Hi
I am a Licensed Surveyor and also teach Surveying at a local Technical college. Currently I am teaching our second year Students Road Design. We use 12d. I was wondering if anyone had some datasets (either 3d .dwg, 3d .dxf or ascii files) that they would be willing to share so that our Students could use to practice some road designs. I have plenty of Surveys but are typically limited to corridors that are several kms long but only 30m. I would be looking for data over entire paddocks (the more the better) so that the Students can create several different designs instead of being limited to a single corridor.
thanks
Matt
LiDAR data sets could be the perfect option for you. Perhaps somebody else can point you towards some free LiDAR data sets for your road design class.
Hi Kevin
LiDAR would be perfect. If anyone knows of any publicly avaliable that would be appreciated. I'm not fussed if it's local. I can transform to local coordinates.
mattb, post: 360371, member: 8629 wrote: Hi Kevin
LiDAR would be perfect. If anyone knows of any publicly avaliable that would be appreciated. I'm not fussed if it's local. I can transform to local coordinates.
North Carolina has most of the state covered, the data sets can be found here:
Hi ekillo
Thanks for that. I'll be sure to have a look.
Regards
Matt
Matt,
If you'd like some exotic data, here's Slovenian LiDAR:
http://gis.arso.gov.si/evode/profile.aspx?id=atlas_voda_Lidar@Arso
The data is arranged in 1 KM squares.
The OTR data is Ground Only Point Cloud (LAS).
The GKOT data is ALL Classifications Point Cloud. (LAS, Big file)
The ASCII file is a Semi-Colon Delimited Point File.
Dave
Hi Dave
Thankyou very much for that. The more datasets they have to play with the better!
ARKANSAS - The Natural State
http://gis.arkansas.gov/repository/repository.php?rep=geostor-elevation
Check out Pulaski County. Many types of landforms.
Download Pulaski_County/Metadata/Project_Reports/Project_Narrative/Pulaski County Final QA Report_093010.pdf for certification by an Arkansas Professional Surveyor per:
A.C.A. å¤ 17-48-101 (6) "Surveying measurement certification" means providing the professional service of certification or sealing of maps, documents, digital files, or other data to verify that the maps, documents, digital files, or other data are authoritative professional determinations based on accepted methods and principles of surveying measurement or analysis representing or listing the following types of surveying measurements:
(A) The configuration or contour of the earth's surface or the position of fixed objects on the earth's surface;
(B) The position or elevation of a survey boundary, control monument, or reference point; and
(C) The alignment or elevation of a fixed work embraced within the practice of professional engineering.
http://gis.arkansas.gov/repository/repository.php?rep=geostor-imagery
Pulaski County also has 2015 High resolution aerial photography. This makes a nice exhibit when draped over the LiDAR terrain model.
Woooooo PIG Sooooieeee...RAZORBACKS
DDSM:beer:
USGS Earth Explorer
Hi Dan and Phil
Thanks also for the fantastic links. I'll have a busy weekend looking through all this data available. The students will benefit from this.
You know, if you find a data set for a nearby area... ground truthing (by field survey) the LiDAR data would be a good exercise for the students as well.
Hi Kevin
Or perhaps i can get a dataset from somewhere in Paris and try and justify to the school why i need to go over to ground truth it.
mattb, post: 369114, member: 8629 wrote: Hi Kevin
Or perhaps i can get a dataset from somewhere in Paris and try and justify to the school why i need to go over to ground truth it.
I hope your sarcasm is geared towards humor. If so, I can appreciate the humor. A field trip to Paris would likely be fun, but unwarranted.
On a serious note, justifying the ground truthing of a LiDAR data set is a very practical exercise. I fear that with the easy availability of LiDAR data for many projects designers may skip ground truthing to expedite the design process. If there are problems with the data, this could be a very expensive mistake.
I understand you will have constraints in your endeavors. In the opinion of this professional, the topic should at least be discussed; if it can't be included in the curriculum.
Hi Kevin
Yes, very much humor.
I agree with checking data. All too much here students start out taking results for granted. GNSS is a classic example. We spend a lot of effort reinforcing to them the need for checks and questioning.
