1. Symbology can be influenced by scale in a couple of ways, if you are using a map of large scale you may want to lable important details but if you use the same map on a small scale, those specific details will not matter as much because you are now viewing a much larger strech of land. On the other hand, if you are labeling a small scale map you will not need those labels if you zoom in to a specific location.
2. A layer's symbol color can be changed by clicking on the colored box that displays underneath the layer title on the TOC, or it can be changed by right clicking on the layer and selecting properties and then clicking on the symbology tab.
3. Graduaded symbols can be accessed by right clicking on the layer that you wish to modify and selecting properties, then you select the symbology tab. On the 'show' box to the left you select 'quantities' and then 'graduated symbols.'
4. 5 symbology styles:
a Environmental
b Caves
c Petrolium
d Survey
e Weather
5. You can save the symbology as a layer file and you must also save the data source it references.
6. According to Ormsby, pyramids are versions of a raster data set. They improve the drawing speed of a raster layer as you zoom in and out.
7. You can temporarily change a layer name by right clicking on it and renaming it.
8. Normalization: dividing one attribute by another to find the ratio between them.
9. Dot density maps can be misleading because dots are randomly paced on the map so they don't truly show where exactly the density is.
No comments:
Post a Comment