Questions tagged [land-survey]

The measurement of landscape features and their positions.

2
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0answers
21 views

Seeking method for determining survey points?

I'm trying to write software to create a topographic map, my goal is to select several points of interest and create a minimal mapping that is inclusive of the points and interpolates the topography. ...
1
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0answers
15 views

Details on Topcon theodolite data format (<3595959+3595959+****d094)

I am interfacing to a Topcon DT-102 (circa 1995) digital theodolite and wonder if anyone can help with the transmission format. It is perhaps shared with Sokkia or Leica/Wild. Background The unit ...
1
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0answers
16 views

Distance calibration between GNSS RTK receiver and display/processing device?

Are there any known procedures for calibrating a precise position of an external processing/display device (e.g. a smartphone or a tablet) relative to the GNSS receiver? Apparently, such a procedure ...
0
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0answers
33 views

Difference between a GNSS receiver and GNSS antenna

I´m relative new using GNSS data and I would like to understand a little more about the instruments that I´m planning to use in my future research. I was looking information on the UNAVCO website ...
1
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1answer
30 views

Mapping & digitizing geographic features freehand? [closed]

I´m working on a project to map a colleague´s farm, and then ultimately digitizing that information to produce maps and signage. To start, we´re focusing on a small agroforestry plantation. We want ...
0
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1answer
31 views

WPF: How to change the Map Point coordinate(lat/long) to screen point (x-y) on ArcGIS

My project required me to perform a close traverse to plotting by placing a marker on that particular point. My problem now is that the traverse calculation are in x-y plane, but to plot a point using ...
1
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1answer
64 views

Open Traverse Method for the map survey

I need to use traverse method in my program on visual studio(WPF) so that the user can get their target point coordinate by using their initial data. In my knowledge there is two type of traverse that ...
1
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1answer
45 views

Understanding CadNSDI versus GCDB PLSS datasets difference and accuracy?

I recently submitted some coordinates I acquired via ArcGIS to the BLM to go out into the field and pinpoint some locations. When I did the work at the computer I used ArcGIS and leveraged the BLM's ...
1
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2answers
656 views

Understanding the MUSYM field on SSURGO dataset?

What does the MUSYM field on the SSURGO data set mean? I have looked on the nrcs website have only found that it identifies soil. In the data set that I am looking at there are values like Ub and ...
2
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0answers
136 views

Adding land survey info to QGIS?

I am looking for help digitizing or adding info from survey plans into QGIS. In this example I'm trying to add the lease boundaries highlighted in yellow and the pipeline right of ways to the right ...
0
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0answers
33 views

Geolocating dataset of well pumps?

I have a dataset of well pumps, and I am trying to geolocate them. Each of the wells has as "Service Address" field, but instead of giving an address, it lists something that looks like this: "NW NE ...
2
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1answer
80 views

Hardware for Surveying and mapping total station

Is "Microsoft Windows CE 6.0 / Magnet Field" operating system the sole property of TOPCON total station or it can be found in other total stations as well?
2
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3answers
2k views

Why can't lines plotted on google maps suffice for legal determination of property boundaries?

If there is a way to calculate a maximum error in a line plotted on google maps (road map, or satellite view) , then that should be admissible in a court of law, shouldn't it ? For example, my deed ...
0
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1answer
326 views

How to map using more 'accurate' DATUM than WGS84? [closed]

WGS 84 is not very accurate as it is a compromise for the whole earth. Assuming theoretically I'm surveying using very accurate IMU and very accurate GPS (in WGS 84 of course). I think I'll get a ...
1
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1answer
454 views

DGPS post-processed Kinematic (PPK)

I did a dGPS survey last summer. Unfortunately, we didn't have a base station. So I did my survey in post-processed Kinematic PPK mode. Because we borrowed the equipment, we don't have access to post-...
0
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2answers
92 views

How to understand degrees in real estate

We are wanting to understand where the easement is on a 10 acre property we purchased. We don't really understand about tags for posting. This is the description: Ingress-egress easement for road ...
1
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1answer
88 views

Create Pseudo Drilling Spacing Units - Polygon inside another polygon from its boundaries

