Lab 5

Today we are continuing the thrilling process of data processing.

After selecting the counties for Nevada and making a new layer I get to change the projection.

I played around with all of the different projection to see what  they looked like.  I settled on the USA contigious Albers Equal Area Conic USGS version.  I chose this one mainly because I liked the way it looked.  A lot of the different projections make it look like the top of Nevada was really narrow.  It just didn’t look right.

After joining tables the attribute table turned mu null fields with 10 9s in them to 1000000000.  Had to go back and change it to 9 9s as it requested.

MAKE SURE YOU HAVE YOUR FIELDS IN THE CORRECT ORDER WHEN CALCULATING!!!!!  I goofed and ended up with all my percentages VERY negative.  Had to go back and redo them the RIGHT way.

Over all it wasn’t to bad.

ArcGIS terms

Join Function –

1. Appending the fields of one table to those of another through an attribute or field common to both tables. A join is usually used to attach more attributes to the attribute table of a geographic layer.
   
2. Connecting two or more features from different sets of data so that they become a single feature.
   

Monitor Fire – what happens when you get REALLY frustrated.

Calculate/Field Calculator – lets you perform simple as well as advanced calculations on all or selected records. In addition, you can calculate area, length, perimeter, and other geometric properties on fields in attribute tables.