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GIS Applications Geog 329 > Online GIS > Flashcards

Online GIS Flashcards

1
Q

What are 2 things required for spatial analysis? How does the internet influence this?

A
  • Data and software

- Geospatial data is now increasingly available online

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2
Q

What are some examples of places to find geospatial data on the internet?

A
  • Internet GIS
  • Web Services
  • Government agencies (NRCan)
  • DMTI (Expensive, but good)
  • But online data can be poor quality
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3
Q

At the moment, what type of vector data is used to make an online map from a spreadsheet?

A
  • Point data
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4
Q

How does online mapping work? (Basic)

A
  • Data stored on central servers
  • Cloud-based
  • Users access the data and display and analysis tools through web browser (Don’t use Safari)
  • Don’t need a desktop copy to use
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5
Q

What are some examples of Interactive Atlases and virtual globes?

A
  • Google Earth, Nasa Worldwind, UVic’s Mortality Atlas
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6
Q

What are potential reasons for the advent of Online Mapping?

A
  • People want to access everything all the time (phones, portable computers, clouds, etc.)
  • New ways of communicating online
  • New ways to share data
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7
Q

While Interactive Atlases are powerful, what are they lacking?

A
  • The basic functionality of a GIS

- Ability to model with suitability, terrain analysis, network analysis, complex spatial statistics

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8
Q

What is Online GIS trying to accomplish?

A
  • Going beyond desktop

- Drive towards more interactivity and distribution of data/information

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9
Q

What is one of the main advantages to Online GIS over desktop?

A
  • Ability to share is a big power of online mapping
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10
Q

Can anyone use Online GIS?

A
  • It is more accessible but not everyone will know or understand how to use it
  • It still requires people with knowledge of how to operate GIS (desktop experience is helpful)
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11
Q

Which version of Arc could only connect to web services? Which version has it integrated right in the desktop?

A
  • 9.3 could connect

- 10.3 was integrated, more to the front

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12
Q

What are some examples of freeware (open source community) involved in online mapping? What is a major difference in the use for users vs. proprietary?

A
  • GRASS
  • Mapserver
  • OpenEV
  • PostGIS
  • Usually require more of the user than proprietary software
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13
Q

Describe a very basic outline of Online GIS

A
  • Server side: Map Services and Data services
  • Both interact with the web interface which interacts with users
  • Data services interact with data sources
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14
Q

What is one way that ArcGIS Explorer is bringing desktop to the online world and making it accessible for people?

A
  • ArcGIS Explorer is a free downloadable application
  • Easy way to access online GIS content and capabilities
  • Free! Removing financial barriers
  • Not necessarily easier to operate though
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15
Q

What are some potential issues with running Online GIS?

A
  • General errors
  • Network availability
  • Server functionality
  • Web layer issues
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16
Q

While Online mapping is democratizing GIS, what is a potential social issue?

A
  • Not everyone has access to the internet
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17
Q

ArcGIS Apps

A
  • Value added products
  • Tools to accomplish certain jobs
  • Options for field work, office, community, etc.
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18
Q

GIS for Everyone

A
  • Watch video
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19
Q

What part of ArcGIS Online is covered in 329?

A
  • Performing Analysis
  • Collector for ArcGIS
  • Story Maps
  • Presentations
  • Scenes
  • ArcGIS Web App builder steps
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20
Q

What makes Performing Analysis Online different from desktop?

A
  • Access
  • Intuitive
  • Doesn’t require quite as much GIL
  • Online ‘hand-holds’, desktop doesn’t
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21
Q

What market of users is Online currently designed for?

A
  • People who want to do basic stuff
  • Not hardcore geoprocessing
  • People without access to desktop
  • Intuitive and accessible to people with less experience with GIS
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22
Q

How can you find locations in Arc Online?

A
  • Attribute queries, can be built on like desktop
  • SQL
  • Boolean logic (and, or, if)
  • Viewsheds, Watersheds
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23
Q

What is the main difference between find locations and derive new locations in Arc Online?

A
  • Derive new locations can contain partial membership
  • When ‘intersects’ or ‘within a distance of’ is used, Derive new locations creates new feature sin the output result layer
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24
Q

What does ArcGIS Online data enrichment do? What is a drawback?

A
  • Supplements data and allows you to create custom data products
  • Access more data than you have onscreen
  • Infographics
  • Reports
  • More data
  • Demographics and Statistics
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25
Q

What is a drawback to using some online features like Data Enrichment?

A
  • Costs lots of credits to use certain functions, run analysis, store data, and upload data/pictures
  • Better features in the U.S.
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26
Q

What are credits?

A
  • The ‘currency’ used to perform functions in Arc Online
  • Costs money
  • Some free credits per month to do basic functions
27
Q

What is a potential solution to uploading pictures to Arc Online without having to use credits?

A
  • Don’t upload

- Use a URL to ‘point’ to the photo location on the web (flickr etc.)

28
Q

Data Gatekeepers

A
  • Control who has access to what data
29
Q

What options are there for analyzing patterns in Arc Online?

A
  • Similar to Geostatistical Analyst Toolbar in desktop
  • Density
  • Hot Spots (finding clusters and testing for statistical significance)
  • Interpolation
30
Q

What options are there for Proximity tools in Arc Online?

A
  • Buffers
  • Network Analyses
  • Find Nearest
  • Plan Routes
  • Create Drive-Time Areas
  • Connect Origins to Destinations
31
Q

What options are there for Managing Data in Arc Online?

