Problems
 Last problem was 0480 (HELP)

Q261. Explain these acronyms: DMS, EPSG, CRS

Q262. Explain the difference between equal interval, quantile, natural break, and standard deviation as classification methods If your data looked like this, and you have 5 class intervals, what would they be if you used each method?

Q263. Explain/illustrate the idea of 1+1=3.

Q264. What is a datum?

Q265. Identify graphical elements of a map: border, legend, scalebar, north arrow, author, date, projection, coordinates, data source, data date, title, body of map

Q266. What is interpolation and how do heat maps work?

Q267. What is a csvt file and why is it useful?

Q268. Projections: explain the terms cylindrical, conical, azimuthal, conformal, equal-area in conjunction with map projections and coordinate systems

Q269. Explain longitude, latitude, parallels, meridians

Q270. Describe and give examples of different types of maps: topographic, thematic, schematic, choropleth, isopleth, political, mental, Digital Elevation Model (DEM), political, physical, topographic, cadastral, climate, road, nautical charts, bathymetric chart, aeronautical chart

Q271. With reference to cartography, explain what we mean by scale, resolution, simplification/abstraction, representation, point, line, area, volume

Q272. Explain/illustrate what these geoprocessing operations do: clip, intersection, union, difference, buffer, convex hull, symmetric difference.

Q273. What kind of map is this:

Q274. Fill in the names of the "districts" in Oakland.

Q275. What do the four digit numbers on this map of the Laurel District most likely represent?

Q276. Go to OpenStreetMap.org and edit a building structure in the neighborhood around Mills.

Q277. Explain these acronyms: CSV, UTM, JPEG

Q278. Explain these acronyms: PNG, TIF, geoTIF

Q279. Explain these acronyms: SQL, WMS, WGS84

Q281. Explain these acronyms: AAG, ABAG, BART

Q282. Explain these acronyms: USGS, NOAA, NASA

Q282. Explain these acronyms: BG, CT, XML, CRAP

Q284. What are "map tiles"? Where do we encounter them? How do they work?

Q285. Name a few suppliers of map tiles.

Q286. When using Leaflet to create a webmap, we use code like this:

``````var cloudmade = L.tileLayer('http://{s}.tile.cloudmade.com/{key}/{styleId}/256/{z}/{x}/{y}.png', {
key: 'BC9A493B41014CAABB98F0471D759707',
styleId: 22677
})``````

to create the "attribution" on the map. What does this refer to? Why do we need to do it?

Q287. Download this zip file, open the QGIS workspace inside, produce a map that looks like this:

and post it to a wiki page.

Q288. How would you estimate the number of people who live within 500 meters of MacArthur Blvd in Oakland?

Q289. What map is this and what is it "famous" for?

Q290. What kind of map is this and what is it used for?

Q291. What do we call this kind of map?

Q292. Name these California counties.

Q293. Identify the counties in the greater Bay Area.

Q294. Identify the counties in this band across northern California

Q295. Locate these prominent California geographic features:

 Cascade Mountains Coastal Mountains Colorado River Kalamath Mountains Mojave Desert Sacramento River Sacramento Valley San Joaquin Valley San Joaquin River Sierra Nevada Mountains

Q296. (1) Read this thematic map. (2) Offer a critique of its graphic design.

Q297. With reference to the figures below, describe what the California State Plane System is.

Q298. Explain what's going on in this apparently distorted map

Q299. What is the California CRS zone for Oakland and the Bay Area? What units is it in? What datum is it based on?

Q300. You have been hired as a consultant to estimate the effects of a new criminal offender registry law that prohibits individuals on the registry from living within 1000 meters of a school. You are asked to

• Make a map showing all areas that are off-limits to registered offenders
• Calculate about how much of the city's rental market is off-limits to registered offenders based on this law.

You have

• a point layer with school locations
• a street layer
• a census blockgroup layer with information on number of rental units (or at least renter occupied units as of the last census)

Q301. Explain what we mean by "taxi-cab distance."

Q302. What is the significance of this map? What does it show? Who made it? When was it made?

Q303. Show, in QGIS, how to select features individually and by radius, rectangle, etc.

Q304. Open and explain attribute table. What are rows, what are columns? What do the controls along the bottom do? How do you sort rows? Change column width? Show only selected records? Select one or two rows and then reverse the selection.

Q305. Open properties dialog for a vector layer and explain briefly what the Styles, Labels, Fields, Metadata, and Joins tabs are for.

Q306. Create custom labels based on two fields for a polygon layer.

Q307. Find a color scheme using ColorBrewer and implement it on a polygon layer in QGIS.

Q308. Take a basic thematic map of Oakland, set up a print composer, and add graticule and customize annotations.

Q309. Demonstrate that you know you way around the Print Composer.

Q310. Show you know your way around the Georeferencer plugin in QGIS.

Q311. Show that you know your way around how QGIS lets you create a new vector layer of polygons, points, or lines.

Q312. Join a csv data file to a vector shape file.

Q313. Create a point layer by importing a CSV file containing geographic coordinates.

Q314. Show how to set snapping options to make vertex matching while drawing polygons by hand easier.

Q315. Identify and describe. What does it show? Who made it? When was it made?

Q316. What is Tissot's Indicatrix and what is it used for?

Q317. Match the name with the projection.
 South Polar Azimuthal | Mercator | Albers Equal Area Conic | Mollweide | Lambert Conformal Conic | North Polar Azimuthal

Q318. What does the indicatrix on this Fuller projection or "Dymaxion" map tell you about this projection (which projects the globe onto an icosohedron and then unfolds the solid figure)?

Q319. What does the indicatrix tell us about the Mollweide projection? Specifically, what do the red and black "12 o'clock" and "3 o'clock" lines mean?

Q320. Explain this diagram: