I need a smaller overview of the actual waveform graph just to know the exact position where I am, when I zoom in and out of the graph for measurement purpose with a position cursor. Could anyone please help me how to do this. Thankyou in advance
The actual mechanism can be different, depending upon exactly how you want to do it, but the basic idea is as follows:
Create a new graph below your primary graph. This is your overview graph.
Use scale range change events on the primary graph to trigger redraws of your overview graph
Use three traces (with timestamps) on the overview graph to show the before, selected, and after portions of your waveform in different colors. Scale the number of traces as needed if you get both X and Y selection.
Thanks for the reply. I tried this method but its not working. Coming to the data file, Actually I'm working on a TDR oscilloscope. I need to compare the graph between a failure device with a good device. I dont have any actual waveforms from the oscilloscope so i'm just trying with sine and triangle wave and later on i'll replace the "simulate signal" block with the instrument driver. i'm fairly new to labview. could you please help.
When I'm trying to use scale range change events for the waveform graph i'm not able to move the cursors at all. Could you please tell me how to do it. Thanks you in advance
Your only WHILE loop waits for an event, so, to zoom and move the cursor (during that wait time), you have to build the zooming code in a separate parallel WHILE loop.
