I attach a site to help sort out several issues posed in your questions. You'll find a brief discussion of the issues of visual exposure - its a bit more tricky that you might assume...
http://www.innovativegis.com/basis/MapAnalysis/Topic15/Topic15.htm Once you have the x,y,z information imported to MapInfo, you can readily surface and analyze it for visual exposure via MapCalc. You may download a trial ware version from http://www/redhensystems.com/mapcalc. RHS neil -----Original Message----- From: A. T. Beckett [mailto:[EMAIL PROTECTED]] Sent: Monday, March 11, 2002 2:22 PM To: '[EMAIL PROTECTED]' Subject: MI-L The intervisibility problem Importance: High Hello all at the list, here are my questions. I want to map areas of visibility from a geographical point, and present the results in MapInfo. I know that both Vertical Mapper and Maptitude have this functionality. My terrain data is UK ordnance survey 'Landform', which is available in .dxf format (& also .NTF) and comprises a rectangular grid of points defined by x,y & z co-ords in the UK ordnance survey metric grid system. Does anybody know if either tool can handle data in this form? As .dxf I can also import into MapInfo, but can the z dimension be accessed for thematic use (hillshading)? Any views/experience on which of the above tools is the most effective? Any other tools which provide similar functionality and are MI compatible? I also use AutoCad Map (V, 5) has anyone come across applications which provide this functionality in that environment? Thanks in advance. Andy Beckett _______________________________________________________________________ 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.
