Swapping x and y axis in a chart

[Onjai]

Good Day!

Using LV2015 Base Dev System, I created a six sensor temperature logging vi.  I would like to swap the x axis so that it shows each sensor's temperature value in a bar chart.  Attached is an excel chart showing what I am trying to accomplish along with my vi.  I have tried using the property nodes to flip the axis, but this does not work.  I have searched the community forum as well as other blog sites with little success.  Any suggestions?

Cheers!

[GerdW]

Hi Onjal,

no, you cannot swap axis on a chart.

Use a graph instead:

And PLEASE replace this silly sequence structure by a FOR loop to read the values of your 6 sensors…

[Onjai]

At this point, I am not able to "clean up" the vi.  I did wire a waveform graph out of the combined signals function and still cannot get it to display a vertical bar for each sensor.

[JÞB]

[Onjai]

Okay that helps.  Now I have bars but they are all superimposed on each other at x value of 0.  I changed the scale range to 0 - 8, with no change.  Any thoughts on how to show each sensor 1 through 6 along the x, as in the xcel pdf I posted?

[altenbach]

Please also vote for my related idea here. Thanks!

[altenbach · Accepted solution]

If you just want to show a bar graph of the current reading, it has nothing to do with a "chart".

A simple solution would be to use an array of clusters, each containing a tank and a string, for example. Here is a quick draft.

 

(On a side note, your sequence structure is not needed. There is also way too much duplicate code (You could do the scaling in a FOR loop or subVI, for example).

[Onjai]

Thank you Altenbach for the insights.  The vertical bars are just was I was looking for as a visual.

I used the sequence structure because each sensor receives a VISA write in hex to a specific address with a command (B101, B201, etc..) and I was not sure how to reduce that down to just a For Loop. 

Cheers!

[altenbach]

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Onjai wrote:

I used the sequence structure because

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Execution order is fully determine by dataflow and the order things are wired. Nothing would change if you would simply delete that sequence structure.

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@Onjai wrote:

... because each sensor receives a VISA write in hex to a specific address with a command (B101, B201, etc..) and I was not sure how to reduce that down to just a For Loop. 

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The only thing different between the duplicate code segments is the value of the string. So all you need is one copy of the code in a FOR loop, autoindexing on an array of strings.

(see image for some ideas. You might also want to define a finite loop rate. Don't forget to set the cluster size for "array to cluster").

I would also strongly recommend to NOT use periods in file names. They should be reserved as a delimiter before the file extension.

[Onjai]

Altenbach, Thank you for the ideas, these will work just fine!

All the best!

Cheers.