Basically I have a grid of sensors like this:

.      .      .      .      .      .      .
.      .      .      .      .      .      .
.      .      .      .      .      .      .
.      .      .      .      .      .      .
.      .      .      .      .      .      .

etc. It's a grid of 31 x 12 sensors xD

Currently I've figured out how to program the Arduino to convert adc data to temperature values. I used Processing to create a GUI interface and log the data into a text file. I also have Processing reading the temperature values from the text files and storing them into arrays. I'm just having trouble figuring out how I could create a thermal image from the sensor values. I'm new to Processing but not programming. Any help or ideas would be greatly appreciated.