ePermit Boundary Shapefile Submittal Support Training Series. Shapefile Creation in ArcGIS. Making the Boundary Shapefile from an AutoCAD DWG. The Basic Workflow. There are several different workflows that can be used.
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Making the Boundary Shapefile from an AutoCAD DWG
Source CAD Drawing
Boundaries Only DWG
Save Down or Export
Attach to GIS Map
Table of Contents (TOC)
Map Display Area
(2)Select the Empty DMP Shapefile to add First
Doing this sets your coordinate system. If you add the DWG first, the coordinate system might not set.
We don’t want the whole DWG, just the polygons.
Select the “Polygon” element and click the “Add” button to add it to the TOC
(2) From this menu left click on “Zoom to Layer” and your data should appear.
(2) With the symbology expanded you see that your layer is currently set to solid-green (in this example)
We need to change this to “Hollow” so we can see all our data.
(1) Click on the Expand box to see the layer symbology
The color of the boundaries may be different on your display – it doesn’t matter.
Also, you may not see some of the features, such as impoundments or roads, because they are beneath other boundaries that are solid filled, such as the proposed permit boundary. This is caused by the order in which the elements were originally digitized and does not matter.
Change your solid fill color to “Hollow” so that you can “look through” stacked features and see all of your data.
To do this double-click on the color box under the polygon element class in the TOC.
Double-click on this box
(1) Click this one “Hollow”
(2) Then Click “OK”
Note: ArcMap assigns symbology to attached layers at random – that means that it might just come up in “Hollow” to begin with, and you won’t even have to do this step!
(2) Next click on the “Properties” option at the bottom.
(1) Right-Click on “Layer” at the top of the TOC to highlight it and see the drop-down context menu.
list of files to be merged
And that it’s table fields go into this list. Note that these are exactly the fields called for in the specification.
Notice that the 30 AutoCAD fields have been added to the Field Map section below the required shapefile fields. We don’t want these and we need to delete them out of the list so that they do not merge into our shapefile and create more work for us.
(2) Then click the delete button in the panel to the right of the field list.
The field will delete and one beneath it will become highlighted. So you should only have to click the delete button until the unwanted fields are all gone. Because we added the Empty DMP Shapefile first, and its fields are on top, this task is made easier.
This Output Dataset box will always have something it in, but it will never be named what you want, so will always have to change this value before you merge.
Permit Number, Action, and Action number (if Applicable) – use only underbars and no spaces.
Make sure the directory exists or you could get an error icon.
Just close the box when finished.
Time to clean up the project a little.
Right-click on the polygon and Empty DMP Shapefile layers and select “Remove” from the context menu that appears.
This doesn’t delete the files, just removes them from the TOC.
On the top menu bar, click on View
Right-click on the layer and select “Open Attribute Table” from the context menu.
If you have dual monitors, it’s easier if you drag the attribute table into the other monitor.
Fields = Columns
(2) Click on Start Editing. If you only have the one layer attached to the TOC, the editor will immediately open your shapefile for edit.
(1) Click on the “Editor” drop-down box to see the context menu.
In this example we will auto-populate the value “8380005” into ALL of the records for the PermitNO field.
Click in the Field Name box to highlight all the record values for that field.
(2) Click on “Field Calculator” to bring up the dialog box.
So all we have to do is give it the value. Since it is a text field (they all are) we should enclose our value in double quotation marks
With that done, just click the OK button to populate your records.
This is the fastest way to do this kind of edit, and because you didn’t have to type each value in, the odds of making a typo error are greatly reduced. In this case the values are either all right or all wrong.
(2) Then see what highlights on the map.
This happens to be a Current Approved Boundary Area
(1) Click the box area to the right of the record to select it.
Remember to refer to the specifications for a list of approved values.
Approved Boundary features do not get a SMISCode value according to the spec. Just leave it blank.
(1) Using the Select Tool…
The 2 records will highlight in the attribute table indicating they are selected..
(2) Then click on the Merge command.
Notice in this example that the total number of records went from 28 to 27 after the merge.
If I can merge all the permit boundaries together and just have to attribute a single record for them, why can’t I merge all of my impoundments, haul roads and other like features together the same way?
Because the attributes for FeatCLS and SMISCode could be different for each case of the remaining features. The SMISCode values will never be the same. Haul roads have the same blank FeatCLS value but the SMISCode will be different. Impoundments may have different FeatCLS values as well as different SMISCodes. These are not good candidates for merging and have to be populated one by one.
(1) Select the record in the attribute table
(2) See what kind of feature gets highlighted on the map
(3) Click on the selected field and type in the value.
(4) Repeat until all records are populated. Refer to the specification for approved field values.
Highlighted embankment pond
(1) Just click on the drop-down button for the Editor
(2) Then click on “Stop Editing”
Click “Yes” to save all of your edits, or “No” to completely roll back all your edits to the last save. So if you haven’t saved at all, and you click “No”, no changes to the attribute table will be saved..
Call or Email
Jeffrey Laird or Daryl Hines at the Division of Mine Permits
You can email me the shapefile and/or DWG you are working on. Make sure that you have a phone by your workstation. Then we can work through it together both looking at the same shapefile.