microstation dgn: how to integrate cad and gis

Problem

Data screenshotConvert CAD drawing characteristics to GIS

Photo: @cdharrison via Flickr

Dale’s snap demo

CAD - GIS lego bricks on all the respective demos (and on the agenda)

Photo: kennymatic via Flickr

CAD vs. GIS

CAD GIS

Layers/Levels Complex data structure

No or limited user attributes User attributes

Visual attributes Limited or no visual attributes

Annotations

Coordinate Systems

Photo: mac_filko via Flickr

CAD to GIS: Parcels and Blocks: source data

Problems:● Parcel/block boundaries Parcel/block polygons● Parcel/block numbers as text features Parcel/block numbers as user attributes

CAD to GIS: Parcels and Blocks: workspace

CAD to GIS: Parcels and Blocks: output

Photo: Will Merydith via Flickr

Photo: pasukaru76 via Flickr

Photo: DidWee via Flickr

Photo: DidWee via Flickr

CAD to GIS: Topo Map: source data

Problems:Elevation points:

● 2D● circles● elevation as text not linked to

the pointElevation lines:

● gaps● elevation as text not linked to

the lineOther features:

● all on the same level● cell names and linestyle

names for classification● need to meet spec

requirements (e.g. coded domain)

CAD to GIS: Topo Map: elevation points

Elevation points:● 2D● circles● elevation as text not linked to

the point

CAD to GIS: Topo Map: elevation lines

Elevation lines:● gaps● elevation as text not linked to

the line

CAD to GIS: Topo Map: feature classification

Other features:● all on the same level● cell names and linestyle

names for classification● need to meet spec

requirements (e.g. coded domain)

DEMO 4Source DataProblem = Representing GIS data in CAD

Data in ArcMap

DEMO 4The process in reverse: GIS to CADConverting a Shape dataset of parks to MicroStationSolution: Uses cells, tags, and text

Maybe a picture of a lego dog?

Demo 5Source DataA blend of MicroStation and Lidar datasets

Demo 53D BuildingsA blend of MicroStation and Lidar datasetsSolution: Overlaying building footprints on lidar and extruding data. Writing to many formats

Maybe a picture of a lego skyscraper?

Photo: avrene via Flickr