Question

I currently have sensor data being dumped into a database. This is raw data, and needs an equation applied to it in order for it to make any sense to the end users. The problem I have, is that I do not know most of the formulas yet, and would also like the program to be flexible enough that when a new sensor is added to the system, the user would be able to enter in the calibration equation that would be able to convert the raw data into something useful.

I have never worked with letting a user enter in an equation to manipulate data. I would appreciate any input that might help. What direction should I be looking, should I be trying out lambda expression trees, evaluating the equation and compiling it using CodeDom, or looking in another direction? I have never done much with either lambda expression trees or CodeDom, and like always and on a fairly tight schedule, so the learning curve does count. I will have the opportunity to go back and make it better at a later date, they just need it up and running for now.

Thanks for any input.

Answer 1

I highly recommend FLEE for expression parsing/evaluation. It has a custom IL compiler that emits fast IL that doesn’t have the memory problems that CodeDOM has.

It also has the desirable attribute of being easy to code with and extend.