transparent color,
does it make sense?

[DylanXie123]

Sounds a great idea, thanks for your help
👍👍👍

[imaNNeo]

Or maybe you can set the minY to -5,
I think it will work too.

[DylanXie123]

Thanks a lot, I'll try that

[imaNNeo]

You are welcome.