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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
What is a drawback to using some online features like Data Enrichment?
- Costs lots of credits to use certain functions, run analysis, store data, and upload data/pictures - Better features in the U.S.
26
What are credits?
- The 'currency' used to perform functions in Arc Online - Costs money - Some free credits per month to do basic functions
27
What is a potential solution to uploading pictures to Arc Online without having to use credits?
- Don't upload | - Use a URL to 'point' to the photo location on the web (flickr etc.)
28
Data Gatekeepers
- Control who has access to what data
29
What options are there for analyzing patterns in Arc Online?
- Similar to Geostatistical Analyst Toolbar in desktop - Density - Hot Spots (finding clusters and testing for statistical significance) - Interpolation
30
What options are there for Proximity tools in Arc Online?
- Buffers - Network Analyses - Find Nearest - Plan Routes - Create Drive-Time Areas - Connect Origins to Destinations
31
What options are there for Managing Data in Arc Online?
- Overlay - Identity - Merge - Dissolve - Queries - SQL - Extract
32
How does Extract work in Arc Online?
- 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
How does Overlay work in Arc Online? What skills are necessary for the user to know?
- Similar to Overlay toolbox in desktop - Intersect, Union, Erase - Need to understand topological overlay and SQL
34
Is an Intersect an And, Not, or Or?
And
35
Is a Union an And, Not, or Or?
Or
36
Is an Erase an And, Not, or Or?
Not
37
What is Collector for ArcGIS?
- 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
What are some issues with Collector for ArcGIS Online?
- Accuracy and Precision using a phone is only ~20-30m | - Devours power and data (use online and upload later to mitigate)
39
What are the next steps after data collection and analyses?
- Publishing and Sharing
40
What are options for Publishing results?
- Share the data - Export Data - Allow others to export - Web Apps
41
What are options for graphical representation of data with Arc Online?
- Story Maps - Scenes - Presentations - Web Apps
42
What are the steps to publish a story map?
- Select a story theme - Choose a template - Build story map - Share
43
What is a story map?
- 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
What are the 5 principles of effective story telling?
- Connect with the audience - Lure people - User experience supports the story - Easy to read maps - Strive for simplicity
45
How do you strive for simplicity with a story map?
- Remove non-essential elements | - Shorten text, People have short attention spans
46
What are some features of an easy to read story map?
- 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
What would a Story Map Series App be best used for?
- If audience needs to switch between different maps
48
What is a Story Map Tour best used for? Story Map Journal?
- Map Tour for short text captions | - Map Journal for longer text
49
How can you make the user experience support the story map?
- Choose an app/template that supports the experience you need to create for the story message
50
How can you lure people in to your story map?
- 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
How can you connect with your story map audience?
- Craft text, maps, and contents to suit audience - Avoid Jargon, use accessible language - Strive for clarity and simplicity
52
How can you publish a story map?
- Email link - Post link on web page - Share on Social Media - Embed or link directly to web page
53
What are the key elements of a Story Map?
- Text - Video - Photos - Spreadsheets - GIS Data - Basemaps - Queries - Popups for customized view and incorporating media - Interactive Use
54
What are Apps? What are some examples of Story Map Apps?
- Apps are ready-built templates for customization - Spyglass - Swipe - Tour - Journal - Series
55
What does the Story Map Spyglass App do?
- Focuses on revealing/magnifying one point at a time | - Can be good to show differences over time
56
What does the Story Map Swipe App do?
- 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
What are the 5 steps to making a scene?
- Choose Basemap - Add Layers - Configure Layers - Create Slides - Save Scene (To cloud or online environment)
58
Adding Scenes?
- Thumbnails - Adjust the extent - Keep adding different views - Keep communication in mind - Can have multiple scenes - Users can interact with the scenes
59
How do you choose between a global or a local scene?
- 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
Web map Presentations
- 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
Why use Web Apps?
- Communication - Can use cross devices - Customizations - Widgets - Can write own code or use templates
62
What is a widget?
- Bits of pre-written code for customization and Apps
63
What are the pros and cons for Web Apps on a mobile device?
- 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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