RE: MI From XYZ to slope anaylsis
Yes Robert, Definately interested in ANUDEM for MI, anyone else? Thanks for your reply. Laith -Original Message- From: Robert Crossley [SMTP:[EMAIL PROTECTED]] Sent: Tuesday, 28 September 1999 15:42 To: 'Laith Wark' Subject:RE: MI From XYZ to slope anaylsis Yes and no. The quality of the slope analysis will be dependant on the quality of the terrain model (DTM). I am not sure about the product Relief, but the quality of the DTM's created by VM leaves a bit to be desired. When you use contours, the model looks more like steps than a landscape. The corresponding slope analysis is thus useless. Slope is the first derivative of elevation (i.e. the rate of change in elevation). If you go one derivative further, i.e. change in slope, the analysis is even more useless. Generally spot elevations would work better in VM than contours. I use a product called ANUDEM, that interprets the elevations and reintrprets tham to create a hydologically sound (their words) DTM. The slope analysis is much better. The only problem is that it works in arc grid format. I have half done an interface to it for MapInfo, that if enough people were interested, I could finish. The output goes nicely into VM, and then the slope analysis in VM is quite good. Robert. -Original Message- From: Laith Wark [SMTP:[EMAIL PROTECTED]] Sent: Tuesday, September 28, 1999 12:13 PM To: MapInfo List Serve (E-mail) Subject:MI From XYZ to slope anaylsis Friends, I have about 5000 spot elevations for an area which I need to generate a map depicting slope ranges. I am aware of packages such Vertical Mapper and Relief. My question is, are spot elvations (points with X,Y,Z coords) sufficient data format for these software packages to generate slope analysis? Or, in other words. I want to analyse slope. I've got X,Y,Z coords. Where do I go from here? Thanks in advance. = Laith Wark EDAW (Aust) P/L Design, Planning and Environments Worldwide Level 4 Rowes Building 235 Edward Street Brisbane 4000 Australia Ph: INT +61 (0)7 3229 6422 Fx: INT +61 (0)7 3229 6422 Email: [EMAIL PROTECTED] = -- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED] -- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
RE: MI From XYZ to slope anaylsis
Yes Robert, Definately interested in ANUDEM for MI, anyone else? What do you think it would cost? Thanks for your reply. Laith -Original Message- From: Robert Crossley [SMTP:[EMAIL PROTECTED]] Sent: Tuesday, 28 September 1999 15:42 To: 'Laith Wark' Subject:RE: MI From XYZ to slope anaylsis Yes and no. The quality of the slope analysis will be dependant on the quality of the terrain model (DTM). I am not sure about the product Relief, but the quality of the DTM's created by VM leaves a bit to be desired. When you use contours, the model looks more like steps than a landscape. The corresponding slope analysis is thus useless. Slope is the first derivative of elevation (i.e. the rate of change in elevation). If you go one derivative further, i.e. change in slope, the analysis is even more useless. Generally spot elevations would work better in VM than contours. I use a product called ANUDEM, that interprets the elevations and reintrprets tham to create a hydologically sound (their words) DTM. The slope analysis is much better. The only problem is that it works in arc grid format. I have half done an interface to it for MapInfo, that if enough people were interested, I could finish. The output goes nicely into VM, and then the slope analysis in VM is quite good. Robert. -Original Message- From: Laith Wark [SMTP:[EMAIL PROTECTED]] Sent: Tuesday, September 28, 1999 12:13 PM To: MapInfo List Serve (E-mail) Subject:MI From XYZ to slope anaylsis Friends, I have about 5000 spot elevations for an area which I need to generate a map depicting slope ranges. I am aware of packages such Vertical Mapper and Relief. My question is, are spot elvations (points with X,Y,Z coords) sufficient data format for these software packages to generate slope analysis? Or, in other words. I want to analyse slope. I've got X,Y,Z coords. Where do I go from here? Thanks in advance. = Laith Wark EDAW (Aust) P/L Design, Planning and Environments Worldwide Level 4 Rowes Building 235 Edward Street Brisbane 4000 Australia Ph: INT +61 (0)7 3229 6422 Fx: INT +61 (0)7 3229 6422 Email: [EMAIL PROTECTED] = -- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED] -- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
Recall: MI From XYZ to slope anaylsis
Laith Wark would like to recall the message, "MI From XYZ to slope anaylsis". -- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
Re: MI From XYZ to slope anaylsis
You might want to have a look at MFworks. It can be viewed at our website www.thinkspace.com . On our home page click on Products and then click on MFworks. A full up to date version can also be downloaded. Ron Taylor Education Consultant ThinkSpace Inc. -Original Message- From: Laith Wark [EMAIL PROTECTED] To: MapInfo List Serve (E-mail) [EMAIL PROTECTED] Date: Monday, September 27, 1999 8:31 PM Subject: MI From XYZ to slope anaylsis Friends, I have about 5000 spot elevations for an area which I need to generate a map depicting slope ranges. I am aware of packages such Vertical Mapper and Relief. My question is, are spot elvations (points with X,Y,Z coords) sufficient data format for these software packages to generate slope analysis? Or, in other words. I want to analyse slope. I've got X,Y,Z coords. Where do I go from here? Thanks in advance. = Laith Wark EDAW (Aust) P/L Design, Planning and Environments Worldwide Level 4 Rowes Building 235 Edward Street Brisbane 4000 Australia Ph: INT +61 (0)7 3229 6422 Fx: INT +61 (0)7 3229 6422 Email: [EMAIL PROTECTED] = -- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED] -- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
MI From XYZ to slope anaylsis
Friends, I have about 5000 spot elevations for an area which I need to generate a map depicting slope ranges. I am aware of packages such Vertical Mapper and Relief. My question is, are spot elvations (points with X,Y,Z coords) sufficient data format for these software packages to generate slope analysis? Or, in other words. I want to analyse slope. I've got X,Y,Z coords. Where do I go from here? Thanks in advance. = Laith Wark EDAW (Aust) P/L Design, Planning and Environments Worldwide Level 4 Rowes Building 235 Edward Street Brisbane 4000 Australia Ph: INT +61 (0)7 3229 6422 Fx: INT +61 (0)7 3229 6422 Email: [EMAIL PROTECTED] = -- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
