From AutoCAD to ArcView

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From AutoCAD to ArcView
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From AutoCAD to Arcview

• Purpose
• Display a site plan drawn in AutoCad on a view
  drawn in ArcView
• Given
• Campus site plan drawing based on an assumed
  origin with survey monuments
• ArcView view of the United States in geographic
  coordinates (degrees)
• Data sets of wetlands and aquifers in other
  coordinate systems

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From AutoCAD

• Given
• Campus plan with assumed coordinate system
• Units are in feet
• Property line survey monuments are shown in New
  York State plane coordinate system
• Monument 1
• Northing 1,129,290.14 Easting 761,886.75
• Monument 25
• Northing 1,133,064.73 Easting 758,358.74

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From AutoCAD

• Assumed
• Campus map was in 1927 state plane coordinates,
  New York west
• Monument northings and eastings are in feet

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From AutoCAD

• Procedure
• Use AutoCAD world coordinate system
• Because AutoCAD user coordinate system did not
  translate to ArcView
• Use AutoCAD move command
• to move all the drawing elements from assumed
  coordinates to northing and easting coordinates
• Use AutoCAD rotate command
• To align drawing to true north and south

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From AutoCAD

• Procedure (continued)
• Save AutoCAD drawing
• As Campus.DWG
• Create and save a world file for ArcView to use
  when creating a theme of the Campus map
• Open text editor (notepad.exe)
• Anticipate bringing the campus map into an
  ArcView view already projected to State Plane
  1927 New York,west

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From AutoCAD

• If the Campus map is on New York west and ArcView
  view is projected to New York west then the text
  file that coordinates between the two is
• 0,0 0,0
• This one line text file should be saved in the
  same folder as the AutoCAD drawing
• This file should have the same name as the
  AutoCAD drawing and a .wld extension
• In our example Campus.wld

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In general terms

• Select a point with known coordinates in both the
  AutoCAD drawing and the new shape file.
• The .WLD (world file) will tell Arcview which
  point to line up.
• The concept X1,Y1 X2,Y2
• The syntax X1,Y1 X2,Y2

State plane coordinates new Shape file
coordinates
space
AutoCAD coordinates
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Coordinate Transformation

• .WLD file holds the transformation information
• .WLD file is a text file
• .WLD file is in the same folder as the .DWG file
• .WLD file format is
• X,YltspacegtnewX,newY

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Example

• Locate the AutoCAD drawing of the campus of
  Monroe Community College in Monroe County, New
  York

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Monument 1
Monument 25
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from AutoCAD
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from AutoCAD

• Check assumed coordinate system origin

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from AutoCAD

• 0,0 is in the lower left corner of the map

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from AutoCAD

• Zoom in on monument 25 in lower left

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from AutoCAD

• Object snap helps to get right on the point

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from AutoCAD

• Use zoom extents to find the drawing after the
  move

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from AutoCAD

• Check coordinates to show move

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from AutoCAD

• Rotate using reference angle
• North straight up

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from AutoCAD

• Zoom in to monument 1 for reference angle end
  point

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• Pick monument 1 as second point of reference
  angle
• Type in coordinates of monument 1 as the new
  angle

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from AutoCAD

• Zoom extents to find drawing rotated to true
  north
• Save

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WARNING
For many ArcView users the most difficult aspect
of working with data in a GIS environment is the
concept of map projections.
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theme to geographic coordinates
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From AutoCAD to ArcView

• The AutoCAD drawing
• Is in state plane coordinates
• .wld file is in the same folder
• ArcView
• Placed in state plane projection
• Campus.dwg inported into ArcView view
• Campus saved as a theme
• Theme projected to geographic coordinates

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theme to geographic coordinates
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theme to geographic coordinates
Turn on extentions
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theme to geographic coordinates
For CAD Reader
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theme to geographic coordinates
And Projection Utility Wizard
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theme to geographic coordinates
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theme to geographic coordinates
Start a new view
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Theme to geographic coordinates
Add the drawing as a theme
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theme to geographic coordinates
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Save the theme

• As a shape file
• Convert the saved shape file
• From state plane coordinates
• To geographic coordinates

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theme to geographic coordinates

• Start the projection utility from the File on
  the menu bar

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theme to geographic coordinates

• Sometimes it is hard to remember where the shape
  file was saved

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theme to geographic coordinates

• Specify the state plane coordinates

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theme to geographic coordinates

• Yes to save the coordinate info

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theme to geographic coordinates

• For the new system, click the geographic radio
  button

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theme to geographic coordinates

• Select no

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theme to geographic coordinates

• Make a note of the file location
• Pick a better file name

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theme to geographic coordinates
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theme to geographic coordinates

• Display the new theme over top of the old theme

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theme to geographic coordinates

• Or the new theme can be added the regular way

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From AutoCAD to Arcview

• To demonstrate
• Display Arcview view of the counties of United
  States
• Add the campus theme

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ArcView

• Add theme of campus on geographic coordinates

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ArcView

• Select campus map in geographic coordinates

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Arcview

• Theme needs to be clicked on

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Arcview

• Campus in geographic coordinates
• Next add other themes in geographic coordinates

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Arcview

• Check the values of the geographic coordinates

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Arcview

• Add the quadrangle wetlands, NY state aquifers,
  50 states, and world themes

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Arcview

• Turn the themes on after reordering

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Arcview

• Campus theme should be on top

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Arcview

• The new world order

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Arcview

• Click the themes on
• Notice wetlands indicated on campus

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Arcview

• Use the zoom out button

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Arcview

• Aquifers
• Wetlands quad

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Arcview

• Zoom back

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Arcview

• Zoom back

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Arcview

• Zoom back

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Arcview

• Zoom back

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Arcview

• Change the coordinate system from geographic
  properties

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Arcview

• projection

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Arcview

• Change projections

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Arcview

• Scroll down

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Arcview

• Scroll down to the world from space

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Arcview

• Nice view, and it still contains the campus map

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Arcview

• Zoom way in

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Arcview

• And check the coordinaates

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Arcview

• Change units to feet

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Arcview

• And change coordinates to state plane 1927 New
  York, west

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Arcview

• Check coordinates
• Change units from meters to feet

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AutoCAD to ArcView

• Campus drawing in ArcView

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If none of this works....

• Check to see if you turned on the extensions

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The end