scale Y axis manually using Knob control ?

[abikutn]

Hello guys,

Is there a way I can manually control the scale of Y axis using a DIAL or KNOB for waveform graphs ? 

Please see attached VI. 

Thanks.

[apok]

right click on waveform chart, create property node is your friend....

Spoiler

[abikutn]

I accept that property node works. But the waveforms I am expecting doesnt have any fixed Y range. Sometimes it may be on 4300 otherwise on 10,000 range. So each time I cant keep changing the knob range. Please find the attached Vi to see what I tried. 

[abikutn]

What if the minimum and maximum range automatically adjusts itself, just like how we have autoscale enable. And then I can manually and easily control the the range of Y I want. Right now the waveform is out of range from the given values, enabling the autoscale brings it into position.

Just like a oscilloscoe,

[apok]

then autoscale the graph with wiring the Y value to the knob maximum property node with an additional value for some leg room.

[abikutn]

Oh we can do that! ... Let me try. Thank you

Abhi 

[abikutn]

Last question, how can I get the Y value from the autoscaled graph ? Is that also using property Node.

[apok]

get it from your data array......use "array max & min" function, take the max and wire the knb property node max value, with some added leg room value.

Spoiler