From Auto CAD to Arc View From Auto

From Auto. CAD to Arc. View

From Auto. CAD to Arcview Purpose n Display a site plan drawn in Auto. Cad on a view drawn in Arc. View Given n Campus site plan drawing based on an assumed origin with survey monuments Arc. View view of the United States in geographic coordinates (degrees) Data sets of wetlands and aquifers in other coordinate systems

From Auto. CAD Given: n n n Campus plan with assumed coordinate system Units are in feet Property line survey monuments are shown in New York State plane coordinate system w Monument 1 n Northing 1, 129, 290. 14 Easting 761, 886. 75 w Monument 25 n Northing 1, 133, 064. 73 Easting 758, 358. 74

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

From Auto. CAD Procedure n Use Auto. CAD world coordinate system w Because Auto. CAD user coordinate system did not translate to Arc. View n Use Auto. CAD “move command” w to move all the drawing elements from assumed coordinates to northing and easting coordinates n Use Auto. CAD “rotate command” w To align drawing to true north and south

From Auto. CAD Procedure (continued) n Save Auto. CAD drawing w As Campus. DWG n Create and save a “world file” for Arc. View to use when creating a theme of the Campus map w Open text editor (notepad. exe) w Anticipate bringing the campus map into an Arc. View view already projected to State Plane 1927 New York, west

From Auto. CAD n If the Campus map is on New York west and Arc. View view is projected to New York west then the text file that coordinates between the two is: w 0, 0 w This one line text file should be saved in the same folder as the Auto. CAD drawing w This file should have the same name as the Auto. CAD drawing and a. wld extension w In our example: Campus. wld

In general terms Select a point with known coordinates in both the Auto. CAD drawing and the new “shape file”. The. WLD (world file) will tell Arcview which point to line up. n n The concept: X 1, Y 1= X 2, Y 2 The syntax: X 1, Y 1 X 2, Y 2 Auto. CAD coordinates space State plane coordinates “new Shape file” coordinates

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: n X, Y<space>new. X, new. Y

Example Locate the Auto. CAD drawing of the campus of Monroe Community College in Monroe County, New York

from Auto. CAD

from Auto. CAD Check assumed coordinate system origin

from Auto. CAD 0, 0 is in the lower left corner of the map

from Auto. CAD Zoom in on monument 25 in lower left

from Auto. CAD Object snap helps to get right on the point

from Auto. CAD Use zoom extents to find the drawing after the move

from Auto. CAD Check coordinates to show move

from Auto. CAD Rotate using reference angle North straight up

from Auto. CAD 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 Auto. CAD Zoom extents to find drawing rotated to true north Save

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

theme to geographic coordinates

From Auto. CAD to Arc. View The Auto. CAD drawing n n Is in state plane coordinates. wld file is in the same folder Arc. View n n Placed in state plane projection Campus. dwg inported into Arc. View view Campus saved as a theme Theme projected to geographic coordinates

theme 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

theme to geographic coordinates Start a new view

Theme to geographic coordinates Add the drawing as a theme

theme to geographic coordinates

Save theme As a shape file Convert the saved shape file n n 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

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 Auto. CAD to Arcview To demonstrate n n Display Arcview of the counties of United States Add the campus theme

Arc. View Add theme of campus on geographic coordinates

Arc. View 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 themes on after reordering

Arcview Campus theme should be on top

Arcview The new world order

Arcview Click themes on n 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

Auto. CAD to Arc. View Campus drawing in Arc. View

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

The end