Wednesday, October 6, 2010

Lab 6 part 2




Lab 6 part 1



1.  When you have a large-scale map it is east to see symbols because they are larger for the small area they map is covering.  When you change the map scale to a smaller scale the symbols become much smaller and they become hard to distinguish and appear closer together.  If you increase the size of the symbol they becomes less precise in terms of location.

2.  Two ways to access they symbol colors are when in symbol selection you can choose they color when inserting symbol or you can go to layer properties and change the color of the symbols with the color ramp.

3.  In the layer properties dialogue box go to quantities then click graduated symbols

4.  Some symbology styles are public signs style, HAZMAT style, industrial style, road sign style and animal style.  (lol if you like In-n-Out)

5.  In the save layer dialogue box you must save the layer symbology as a .lyr file.

6.  Pyramids help display raster data faster by changing the size of the pixels depending on how zoomed in or out you are.  When zoomed out the pixels are bigger or coarser.  If it stayed the same size it would take forever when changing resolution. 

7.  You can left click twice slowly on it in the TOC and type in a new name.

8.  Normalization is when you divide one attribute by another to get a ratio.  This is normally used for population density.

9.  The problem with a dot density map is if you use it to show population in a polygon it sets the dots randomly and if you change or have to redo it the dot will be placed in a different spot.

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