Intro to GiS Lab III - Cartography

The first map shows the country of Mexico divided by states. The population of each is represented by a shade of green in accordance with the legend.

The second map shows the urban areas, roads, railroads and major and primary rivers in central Mexico.

·          In order to modify the legend of the third map, I went into layer symbology for the mex_elevation layer by right clicking directly from the table of contents.  Afterwards, I selected “classified” and changed the amount of classes to 6. I selected from the list of color ramps, but had a problem with changing the elevations. I could not modify the values by right clicking or double clicking on them.

Examine the Metadata in ArcCatalog for the following files and fill out the table below: 

Layer	Data Type	Publication Information: Who Created The Data?	Time Period Data Is Relevant	Spatial Horizontal Coordinate System	Data Summary / Description
mex_rivers	Shapefile	N/A	2007, 2002	Degree (0.0174532925199433)	Mexico Rivers and Streams represent the major rivers and streams in Mexico.
mex_elev	File System Raster	N/A	N/A	Degree (0.0174532925199433)	Digital elevation model of Mexico.

If a certain piece of metadata is not available for one of the files, that cell will be labeled “N/A.” You are not required to find information for such cells.

Working data folder filepath:   e.g. S:\abc1\IntroGIS\Lab3

Working MXD(s):  e.g. S:\abc1\IntroGIS\Lab3\myMaps\Example1.mxd

Output folder filepath:  e.g. S:\abc1\IntroGIS\Lab3\mydata 

Data you’ve created:
(File path should be the same as Output folder, above. If not, be sure to include the new output folder. Always include the file name, type/extension, and a brief description) 

·        e.g. abc1_roadsclipEC.shp – all roads within Escambia county

·        e.g. abc1_majorstreets.shp – only major roads selection

·         

PART II: Lab Questions / Answers
Answer all questions and explain your answers!

Q1: How many columns and rows does the mex_elev raster have?

The max_elev raster has 3800 columns and 2180 rows.

Q2: Can you edit the properties or data type of an existing field?

Yes; TYPE, AUTHORITY, TOLL and KILOMETERS and be edited.

Q3: How many administrative divisions are selected?

31 separate administrative divisions have been selected.

Q4: Describe the difference between classified and stretched symbology schemes for raster datasets.

‘Classified’ symbology assigns specific colors to different values, where the ‘stretched’ is a spectrum of a single color.