For planning and exhibits, I can't remember ever filing a sealed plat or map with an ortho. There are usually a few glitches with any ortho photo that's not collected using high accuracy techniques. The bing maps and Google maps will prove that fairly quickly.
Fair enough. However, have you ever sealed a plat with an ortho?
For planning and exhibits, I can't remember ever filing a sealed plat or map with an ortho. There are usually a few glitches with any ortho photo that's not collected using high accuracy techniques. The bing maps and Google maps will prove that fairly quickly.
Fair enough. However, have you ever sealed a plat with an ortho?
Yes and no. I've certainly used orthos, digital quad sheets, digital GIS maps on sealed plats for location maps. But for data control or under a boundary or water plan,,,,,,don't think so.
I rarely use them on surveys, they require clarification, accuracy reference and method; which I don’t usually have. I often send a second pdf with the aerial turned on. I keep the ‘AERIAL’ layer in the dwg file to clients I know well. Duface clients will mess up the aerial, base something on it and blame the surveyor.
@firestix I love the NC lidar topo data. Honestly it is probably more accurate than doing a topo by hand, and I have checked it against hand topo's. I've used it before and it showed objects that I would normally ignore, like septic test pits on a residential lot.
As far as orthimagery, I use it quite a bit, but only for things like checks on what I've shot or picking up stuff like power poles, or the far side of rivers, etc. I have never sent it out as a deliverable though, although I would not have a problem doing so, I would just note where it came from and that I had no responsibility as to it's accuracy. I have done the same thing with the lidar topo data and just note where it came from.
I use NC's orthos and those that I create from my own UAS surveys. I've used NC's LiDAR to search for and find ancient road or cart beds too. NC's orthos are PLS certified so there's no problem digitizing from them as long as you clearly differentiate between surveyed areas and digitized areas.
I've sealed a few with an ortho background but it's usually in addition to the standard black and white plat.
I frequently use photos in the background for exhibits. When doing so, I typically fade the photo a bit so my line-work stands out. Definitely not for any recorded documents (at least in my neck of the woods).
Sometimes for my own use. I don’t often record plats with the image loaded. WV has a good library at WVU of up to date photos, state wide.
