As we've used SmartDashboard 2.0 (SFX) over the last two years, we've found that the built-in graphing utility just isn't good enough, so we made our own version.
It can be found at
https://github.com/Nashoba-Robotics/SmartChart
Advantages:
- Graphs based on time, instead of based on when a new data point is sent to the dashboard
- Graph can be reset
- Graph can show multiple data sets simultaneously, by sending SmartDashboard a string with the format "[var1]:[var2]:[var3]". Eg. "1.0:2.3:5.6"
- Graph can export data to a csv file in the location USER_HOME_DIRECTORY/SmartDashboard/VARIABLE_NAME.csv
To install, download
the most recent release, and move the .jar to your USER_HOME_DIRECTORY/wpilib/tools/plugins/ folder.
BONUS: In the repo, there's also a SmartDashboard USB Camera extension that flips the image upside down, so if you have an upside-down camera on your robot, the output is more useful for your drivers.
Like fishing, some may get away as you are reeling them in, but never letting out enough line to get the big ones at the bottom is just disappointing. - Eric O [more] 
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