I have added a Wiki page on the sample programs.
The sample programs need rationalizing and including on the SD card distribution. I have described the main ones. Some of the others may be deleted.
I have updated the EV3Chart sample, which runs on the PC, and uses jfreechart to draw charts. It uses Java RMI remote access to read the sensor values.
It supports real-time bar charts and line graphs. You specify the sensor and other parameters in a properties file.
You currently need to pull the latest head version of EV3 master to get the latest version of this. It also needs the latest head version of EV3Menu running on the EV3.