This week we had to digitize and edit large datasets. Honestly it was the hardest project I've done so far. It took me roughly two weeks to finish and a lot of advice from a fellow classmate and our professor. I ended up learning quite a bit including how to use SQL and query functions when creating a shapefile. It was a chore to read the old maps provided. Some of the landscape was skewed and I did have trouble finding a good topographic map. Below you will see the ancient Valley of Oaxaca which contains georeferenced and digitized information.
Process Summary:
1) Open ArcMap, added the national geographic topographic basemap. Found the Valley of Oaxaca.
2) Created jpgs for all necessary pictures in files provided including 1-3 4-1, appendix 1, 2, and 3. Cropped images and added for georeferencing.
3) Georeferenced Figure 1-3 and 4-1 by changing the transparency and adding control points.
4) Geo-referenced all images and saved as different group layers. 4-1 was easier to georeference due to the land cover depicted in the picture.
6) Created shapefiles for each required.
7) Exported and saved as jpeg
8) Created separate shapefile for the river, but ended up adding it do the land cover shapefile in order to not have so many maps.
3) Moved on to the collection units and digitized as polygons. This part was the hardest. I had trouble getting the collection site numbers to show up properly after using SQL and query options. Ended up having to convert labels to annotation and manually enter each site.
4) Site N2E3 was broken into three different pictures. This created a lot of overlapping, so I tried to place the site numbers as best as I could. In hind sight I would've preferred to create three separate shapefiles for each site. Cest’ la vie!
5) Digitized the land cover and created hatch lines.
6) Added all necessary map elements and exported.
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