- Using ArcCatalog, copy the .jpg scan of the geomap with your number to your \\geodata\vol0\ (or P:\)...\GIS\labs folder (new folder right? lab2...no spaces!)
Using ArcCatalog's metadata tab ("Description"), examine the projection information for the DRG called "bv&glasgow24kdrgs.jpg" that you copied from the digitize folder
-- Note that the digital file is not the projection of the paper maps (polyconic, NAD1927 datum), but how the digital files are rectified.
Note: This is two USGS 7.5 map images collared and stitched together using called ERMapper, which we don't have anymore.
Using ArcCatalog create a new "file geodatabase" in your lab2 folder, by right clicking in the folder whitespace
and give it a good name.- Right click on the new database and choose Import/Feature Class(Single) to bring in the shapefile "map_tiles" from your digitize folder. (You may create a Feature Dataset and set the datum/projection to hold all of your data, first.... I don't know the advantages of this.....yet)
- Start ArcMap with a new blank document
VERY IMPORTANT : set the data frame projection to match that of the DRG (digital raster graphic) of the seamed topos before you add the data layer ( this pre-setting of the projection is necessary for setting the editing characteristics later). Set the coordinate system of the dataframe using the "coordinate system" tab. Click the "import" button in the dropdown by the globe
and read the coordinate system directly from the "bv&glasgow24kdrgs.jpg" file in your digitize folder.
- Save your ArcMap document, then add the layer "map_tiles" from your geodatabase and bv&glasgow24kdrgs.jpg from your digitize folder
Under the "list by selection" tab in the table of contents panel (at the top), uncheck the "map_tiles" layer.
That keeps you from accidentally selecting it and editing or moving it.
- Right click on the "map_tiles" layer and check "label features" and tile numbers will be displayed. Zoom in to an area that is centered on and a little bigger than the tile assigned to you.
- Bring in the .jpg scan of your part of the geologic map (it will warn you that it can't be projected, but we know that, it's just a scan without coordinates so far).
- Open the georeferencing toolbar (right click in the toolbar area). And open the ArcMap help window and find the help page on the toolbar. Keep that open.
Change the georeferencing target layer to be your scan (here shown as 10.jpg) and then fit this scan to the size of the current view using "Fit to Display" on the Georeferencing Toolbar. (the view below is from 9.3, but 10.2 is similar enough)
Make "control point" pairs (one set of coordinates will be in pixels on the image, and the second set of the pair will be the UTM coordinates where you want it to be) by clicking the control point button 
then click first on the image point of comparison (the green cross), then second on the topo map point (red cross) of comparison (shown below as the same intersection, with geo map transparent over the topo map). 
Move around to get points near the map corners and then fix the middle if necessary. CAUTION ! For an unknown reason, the rectification information can disappear. If you make a mistake, finish the collection of that data pair, open the table from the Georeferencing toolbar ("View Link Table") and delete the last point. DO NOT USE CTRL Z because this will remove your scan and all the data with it. As you collect points, open the table and save the file of points to your homework folder. Do this especially when you are finished with the rectification. This is also a good piece of metadata, and you should note the RMSE for your metadata (alt+PrintScreen). RMSE is given in the units of the destination for the transformation. Do you know what the cell size is of the topo map?
and read the coordinate system directly from the "bv&glasgow24kdrgs.jpg" file in your digitize folder.
That keeps you from accidentally selecting it and editing or moving it.
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