I’m using a Trend Gadget in groov View via a PC browser to display trend data, voltage and current. The trend data will display in the Handheld format on the front of the groov EPIC display but will not show up on the PC browser display, see below.
groov EPIC Display
Browser Display
Why is this happening?
dkmarion
What firmware version is the EPIC running?
I cant recall seeing anything exactly the same as this before, so would like to know a bit about the system.
What browser are you using on the PC?
Have you tried incognito mode?
What firmware version is the EPIC running?
What browser are you using on the PC?
Have you tried incognito mode?
Dale
I’ve never found a reliable way to reproduce this particular issue. It has something to do with the chart drawing library we use getting confused trying to plot lines at a particular resolution: sometimes you can resize the window and start seeing the data, but then going back to the size you want the window at loses it again.
If you want to contact product support and provide a backup of your project with the active trend data I can take a look at it and see if there’s anything I can do.
Still does it after restart.
Ok, thanks for that quick check.
As @Jonathan_Fischer suggested, hit up our support group and get a ticket in the system to take a deeper look at whats going on.
I’m having the same issue, was there a resolution to this one that can be shared?
In this case he was able to fix it by switching his trends from Interactive to Classic. The trend length was short enough that the gadgets will render as Classic anyway, so there wasn’t any loss of behavior for him.
There are a number of things that can confuse the charting library we use: most commonly it happens when we get data with irregular gaps in it, like if the device that is being trended goes offline or responds irregularly. The code in the charting library that determines whether or not to draw a continuous line fails and either renders poorly, or not at all. It also interacts with the size in pixels that the chart is being rendered at, which is why we might see it render on the handheld view but not the desktop, or it might draw correctly after resizing the browser window. It also usually resolves itself as time moves on and older data expires.
In this particular case I don’t know what the cause was. It was a short trend, so the data should have cycled out within minutes, eliminating gaps as a suspect. The issue also didn’t present when he restored his project on another computer.
