saving data in intensity chart over time

[N.Ghrayeb]

Hi, 

I'm trying to save my real time data that i'm displaying it over intensity graph in an intensity chart. 

i checked the example in labview > intensity graph and chart data types. but still couldn't solve my problem. 

i'm working with sensor array that is displaying my data over intensity graph in good and accurate way. 

i'm trying to save those data in intensity chart to review it over time. 

i added a scrollbar to the x axis in intensity chart to review the old data by time

but every time when i'm running my vi, those data display on intensity chart, but never saved, just keep flowing. if i tried to scroll the x axis to previous time while the VI is running, i lose everything directly and the intensity chart start displaying the new data. 

when i stop the VI from running, the scrollbar in intensity chart grayed directly and i can't check anything. 

how can i solve this problem, any suggesting.

i tried to do a for loop with time delay and pass the data to chart, but still not working. 

i tried a state machine and the same not working. 

please check the snippet 

[Gregory]

Right click on your chart and press chart history length. The default is 128. If you are showing all your data, then there is no scroll bar, if you are showing part of your data, there is a scroll bar.

[altenbach]

A chart is for displaying, not for saving.

[N.Ghrayeb]

good morning, 

i already did this as a first step when i was configuring the Chart

[N.Ghrayeb]

Good Morning, 

if you can go to LabVIEW > Find Example > search (History) > Intensity Graph and Chart Data Types. 

run the VI and you'll know what i'm talking about. 

i do understand that Chart is displaying the data but i'm trying to see my data over time, so maybe save is incorrect word 

[Gregory]

I will refer to my earlier post: If you are showing all your data there is no scrollbar. Have you looked at the x-axis? If it is set to auto-scale then it could be showing your entire chart history. If you'd rather scroll show less data and scroll through it, then you can turn auto-scale off and manually set the scale.

But, do compare how many points are on the x-axis and how long your chart history is.