build waveform

[Christian_nor]

Hi,

See attatched .jpg. Is it a simpler way to build this plot?

I want to plot datas from 3 different measurements in 3 graphs, with the system time on the x-axis. The problem is that some samples are missing and therefore the time between samples can vary.

[GerdW]

Hi Christian,

it seems you already have chosen the simplest type of waveform building. (Btw. please save your pics as real jpg or even better as PNG).
For your second question:
The waveform datatype is made for equidistant samples. If some samples are 'missing' you get in trouble: either the timestamp is not correct (as it gets calculated from t0 and dt) or you have to fill in the missing samples.

[Christian_nor]

Thnx,

Another question: I want to save parts of the datasamples to a file which can be opened in excel. When a button is true I want the data which goes to the chart to also go to a file. 🙂 I`ve been struggeling with this, but can`t seem to find a good solution...

Help?

[GerdW]

Hi Christian,

you can do it like this:

I used LV7.1 for this example, in LV8+ you can/have to use the newer file functions. There is also a 'Write to spreadsheet file' function which also does the formatting of the data.

Message Edited by GerdW on 11-02-2006 04:13 PM