problem, ploting a graph

[bangbit]

I'am confius to make graph (x-Y) graph. I dont know where i put a array to make x-y graph for 2 output such as efeciency Vs BSFC, and othters.


thx

[Jorge_Amaral]

Hello,

See the attached file.

[Jennifer_R]

Hi bangbit,

If you want to change what is graphed without calculating new values, you could include a Timeout event.  I added that to Jorge's code and attached the file as combustion_data_acquisition[2].vi. 

[bangbit]

i'm sorry, i'am currently using labview 7.0/7.1 , can you pls save it in older version (7.0), thx for that.

[Jennifer_R]

Hi bangbit,

Sorry about that.  Here is the VI saved for LabVIEW 7.0. 

[bangbit]

Thx Jen and Jorge for your respond. But i'm liitle bit confius. I tried to change the X and Y point to Power and Effeciency, it did'nt work well. Nothing appear in graph...actually i want to make effeciency and power graph ( = x-y graph)
and how can i shown more than one graph ? i mean 3 graph etc.

Oh ya, i try to make alternatif of this (is attached) .vi but i face a problem to with graph and table. Ok, i'm using formula not formula node. There is 3 formula and 3 result.  I'm going to plot Each result into graph, it means there are 2 graphs but it could be more than 2.

problem with table is ; i tried to merge 3 signals to 1 signal using signal merger and i wired it to tabel. When im running .vi the result only appeared in 1 rows, when i change the input, first measurement is deleted with 2nd measurement. i try using array function, it failed.

and you see RPM parameters/input ? Actually i want to calculated using certain RPM, I mean, There wiil be 10 measurement and i want to set 10 values for RPM. How to set it automatically ? so we dont have to change RPM value each time measurement...


regards
maput
Mechanical Engineering University Student at Last year Project.






Message Edited by bangbit on 03-09-2008 09:37 PM

[RavensFan]

I would recommend looking at the online LabVIEW tutorials

LabVIEW Introduction Course - Three Hours
LabVIEW Introduction Course - Six Hours

[bangbit]

thank you raven, but my internet connection in here is very bad i coulndnt watch it onlinely. is there any way to safe it and see it at home ?

BTW, here is new program that i have made by my self (yihaaaaa...). My questions is ;

1. How to set RPM input become severals value. Like, i want to calculated power with 1000RPM, 1100RPM, 1200RPM, etc. But automatically. Cause this program can just only put the RPM value manually.
2. How to made 2 or more line in one graph ?I mean for 2nd measurement we have new line but it same graph with old line one. (sory if you dont understand my point, difficult to explain in english 😞 )  ; here is the example. Let say i have finished my first measurement, i have one set line in graph. I want to move to 2nd measurement. And when i finished 2nd measurement we have 2nd line in same graph. Just for to  compare different input.

thank you for your help

regards
maput

[Aashish_M]

Hi Maput,

Please refer to the below links;

Use Merge Signals to compare two waveforms in one graph.

http://ae.natinst.com/operations/ae/public.nsf/web/searchinternal/01ab60fa9a4eda1b86256d1a004acb63?OpenDocument 

Hopefully this helps!!

[RavensFan]

Aashish,

The links you post that begin with ae.  are not accessible to anyone outside of NI.