A
  • Overlay
  • Identity
  • Merge
  • Dissolve
  • Queries
  • SQL
  • Extract
32
Q

How does Extract work in Arc Online?

A
  • Similar to a Clip in desktop
  • Choose layer to extract, Study area (select features or clip features), and output data format and file name
  • Output data format can be cvs, file geodatabase, KML, KMZ, Shapefile (most are in .zip format)
33
Q

How does Overlay work in Arc Online? What skills are necessary for the user to know?

A
  • Similar to Overlay toolbox in desktop
  • Intersect, Union, Erase
  • Need to understand topological overlay and SQL
34
Q

Is an Intersect an And, Not, or Or?

A

And

35
Q

Is a Union an And, Not, or Or?

A

Or

36
Q

Is an Erase an And, Not, or Or?

A

Not

37
Q

What is Collector for ArcGIS?

A
  • For collecting data in the field
  • Ground-Truthing
  • Can work offline
  • Collect Points, Lines, Polygons
  • Can use a smart phone
  • Can upload attributes, sent to ArcGIS Online account
  • Can take a georeferenced photo and link to position
38
Q

What are some issues with Collector for ArcGIS Online?

A
  • Accuracy and Precision using a phone is only ~20-30m

- Devours power and data (use online and upload later to mitigate)

39
Q

What are the next steps after data collection and analyses?

A
  • Publishing and Sharing
40
Q

What are options for Publishing results?

A
  • Share the data
  • Export Data
  • Allow others to export
  • Web Apps
41
Q

What are options for graphical representation of data with Arc Online?

A
  • Story Maps
  • Scenes
  • Presentations
  • Web Apps
42
Q

What are the steps to publish a story map?

A
  • Select a story theme
  • Choose a template
  • Build story map
  • Share
43
Q

What is a story map?

A
  • Tells the story of place, event, issue, trend or pattern in a geographic context
  • Story that provides data
  • Form of communication
  • Designed with non-technical people in mind
44
Q

What are the 5 principles of effective story telling?

A
  • Connect with the audience
  • Lure people
  • User experience supports the story
  • Easy to read maps
  • Strive for simplicity
45
Q

How do you strive for simplicity with a story map?

A
  • Remove non-essential elements

- Shorten text, People have short attention spans

46
Q

What are some features of an easy to read story map?

A
  • Simple, clear, user-friendly while still using cartography principles
  • Eliminate unnecessary detail
  • Choose appropriate baseman, simpler is usually better
  • Add custom pop-ups, legends and other features to deliver message
47
Q

What would a Story Map Series App be best used for?

A
  • If audience needs to switch between different maps
48
Q

What is a Story Map Tour best used for? Story Map Journal?

A
  • Map Tour for short text captions

- Map Journal for longer text

49
Q

How can you make the user experience support the story map?

A
  • Choose an app/template that supports the experience you need to create for the story message
50
Q

How can you lure people in to your story map?

A
  • Exciting, attractive image
  • Descriptive and catchy title
  • Tell where it is and what at the front with core concepts
  • Don’t include outbound hyperlinks in the intro
51
Q

How can you connect with your story map audience?

A
  • Craft text, maps, and contents to suit audience
  • Avoid Jargon, use accessible language
  • Strive for clarity and simplicity
52
Q

How can you publish a story map?

A
  • Email link
  • Post link on web page
  • Share on Social Media
  • Embed or link directly to web page
53
Q

What are the key elements of a Story Map?

A
  • Text
  • Video
  • Photos
  • Spreadsheets
  • GIS Data
  • Basemaps
  • Queries
  • Popups for customized view and incorporating media
  • Interactive Use
54
Q

What are Apps? What are some examples of Story Map Apps?

A
  • Apps are ready-built templates for customization
  • Spyglass
  • Swipe
  • Tour
  • Journal
  • Series
55
Q

What does the Story Map Spyglass App do?

A
  • Focuses on revealing/magnifying one point at a time

- Can be good to show differences over time

56
Q

What does the Story Map Swipe App do?

A
  • Uncovers an image underneath of the map with a swipe

- Can be used to show differences over time from modern to historical with a swipe

57
Q

What are the 5 steps to making a scene?

A
  • Choose Basemap
  • Add Layers
  • Configure Layers
  • Create Slides
  • Save Scene (To cloud or online environment)
58
Q

Adding Scenes?

A
  • Thumbnails
  • Adjust the extent
  • Keep adding different views
  • Keep communication in mind
  • Can have multiple scenes
  • Users can interact with the scenes
59
Q

How do you choose between a global or a local scene?

A
  • Global is best for phenomena that wrap around spherical surface of Earth
  • Global can also be used at the city or building site scale
  • Local projects terrain and layers on a planar surface rather than spherical
  • Local best for local or city scale
  • Local can be used to interact with subsurface 3D data
60
Q

Web map Presentations

A
  • Communication tool
  • Creates a presentation from slides and data
  • Can add timing to each slide
  • Click drop-down menu from Web Map and choose create presentation
61
Q

Why use Web Apps?

A
  • Communication
  • Can use cross devices
  • Customizations
  • Widgets
  • Can write own code or use templates
62
Q

What is a widget?

A
  • Bits of pre-written code for customization and Apps
63
Q

What are the pros and cons for Web Apps on a mobile device?

A
  • Pro: tactile approach with using on phone devices

- Con: Small screen-size on a phone device

GIS Applications Geog 329 (7 decks)

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