Hello Peter, I don't know which help file you're looking at, but the following is from the MapBasic (v6) help file:
The ObjectLen( ) function returns the length of an object expression. Note that only line and polyline objects have length values greater than zero; to measure the circumference of a rectangle, ellipse, or region, use the Perimeter( ) function. Regards, Warren Vick Europa Technologies Ltd. http://www.europa-tech.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Peter Taylor Sent: Friday, February 01, 2002 6:43 PM To: MI-L List Subject: MI-L length of an arc Hello! I have a table with lines, polylines and arcs. I'm trying to calculate the length of an arc. SQL Select select columns ObjectLen(obj, "m") Positive values are returned in browser for a line, polyline ... but the arc returns a length value of 0 According to Help menu ObjectLen( obj , str ) Returns the length of the object. The str value specifies a distance unit name such as "mi" or "km". Only line, polyline, and arc objects have non-zero lengths. Am I doing something incorrect? _______________________________________________________________________ List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MapInfo-L" in the message body. _______________________________________________________________________ List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MapInfo-L" in the message body.
