RE: MI-L buffer with Z
Try MapCalc. Want to learn more? MapInfo MIG modeling technique as related to up-slope buffering for pioneer road safety is outlined by BASIS at: http://www.innovativegis.com/basis/Senarios/Roadbuff_scenario.htm Via MIG and other like file formats you can create the variable width buffers based on adjacent slopes. Flat smooth stream areas many not need the same buffering as areas where the stream is running in rapids. Same goes for a stream that has cut in to the side of the flood plain valley. Its adjacent topography has one generally very steep side and the other gently sloping to level on the floodplain side that can meander through the landscape. MM Aka neil -Original Message- From: Randy Rath [mailto:[EMAIL PROTECTED] Sent: Wednesday, September 03, 2003 9:12 AM To: mapinfo Subject: MI-L buffer with Z Hi all, I would like to buffer a stream network using local elevation or the slope distance. The MI buffer tool uses a (cartesian) horizontal radius (X,Y to X1,Y1 = 50m). The spherical selection does not use local elevation data. Has anyone used elevation or slope distance (X,Y,Z TO X1,Y1,Z1 = 50m) to create a buffer? I will most likely use the concentric ring buffer as I will have to create more than 1 buffer. Any advice would be great... Thanks... Randy G. Rath GIS Specialist Lake George Association - List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 8290
RE: MI-L buffer with Z
You can do this and other non-linear buffering requirements with MapCalc Learner or Professional. You can automatically insert the resulting MIG, contour line or boundary TAB, and/or cell centroid values into MapInfo Pro 6.+ by a single "send to" selection in MapCalc. Learn More A variable Z buffer example calculation with MapCalc can be read at: http://www.innovativegis.com/basis/Senarios/Roadbuff_scenario.htm In this case, a variable buffer is calculated for uphill terrain steepness as could be related to landslide issues. Same generalized method can be used around streams where a buffer needs to be established to protect stream banks. Steep landscapes need greater buffering than more level ones when the two banks are relatively different. FYI MidNight Mapper Aka neil http://www.redhensystems.com/products/mapcalc/default.asp?sm=27 -Original Message- From: Randy Rath [mailto:[EMAIL PROTECTED] Sent: Wednesday, September 03, 2003 9:12 AM To: mapinfo Subject: MI-L buffer with Z Hi all, I would like to buffer a stream network using local elevation or the slope distance. The MI buffer tool uses a (cartesian) horizontal radius (X,Y to X1,Y1 = 50m). The spherical selection does not use local elevation data. Has anyone used elevation or slope distance (X,Y,Z TO X1,Y1,Z1 = 50m) to create a buffer? I will most likely use the concentric ring buffer as I will have to create more than 1 buffer. Any advice would be great... Thanks... Randy G. Rath GIS Specialist Lake George Association - List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 8253
MI-L buffer with Z
Hi all, I would like to buffer a stream network using local elevation or the slope distance. The MI buffer tool uses a (cartesian) horizontal radius (X,Y to X1,Y1 = 50m). The spherical selection does not use local elevation data. Has anyone used elevation or slope distance (X,Y,Z TO X1,Y1,Z1 = 50m) to create a buffer? I will most likely use the concentric ring buffer as I will have to create more than 1 buffer. Any advice would be great... Thanks... Randy G. Rath GIS Specialist Lake George Association
