Labview Chart vary zero position of individual plot?

[karthik9]

As I'm sure here is no clean way of having a Digital Waveform Chart Plot, so I would like to know if we can have the y-axis 0 reference be shfted up or down for indiviual plots?

So it behaves like a Digital Chart? 

[GerdW]

Hi karthik,

either add an offset to each plot or add multiple y scales...

[karthik9]

How to add offset for a Plot, isn't offset available to an Axis only?

[mikeporter]

An offset is simply a constant value added to.the data point value. Say you have two data streams both varying between 0 and 1. Normally they would plot on top of each other, but add 1.5 to one of them and now it will be varying between 1.5 and 2.5 so it will plot above the other.

Mike...

[mikeporter]

With a chart you can also have stacked plots.

Mike...

[karthik9]

I cannot used Stacked PLots as I wlll be having both Analog & Digital Values, while I require the Analog Values Overlayed. whereas adding offset to each plot by a unit or so would display wrong readings on the Digital Display/ (Can use my own Display.... But difficulty would increase as the Number of DI can vary) and during export option

[GerdW]

Hi karthik,

whereas adding offset to each plot by a unit or so would display wrong readings on the Digital Display

Fake the Y axis labels using some string indicator(s)…

But difficulty would increase as the Number of DI can vary) and during export option

Use seperate graphs for analog and digital data. Use a waveform graph and a digital waveform graph, respectively.

[karthik9]

I'm sorry but the above mentioned methods would not work out for me as I would have a 'Y cursor,. Is tehre any other way or any addons?

[GerdW]

Hi karthik,

the above mentioned methods would not work out for me as I would have a 'Y cursor.

You really should learn to provide ALL needed information in the first post…

And providing an example VI with some example data is always a good idea to explain the problem you want to solve!

Why should a Y cursor be a problem here? When you already fake the Y axis you can also implement reading the current cursor position and re-correct the Y reading to your digital waveform data!

As Mike suggested you know the offset added to each plot. When the cursor reading is between 1.5 and 2.5 you know you have to subtract 1.5 to get the proper value of this specific digital plot…