Graph Trend Line between 2 points changing


CH2014

Recommended Posts

I've noticed that if DF has been switched OFF for a few days. The trend line between the data points that DF was switched OFF keeps changing every few seconds. See the attached images (period: day 17th and day 18th). The graph is a 7-day graph. It's not a major problem as DF will normally be ON all the time. I was just looking for any suggestions on how to stop this.

 

 

 

 

 

 

image1.jpg

image2.jpg

Link to comment
Share on other sites

It is because of the way DAQFactory optimizes the graph data on large data sets.  It does a boxcar min/max and as new data comes in the boxcar locations change causing those mins/maxs to change slightly, especially at edges like when no data is coming in.  This can make the connecting line jump around.  Normally you can't see it because its only one pixel.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.