12-21-2010 02:16 AM
Hello,
Im having a slight problem when importing LVM data into a table in Labview frontpanel. The X-value (which represents time) doesnt appear on the table. Only the Y-values will be showed. What are the modifications that I should do to overcome this problem?
Attached are my .vi data and also .lvm data
LVM DATA :
LabVIEW Measurement
Writer_Version 1.00
Reader_Version 1.00
Separator Tab
Multi_Headings No
X_Columns One
Time_Pref Relative
Date 2010/10/26
Time 11:18:44.625
***End_Of_Header***
Channels 2
Samples 409500 409500
Date 2010/10/26 2010/10/26
Time 11:18:44.625 11:18:44.625
X_Dimension Time Time
X0 0.000000 0.000000
Delta_X 0.000008 0.000008
***End_Of_Header***
X_Value Channel 00 [V] Channel 01 [V] Comment
0.000000 1.771725 1.252918
0.000008 1.766232 1.253529
0.000016 1.775692 1.254444
0.000024 1.804685 1.254444
0.000032 1.783017 1.250172
0.000040 1.786679 1.249867
0.000048 1.805600 1.246204
0.000056 1.781186 1.250172
0.000064 1.785763 1.246510
0.000072 1.770199 1.245289
0.000080 1.792477 1.245594
0.000088 1.769894 1.244984
0.000096 1.782712 1.245594
0.000104 1.784238 1.241322
0.000112 1.770199 1.241627
0.000120 1.779355 1.239490
0.000128 1.755245 1.240406
0.000136 1.787289 1.238270
0.000144 1.780881 1.233387
12-21-2010 03:54 AM
Hi there!
I think this may be caused by the fact that the .lvm file reads 2 channels - the two voltages in this case, and the time stamp is classed as a row header. In this case, could you try changing the Table Express table properties to enable the "show row headers" button.
If this doesn't work, further investigation to check the file data could be made by applying a "Convert from Dynamic Data" function and then adding an indicator to it automatically. This can be done anywhere on the dynamic data line outside of the while loop (between the while loop and the Build table function perhaps?). This will allow you to see what is going on with the input file data.
Please let me know how you get on and I hope this helps.