<DIV>Thank you for your help. Actually, I had a problem calculating area of forest inside any circle area and draw map with mapserver with this circle. But I didn't know how to start with postgis instead of postgis and postgresql documents.</DIV> <DIV> </DIV> <DIV>Thank you again.</DIV> <DIV>Krung<BR><BR><B><I>David Bitner <osgis.lists@GMAIL.COM></I></B> wrote:</DIV> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">If you are going to be doing much work with PostGIS, this question is<BR>better suited to the PostGIS users list that can be found along with<BR>documentation for PostGIS at http://postgis.refractions.net<BR><BR>To create a circle with an x,y, and radius all you will need to do is<BR>a buffer of an x,y coordinate. For example: buffer(makepoint(x,y),r)<BR>On 1/13/06, Krung Saengpole <SAENGPOLE@YAHOO.COM>wrote:<BR>> Hi all,<BR>><BR>> I'm a newbie with postgis and postgresql. I'd like to
convert circle<BR>> '((x,y),r)' in postgresql to geometry for using with postgis functions. How<BR>> can I do it? Please give me an example or some function scripts to start<BR>> with.<BR>><BR>> Thank you.<BR>> Krung<BR>><BR>> ________________________________<BR>> Yahoo! Photos – Showcase holiday pictures in hardcover<BR>> Photo Books. You design it and we'll bind it!<BR>><BR>><BR></BLOCKQUOTE> <DIV><BR></DIV><p>
<hr size=1>Yahoo! Photos<br>
Got holiday prints? <a href="http://us.rd.yahoo.com/mail_us/taglines/holidayprints/*http://pa.yahoo.com/*http://us.rd.yahoo.com/mail_us/taglines/photos/evt=38089/*http://pg.photos.yahoo.com/ph//print_splash">See all the ways</a> to get quality prints in your hands ASAP.