I am trying to create pseudo Drilling Spacing Units. That corresponded with the section, township and range that they are generated from. I am working with Sections from the Land grid in Oklahoma; ...
-3
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1answer
338 views

Latitude and longitude information of agricultural land [closed]

Is there a method by which I can get latlong details of agricultural land? Latlong information of 1 point in the land is not useful, as I want details of the entire agriculture boundary (from latlong ...
1
vote
1answer
429 views

How to show slope directon and angle [duplicate]

I need to create a map showing slope direction and dip angles in QGIS. How do I get either: the dip angle to show up next to the direction arrow or the dip arrow symbol to change depending on the ...
2
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0answers
76 views

Align approximately colocated vector points for comparison

I have a more general, methodological question and do not have much knowledge about GIS techniques. I have 6 topographic survey ([x,y,z] point clouds), each representing the same dune/beach system ...
2
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1answer
3k views

Convert Cassini-Soldner Projection coordinates from Kenya to UTM

I have a list of coordinates from Kenya. The coordinates were recorded in old survey maps using Cassini-Soldner Projection, with Clarke 1858 Datum. The approximate geographic coordinates (WGS84) of ...
3
votes
2answers
361 views

How do you delete Survey123 attachments from a survey?

There seems to be no documentation on how to delete Survey123 attachments. Is it actually feasible? Is deleting the complete feature layer record required/necessary? (and if so, how can one be sure ...
0
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1answer
80 views

Adding surveyed points to ArcMap?

I am using arcmap 10.2. How do i insert survey points that were collected in PNEZD format?
0
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2answers
300 views

Validation points for supervise classification

I have undertaken supervised classification (maximum likelihood) and planning to survey the ground to validate the output. How many validation points do I need to take? The raster is a landsat tile ...
3
votes
2answers
275 views

American FactFinder by ZIP code

I'm doing a research project that involves using demographic data collected from both the national Census and the American Community Surveys. I am interested in about 40 zip codes within NYC. The ...
-2
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1answer
76 views

Are all remote sensing landcover/use classifications without ground survey scientifically invalid? [closed]

It is on the need of accuracy assessment of classification product. Land cover/use classification is a prominent analysis in remote sensing. Now the question is if I generate a landcover from LANDSAT,...
3
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0answers
725 views

Using PLSS or BLM Boundaries in Oklahoma?

In Oklahoma should i be using the PLSS or BLM Boundaries I am struggling with: Which Surveying system to use in ArcGIS. The PLSS (Public Land Survey System) or the BLM (Bureau of Land Management) ...
2
votes
1answer
72 views

Establishing DGPS Connection With Old Equipment?

I am trying to do a differential surveying project with some outdated equipment, specifically: -An old AllegroCX personal handheld computer (Win 4.1) with SurvCE loaded on it to collect data and ...
6
votes
1answer
361 views

Using GIS to determine Average Land Distance From Equator?

How far away is the average piece of land on Earth from the equator? Put more precisely, what is the median absolute value of the latitude of landmass on Earth? From spherical geometry, the median ...
2
votes
0answers
28 views

Import polygon shapefile with SPCC Sections [closed]

I have a data set with records containing Township, Range and Section information but no X,Y coordinates. I would like to bring in the data to ArcGIS with each section as a polygon or a x,y point in ...
0
votes
1answer
315 views

Exporting Images Linked with Survey data, from a GPS to GIS format

We were setting up a workflow system, wherein we attach Survey images to our collected point data (Leica GPS). The same can be viewed in Software like Leica Geo office, but a GIS export of the files (...
7
votes
1answer
131 views

Why are heights given at various points on roads?

In the OS 1:25000 map below I have circled some numbers next to roads. The key says "Ground survey height" and there is another entry (in brown) for "Air survey height", but since all the data in the ...
5
votes
1answer
691 views

Can't generate true orthophoto from my software

I am a GIS specialist and a surveyor. Lately I'm trying to use as a surveying tool my DJI Phantom 3 pro combining with different software for generating DEM, DSM, 3d model and orthophoto. But I can't ...
1
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1answer
506 views

Bearing to X,Y, Z

I’m working on a small project where I’m testing the ability of a laser to accurately measure the angle of a wire. My control for the experiment gives me X,Y,Z coordinates for a point on the wire and ...
6
votes
4answers
1k views

Reaching cm (inch) level elevation precision using drones

A road construction firm needs altitude data of road path before and after the construction and the error should be less than 3 cm (2 inch). Normally, they put a ground station and workers manually ...
0
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1answer
44 views

What do the columns in this GIS file mean? Are they distances to 3 reference points?

