listserv must have scraped off the attachment From: Brian Webster Sent: Wednesday, August 02, 2017 11:32 AM To: af@afmug.com Subject: Re: [AFMUG] OT RM Question
For the record that data is derived from the National Land Cover Dataset (NLCD). That data is built using satellite and aerial data and classifies the ground clutter for each 30 meter square. Roger converted that data to a format similar to the SRTM file format so that Radio Mobile can read and use it. I have attached a Google Earth file that links to the National set if you want to just view the data and compare it to aerial images. As I recall the latest version had some issues due to the fact that there were a couple of extra land cover classes added and the conversion process from the old format does not always work out exactly as desired. Also keep in mind that due to the 30 meter square getting only one type of classification, it’s one or the other in a 30 meter square area where you could have both buildings and trees. In the urban clutter class this is pretty common. Radio Mobile does loss calculations for buildings only in that square and cannot account for a line of trees that do not make up the majority of the 30 meter square. Thank You, Brian Webster www.wirelessmapping.com www.Broadband-Mapping.com From: Af [mailto:af-boun...@afmug.com] On Behalf Of Chuck McCown Sent: Wednesday, August 02, 2017 11:56 AM To: af@afmug.com Subject: Re: [AFMUG] OT RM Question Perfect, thanks. From: Eric Muehleisen Sent: Wednesday, August 02, 2017 9:54 AM To: af@afmug.com Subject: Re: [AFMUG] OT RM Question In Mobile Radio under Internet Options. Land cover can be downloaded from the internet and saved locally. I have mine pointing to "Landcover - Site 2" which is http://www.ve2dbe.com/geodata/landcover/ On Wed, Aug 2, 2017 at 10:43 AM, Lewis Bergman <lewis.berg...@gmail.com> wrote: The last I remember getting data for something similar it came from NASA. This might be a place to start: https://data.giss.nasa.gov/landuse/ If you do a google for NASA land search you get a few thiings that might help. On Wed, Aug 2, 2017 at 10:17 AM Chuck McCown <ch...@wbmfg.com> wrote: But where does the data come from? Seems like Roger was giving it away one year at AnimalFarm. I probably got a disk but I doubt I could ever find it. From: Steve Jones Sent: Tuesday, August 01, 2017 6:07 PM To: af@afmug.com Subject: Re: [AFMUG] OT RM Question Thats an option you select and edit into that file. I think its all like 20 years old though on the clutter On Aug 1, 2017 5:11 PM, "Chuck McCown" <ch...@wbmfg.com> wrote: Where do you get land cover data for Radio Mobile?
