Working with Survey Data in ArcGIS

CVEN 2012 – GeomaticsUniversity of Colorado – Boulder

April 2006

Alyssa McCluskey

Topics Covered

• Benefits of integrating survey data and GIS data • Workflow for integrating survey and GIS data• Tools for loading survey data into a

geodatabase. • Managing survey data in ArcCatalog™• Computing and adjusting survey data in

ArcMap™• Editing geodatabase features.

Background

• Assume you have used a TPS instrument to perform a survey

• You have downloaded the data from the instrument to your computer

• You now want the ability to use the data in your GIS

ArcCatalog – Survey Analyst Extension

ArcCatalog – Survey Analyst Extension

Creating a Survey Dataset

Creating a Survey Dataset

Creating a Survey Dataset

Creating a Survey Dataset

Creating a Survey Dataset

Creating a Survey Dataset

Making a Feature Survey AwareSurvey-aware features can be linked to survey points without directly changing their position. This means you "track" the locations of survey-aware features as they are edited through the standard methods. They are linked to the survey points, so you can ultimately update their geometry to the survey point locations.

Non-survey-aware features can also be edited by digitizing so they snap to survey points; however, these features are not "aware" of the underlying survey points to which they are snapped.

Creating Survey Project

Creating Survey Project

Creating Survey Project

Creating Survey Project

Import Raw Data into Survey Project

Survey data is data you obtainedfrom the field with a TPS

Import Survey Data

This is your raw data from the field

Import Survey Data

You should know this from your survey

Import Survey Data

You should know this from your survey

Import Survey Data

Preview Survey Data

Points are survey pointsLines represent measurements

Editor and Survey Editor

Editor and Survey Editor

Bring Survey Project into ArcMap

Bring Survey Project into ArcMap

Symbology

Symbology

Create Sub-layer

Want to separate points with known and unknown coordinates

Create Sub-layer

Create Sub-layer

Create Sub-layer

Points with Unknown Coordinates

Points with Unknown Coordinates

Points with Unknown Coordinates

Points with Unknown Coordinates

Points with Unknown Coordinates

Points with Known Coordinates

Points with Known Coordinates

Control Points

Provisional Point

Compute Traverse

Start Editing

Set Snapping

Set Snapping

Set Snapping Tolerance

Set Snapping Tolerance

TPS Traverse Tool

TPS Traverse Tool - General

TPS Traverse Tool - Setup

Contains the instrument setup name. (The Fixed field is checked if this is the traverse start point.)

Shows other properties for that setup point

Shows the start point’s instrument location

Info about the TPS instrument

Series of Measurements

TPS Traverse Tool - Setup

TPS Traverse Tool - Setup

Click on each of your measurements

TPS Traverse Tool - Setup

TPS Traverse Tool - MeasurementInformation recorded by the survey instrument during the survey.

You imported this information

In this tab you can choose the traverse setup points to review the measurements that were made from them, and set or review measurement orientation information.

TPS Traverse Tool - MeasurementDifferent traverse computation methods

The Compass rule, also known as the Bowditch rule, distributes the closure error in the Northings and Eastings in proportion to the distance along all the courses, from the first point to each of the unadjusted coordinate locations.

The Transit rule assumes distances have no measurement error and distributes the error only through the directions and angles.

The Crandall method distributes the error in the distances only, assuming directions and angles have no measurement error.

TPS Traverse Tool - Compute

TPS Traverse Tool - Compute

Now we have computed points, but still need buildings

TPS Traverse Tool – Compute Again

TPS Traverse Tool - Compute

Now we have computed the buildings too.

Notice that the buildings and point don’t exactly match.

Establish a link between survey and building pts, move building and snap it to surveyed corner.

Fixing features to survey points

Fixing features to survey points

Use LINK toolClick on survey point, then feature corner

Fixing features to survey points

Red Diamonds indicateLinkage to survey points

Fixing features to survey points

Depends on the number of links you establish

Fixing features to survey points

Digitizing with Survey Data

when you digitize the new GIS feature it will be linked to the survey points

Digitizing with Survey Data

Click on survey

points

Digitizing with Survey Data

Completing Lab 3

• Skip the video

• Adjust the corners of the 2 remaining middle buildings, create a map of the area with 2 additional data views of the corrected buildings

• Email or print certificate of course completion

Saving/Printing Certificate

Saving/Printing Certificate

Save as pdf and email to me or print and turn in.