From: BENI <rajib.chakrabarti@...>
Date: 2007-03-13T21:30:05+09:00
Subject: ta-lib port for ruby using swig

I was trying to SWIG onto the ta-lib .

the ta-lib is a collection of c functions for financial data analysis.

http://ta-lib.org/d_api/d_api.html.


I was trying with one function.

the header

TA_RetCode TA_MA( int          startIdx,
                  int          endIdx,
                  const double inReal[],
                  int          optInTimePeriod,
                  int          optInMAType,
                  int         *outBegIdx,
                  int         *outNbElement,
                  double       outReal[],
                )


the c call:
Lets say you wish to calculate a 30 day moving average using closing
prices. The function call could look as follow:

TA_Real    closePrice[400];
TA_Real    out[400];
TA_Integer outBeg;
TA_Integer outNbElement;

/* ... initialize your closing price here... */

retCode = TA_MA( 0, 399,
&closePrice[0],
30,TA_MAType_SMA,
&outBeg, &outNbElement, &out[0] );

/* The output is displayed here */
for( i=0; i < outNbElement; i++ )
   printf( "Day %d = %f\n", outBeg+i, out[i] );


============

i was wondering how the typemap for the arguments  in swig will look
like.

                 1>const double inReal[],
                  2> int          optInMAType,
                 3> int         *outBegIdx,
                 4> int         *outNbElement,
                 5> double       outReal[],


Any lead will be very helpful.

btw. i have all the docs rltd to swig and the pickaxe as well.

regards