Hi Rick, To generate additional points based on some sort of model, you will have to use some form of grid/3D program such as Vertical Mapper or Grid Analyzer.
After you've created a more dense grid, you can still use the previously suggested method to calculate min/max/average per defined polygon. The utilities mentioned above may even have tools for it. HTH Best regards / Med venlig hilsen Lars V. Nielsen -------------------------------------------------------- Hvenegaard & Meklenborg Rugaardsvej 55, DK-5000 Odense C Denmark http://www.hvm.dk ----- Original Message ----- From: "Rick Luangkhot" <[EMAIL PROTECTED]> To: "Lars V. Nielsen, GisPro" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Wednesday, October 15, 2003 10:28 PM Subject: Re: MI-L Statistic on Thematic layer > > > > > > Hello Lars, > > Thank you for you suggestion. I'll have to try it. But there is another > problem I would have. The points are to disperse. Where at the thematic > map interpolates from the point data to get a more accurate depth reading. > Is there a way where I can create a more concentrated points and have the > value for that point at that location populated with what the thematic > layer reads/interpolates as the depth value? > > Thank you much, > > Rick > > PS using MI 7.0 on Windows2000. > > > > "Lars V. Nielsen, > GisPro" > <[EMAIL PROTECTED]> To > "Rick Luangkhot" > 10/15/2003 03:16 <[EMAIL PROTECTED]> > PM cc > <[EMAIL PROTECTED]> > Subject > Please respond to Re: MI-L Statistic on Thematic > "Lars V. Nielsen, layer > GisPro" > <[EMAIL PROTECTED]> > > > > > > > > > Hi Rick, > > First you add an id to all point layer records depending on which polygon > each belong to. This id must be unique, and can be added > to the polygon layer using ROWID if necessary. It's transferred to the > point layer table by a join that specifies point.OBJ within > polygon.OBJ. > > You then issue a select statement on the point layer table, querying for > Min(depth), Max(depth) and Avg(depth), grouping the result > by the polygon id. > > This result can be transferred back to the polygon layer by joining on the > polygon id. You probably have to save and re-open the > grouped query first, but then it'll work. > > Best regards/Med venlig hilsen > Lars V. Nielsen > GisPro, Denmark > http://www.gispro.dk/ > http://www.gispro.biz/ > > ----- Original Message ----- > From: "Rick Luangkhot" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, October 15, 2003 9:10 PM > Subject: MI-L Statistic on Thematic layer > > > > > > > > > > > > Hello Listers, > > > > I have point data that has water depth values. I created a thematic map > > from these points. I have polygons that I would like to populate with > the > > values of max, min and medium of what is from the thematic map for each > > enclosed polygons. > > > > Is there any way to do this? > > > > Thanks in advance, > > > > Rick > > > > > > --------------------------------------------------------------------- > > List hosting provided by Directions Magazine | www.directionsmag.com | > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > Message number: 8746 > > > > > > > > > --------------------------------------------------------------------- > List hosting provided by Directions Magazine | www.directionsmag.com | > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > Message number: 8749 > > --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 8750
