From AutoCAD to ArcView

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

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, Easting 761,  Monument 25 Northing 1,133, Easting 758,358.74

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

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

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

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

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: X 1,Y 1 = X 2,Y 2 The syntax: X 1,Y 1 X 2,Y 2 AutoCAD coordinates State plane coordinates “new Shape file” coordinates space

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,Y newX,newY

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

from AutoCAD

Check assumed coordinate system origin

from AutoCAD 0,0 is in the lower left corner of the map

from AutoCAD Zoom in on monument 25 in lower left

from AutoCAD Object snap helps to get right on the point

from AutoCAD Use zoom extents to find the drawing after the move

from AutoCAD Check coordinates to show move

from AutoCAD Rotate using reference angle North straight up

from AutoCAD Zoom in to monument 1 for reference angle end point

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

from AutoCAD Zoom extents to find drawing rotated to true north Save

WARNING For many ArcView users the most difficult aspect of working with data in a GIS environment is the concept of map projections.

theme to geographic coordinates

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

theme to geographic coordinates

Turn on extentions

theme to geographic coordinates For CAD Reader

theme to geographic coordinates And Projection Utility Wizard

theme to geographic coordinates

Start a new view

Theme to geographic coordinates Add the drawing as a theme

theme to geographic coordinates

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

theme to geographic coordinates Start the projection utility from the “File” on the menu bar

theme to geographic coordinates Sometimes it is hard to remember where the shape file was saved

theme to geographic coordinates Specify the state plane coordinates

theme to geographic coordinates Yes to save the coordinate info

theme to geographic coordinates For the new system, click the geographic radio button

theme to geographic coordinates Select no

theme to geographic coordinates Make a note of the file location Pick a better file name

theme to geographic coordinates

Display the new theme over top of the old theme

theme to geographic coordinates Or the new theme can be added the regular way

From AutoCAD to Arcview To demonstrate Display Arcview view of the counties of United States Add the campus theme

ArcView Add theme of campus on geographic coordinates

ArcView Select campus map in geographic coordinates

Arcview Theme needs to be clicked on

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

Arcview Check the values of the geographic coordinates

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

Arcview Turn the themes on after reordering

Arcview Campus theme should be on top

Arcview The new world order

Arcview Click the themes on Notice wetlands indicated on campus

Arcview Use the zoom out button

Arcview Aquifers Wetlands quad

Arcview Zoom back

Arcview Zoom back

Arcview Zoom back

Arcview Zoom back

Arcview Change the coordinate system from geographic properties

Arcview projection

Arcview Change projections

Arcview Scroll down

Arcview Scroll down to the world from space

Arcview Nice view, and it still contains the campus map

Arcview Zoom way in

Arcview And check the coordinaates

Arcview Change units to feet

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

Arcview Check coordinates Change units from meters to feet

AutoCAD to ArcView Campus drawing in ArcView

If none of this works.... Check to see if you turned on the extensions

The end