Problem with XY graph

[dctoni]

Hallo

I want to build a XY Graph ( Voltage vs. Current) . Is there anyway to build the Graph without using FOR Loop but only WHILE Loop.

The problem is when I use WHILE alone , I'll get just a point on my Graph .

to Understand what i mean plz take a look  on the attached LV

Thank you

Toni 

[MikeS81]

Hi dctoni,

i hope this example helps.

Mike

[Dennis_Knutson]

Sure. Don't reset the express VI with every iteration. There is an input called reset on the Build XY Graph and the default is True. Just wire a false constant to it. The on-line help says that the default is False but if you right click on the input and select Create Constant, you get a True. If you opne the Express VI, you'll also see the True state as the default.

[dctoni]

thank you for your replay

I tried to do like  you told me but it dosn't work on my LV , I don't know where is the Problem

can you help me plz

Toni

[MikeS81]

Hi Toni,

add a false constant to your express vi and then it works.

Mike

[dctoni]

Thank you guys 

  it works