I was handed this file and expected to know what to do with it. Does it possibly mean that point 1 is ~6539 ft from some marker and ~11370 from another marker? Are these types of file usually in ...
2
votes
1answer
712 views

How to Decipher an SDR File

I want to create a custom import routine that can read/import an sdr file. The sdr files will contain information the surveyor has picked up when completing an as-built. The data will likely contain ...
4
votes
1answer
87k views

Locating property corners using plat map description?

I am interested in a piece of property for which I have a plat map description, giving what seem to be latitudes/longitudes of lines along the boundaries (not sure about this). The objective is to ...
1
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0answers
4k views

How do I get the lat-long coordinate of point 1 from a survey plan [closed]

Here are the data from the survey plan: TIE LINES from BLLM No. 3, PLS 561, to corner "1" of: LOT ----------Bearing--------------------Distance Boundary ----S 36deg 41min W ------11,641.21 meters ...
1
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3answers
4k views

Using Plat Plotter - Calculate Curve Table feature given an arc and radius

Plat Plotter has a Calculate Curve Table feature that generates a sequence of points for use in drawing plot lines. To put another way, it converts a curve into several short, straight segments ...
2
votes
2answers
802 views

How to Convert Property Survey Monument Marker Coordinates to State Plane?

I have a set of Connecticut monument locations (a monumented property survey using monuments designated CGS Mon. No. 1577-1580). Their coordinates appear to me to be in meters (244536.84 N, 386409.67 ...
2
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0answers
222 views

Software that converts from legal description text?

Is there software that takes legal description text as input for conversion to some computer friendly GIS format? For example: Those portions of the North Half of the Southeast Quarter and the ...
5
votes
2answers
4k views

Can we create topographical map of private land using GPS elevation data?

Is there a way to create a relatively precise topographical map of a private land using GPS elevation data? As the land is a little bit over 100,000 square meters, the available regional topographical ...
2
votes
1answer
113 views

Can I capture shared vertices with a Trimble GPS?

I'm trying to figure out how to use Trimble GeoXT and GeoXH GPS receivers to efficiently capture small farm fields in rural areas. The main issue that I'm struggling with now is trying to deal with ...
1
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0answers
372 views

What are the top 5 file types for 3D model?

I don't know much about GIS but I'm investigating a project that requires a 3D model of a hilly large town (town centre, suburbs, golfcourse, etc.). I'm not certain which file-type of these ...
3
votes
3answers
3k views

Plot Canadian (Alberta Province) township, range, and section data on Google Maps

We are working on a project where we need to plot some part of Canada (Alberta) over Google Maps. We can plot maps on Google with coordinates (lat/long) or geometry values. But our client provided us ...
0
votes
1answer
741 views

Basis of Bearing in ArcGIS Parcel Fabric

Can someone explain how to handle a basis of bearing (a rotation factor for an entire parcel fabric) in an ArcGIS (10.2/10.3) parcel fabric? I have a set of parcels at the edge of an SPCS zone, so ...
1
vote
2answers
197 views

Creating points from an Annexation Ordinance description [duplicate]

I would like to be able to draw points in ArcMap using information provided by an Annexation Ordinance. I use ArcMap 10.3 with a Basic License Not having much experience in working with documents ...
4
votes
3answers
3k views

How to Generate Points on Corner of Polygon Only

I have a polygon layer made up of grid cells, illustrating a survey system: I'm trying to create a point on each corner of the polygon. I've used a geoprocessing tool called "Feature Vertices to ...
1
vote
0answers
462 views

Computing Shannon-Weiner biodiversity index using QGIS? [closed]

I wonder if anybody has some experience in calculating biodiversity index (such as Shannon-Weiner) using QGIS? I am also interested for similar experiences using R scripts within QGIS. The analysis ...