HELP! Question about multi-dimensional data sorting in CLIPS

[Cindy Chen]

Hi there,

Glad to find this group! I am new to CLIPS, although I have went through the basic programming guide but I am not sure about the complexity of my idea if I use CLIPS. 

Could anyone tell me which of the following plan would be easier to do in relatively short time? Thanks in advance!

The main idea: 

I want to sort a 100x2 table (from stored external files) according to the contents (numbers) in 1st column, say, from the largest to the smallest. And then I will need the corresponding contents (characters) in the 2nd column and print them out following the sorted order. 

Example:

Here are the contents in original files:

3, aa

5, bb

2, cc

8, dd

After sorting the 1st column:

8, dd

5, bb

3, aa

2, cc

And I need to print out in order:

dd

bb

aa

cc

That's all I need.

There are two plans:

1) I would use CLIPS itself to realize by using "sort" function. But the difficulty here is that I don't know how to sort a multi-dimensional data (while preserving the 2nd column) in CLIPS. It seems that CLIPS doesn't have "array" data type; so I don't know if there is any way to do that.

2) I would use C++ to read the external files and sort the result; then pass the result to CLIPS and let it print out the results one by one. The difficulty here lies in the interface between C++ and CLIPS. Could you give me any advice? An example code is highly appreciated. 

Thank you very much and I am looking forward the answers. 

-Cindy

[Artem Novikov]

(deftemplate v

    (slot f)

    (slot s))

(assert (v (f 3)(s aa)))

(assert (v (f 5)(s bb)))

(assert (v (f 8)(s dd)))

(defrule Out

    ?f1 <- (v (f ?fa)(s ?sa))

    (not (v (f ?fb&:(> ?fb ?fa))))

=>

    (retract ?f1)

    (printout t ?fa crlf))

(run)

8

5

3

среда, 19 февраля 2014 г., 17:46:40 UTC+2 пользователь Cindy Chen написал: