first time user with creating a simple yet effective workspace
TRANSCRIPT
First Time User -
Creating a Simple yet
Effective Workspace
Kenric McCay
City of Oak Ridge
About Me
• With the City of Oak Ridge (TN) Electric Department
• FME user for ~1 year
• B.A., M.S. in Geography from the University of Tennessee
• How did I first hear about about FME?
City of Oak Ridge
Status
1. Currently use AutoCAD for electric distribution.
2. Recently started to convert CAD data to GIS.
How to Import CAD
into GIS?
1. Decide what layer to import.2. Save .dwg with only this layer.3. Open ArcCatalog and navigate to .dwg.4. Change to appropriate coordinate system.5. Import into GIS.
Import CAD into GIS
Overview
1. Decide what layer to import.
You want each layer to be a separate layer within GIS.
Is it point, line, or polygon?
Import CAD into GIS
Overview
2. Save .dwg with only this layer.
After cleaning the .dwg, save it to only have
your working layer.
Import CAD into GIS
Overview
3. Open ArcCatalog and navigate to .dwg.
Import CAD into GIS
Overview
4. Change to appropriate coordinate system.
One way to do this is to right click the .dwg and navigate to properties. (Your .dwg may not be in the same coordinate system as your GIS.)
Import CAD into GIS
Overview 5. Import into GIS.
Choose the appropriate point, line, or polygon category. Then, drag it into your GIS.
Problem Overview
• Need to import CAD data to GIS
• Anchors were one layer to import, but they were individual line segments.
• Total 10,607 segments
• Goal was to merge these segments to form anchors as well as create a workbench for future instances.
Why Not Just Import
the Layer from CAD?
• I did, but it does not solve the problem.• Also, great way to use FME since we just acquired it.
This is how many of our anchors are
drawn within AutoCAD.
GIS Example of
Anchors
Two line segments within the attribute table.
FME Overview
Importing Process
• Create Bufferer, Dissolver, and Counter transformers.
• After counter, use SpatialFilter for pass/fail.
• Then, use the Aggregator transformer.
• Finally, export as a shapefile.
Transformers Purpose
• Counter – add numeric attribute to features
• SpatialFilter – filter the features with Pass/Fail (send counter features to the Filter port and send the original features to the Candidate port
• Aggregator – combine features from the Group By attribute
• Bufferer – expand
feature segments
• Dissolver – dissolves area (creating larger areas from common boundaries)
FME Process – Close Up1.
2. 3.
Parameters
Parameters Continued
Before / After Results
within FME
Selected features are separated
(10,607 line segments).Selected features are now joined
(4,641 anchors).
Was the Goal
Successful?
YES!!! How so?
• I merged the segments together.
• I have a workbench for similar tasks that I can adjust.
• I learned more about FME as well as the resources.
Resources
• Online Knowledge Center forum (https://knowledge.safe.com/)
• Webinars (http://www.safe.com/webinar/)
• Online Training (https://www.safe.com/training/)
• Transformer Gallery
