LabVIEW
changing the color of a graph dependent on data?
@glskinner wrote:
How do I create an XY plot with only one output coming from the analog channel?
Well, if you have only one output, you don't have x and y, but only one of the two. 😮
You could e.g. define the timestamp or sequence number as X if you want, but your question is way too open ended at this point. If the data is spaced equally in time, all you need is a waveform graph. How does the data look lile? What do you want to display?
@glskinner wrote:
The data is a sine wave.
That seems irrelevant. You still have not answered the important question if the data points are spaced equally. an XY graph is only needed if they are NOT spaced equally in X. Your example code currently has a chart.
@glskinner wrote:
I have a boolean control where I start taking measurements of the sine wave after 2 "highs" of my digital in (ttl). The graph is in the run state constantly. I'd like to change the plot color of the sine wave when I start taking measurements.
Is it automatically detecting these two highs or are you watching and pressing a control manually if this happens? If the code counts the two highs automatically, it should not be a control, right?
@glskinner wrote:
My boss wants to see where the data begins being recorded.
That also seems irrelevant, unless he has a certain kind of color blindness.
As has been said before, you simply need a graph with two different plots. make one NaN and the other carryting the data, then switch between the two, depending on state.
The example you have attached earlier seems overly complicated and does not make a lot of sense, but you already have a case structure and a chart. All you need is place the chart terminal after the case structure and send the data to one or the other plot while setting one to NaN.
Here's a quick draft.
Sorry, I don't have DAQmx installed, so I don't know what you actually get (you code is broken on my rig). Why don't you set the read function to array instead of waveform, for example?
