layout:true <div class="header" style="display:block; text-align: left; color:gray; font-size:1em; position: fixed; top: 0px; left: 0px; height: 30px;vertical-align:middle;margin:7px 0 0 0;width:100%;background: #fcfcfc; background: -moz-linear-gradient(top, #fcfcfc 0%, #d1d1d1 100%); background: -webkit-linear-gradient(top, #fcfcfc 0%,#d1d1d1 100%); background: linear-gradient(to bottom, #fcfcfc 0%,#d1d1d1 100%); filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#fcfcfc', endColorstr='#d1d1d1',GradientType=0 );"> <img src="images/datapolitan_transparent_small.png" style="position: fixed;top: 2px; left: 5px; width: 14%;"> <p style="display:block;text-align:left;color:gray;font-size:1em; position: fixed; top: 0px; left: 155px; height: 30px;vertical-align:middle;margin:7px 0 0 0; ">Advanced Analysis with GIS - NYC Parks and Recreation</p> </div> <div class="footer" style="display:block;color:gray;position:fixed;bottom: 0px;left:0px;height:30px;vertical-align:middle;margin:0 0 0 0;width:100%;background: #fcfcfc;background: -moz-linear-gradient(top, #fcfcfc 0%, #d1d1d1 100%);background: -webkit-linear-gradient(top, #fcfcfc 0%,#d1d1d1 100%);background: linear-gradient(to bottom, #fcfcfc 0%,#d1d1d1 100%);sfilter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#fcfcfc', endColorstr='#d1d1d1',GradientType=0 );"> <p class="footer"> <span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">Advanced Analysis with GIS</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="http://www.datapolitan.com" target="_blank" property="cc:attributionName" rel="cc:attributionURL">Richard Dunks</a> and <a xmlns:cc="http://creativecommons.org/ns#" href="http://ebrelsford.github.io" property="cc:attributionName" rel="cc:attributionURL">Eric Brelsford</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike 4.0 International License</a>.<a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/"><img alt="Creative-Commons-License" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/4.0/80x15.png" /></a> </p> </div> -- class:center, middle  # Advanced Analysis with GIS - - - ## Instructors: Manon Vergerio and Eric Brelsford ### Follow along at: http://bit.ly/advanced-analysis-gis #### See the code at: http://bit.ly/advanced-analysis-gis-code --- # A Few Ground Rules ??? + Facilitators establish the intention we have for the culture of the classroom -- + Step up, step back -- + One mic -- + Be curious and ask questions -- + Assume noble regard and positive intent -- + Respect multiple perspectives -- + Listen to comprehend, not to respond -- + Be present (phone, email, social media, etc.) --- # Introductions + Name + Department / Job + One thing you hope to get out of class today --- # Housekeeping ??? + Facilitator sets expectations with the students + Establishes the "contract" for the class -- + We’ll have one 15 minute break in the morning -- + We’ll have an hour for lunch -- + We’ll have a 15 minute break in the afternoon -- + Class will start promptly after breaks -- + Feel free to use the bathroom if you need during class -- + Please take any phone conversations into the hall to not disrupt the class --- # Goals for the class -- + Describe the foundational concepts of spatial analysis and mapmaking -- + Describe the general structure and purpose of Geographic Information Systems (GIS) -- + Describe spatial data formats and sources of spatial data -- + Apply concepts of spatial analysis using Parks Data to answer a Parks-related problem -- + Discuss resources for further information and instruction on QGIS and other spatial analysis tools --- # Outcomes -- + You will be familiar with the foundational concepts in spatial analysis and mapmaking -- + You will understand the structure and purpose of GIS -- + You will be practiced in applying spatial concepts to real-world problems -- + You will be familiar with the differences between open source and proprietary software applications -- + You will be familiar with resources for further information on how to use QGIS for spatial analysis and mapmaking --- # Goals for this morning -- + Review basic geospatial principles and GIS tools -- + Discuss spatial data formats -- + Demonstrate and practice how to load, filter, and select data in QGIS -- + Demonstrate and practice how to style spatial data -- + Demonstrate and practice how to export data from QGIS --- <!-- opening shapefile --> # Let's Get Started  --- <!-- opening shapefile --> # Let's Get Started 1. [Click this link](data/boros/boros.zip) and download the file to your desktop 2. Unzip the file 3. Open QGIS  --- # QGIS Getting Started  --- # QGIS Getting Started  --- # QGIS Getting Started  --- # QGIS Getting Started  --- # QGIS Getting Started  --- # QGIS Getting Started  --- # Attribute Table (Right click on layer)  --- # Attribute Table  --- # Attribute Table + Each feature has a corresponding row in the attribute table + When a feature is selected on the map, that row is selected in the attribute table + And vice versa --- # Data types -- + As with databases, columns in the attribute table have data types -- + You'll see similar data types as you do in databases --- # Data types -- + integer -- - a number with no digits after the decimal point, like `5` or `100349` -- + real -- - a number with digits after the decimal point, like `5.01` or `100.349` -- + string -- - text, like `Queens` -- + date --- # When do data types matter? -- + When performing calculations—only numeric (integer or real) columns can be used mathematically -- + When styling a layer, some styles require numeric columns --- # Styling Features + Click the button on the top left of the Layers panel + In the Layer Styling panel, select "Categorized"   --- # Styling Features + Select the column that has the data you want to style  --- # Add labels to data + In the Layer Styling panel select the Labels tab, "Single labels"  --- # Add labels to data + Select the column that has the data you want to use for labels  --- # Add labels to data  --- # Styling Labels   --- # Your turn + Style the polygons however you'd like + Change the outline color or add a pattern + Style the labels + Change the font, the font size, or other attributes --- class:center,middle # What did we just do? --- class:center,middle # Some Basic Concepts --- exclude:true class:center,middle # How do we make maps? --- # Geographic Information System (GIS) -- > Any system for capturing, storing, checking, and displaying data related to positions on the Earth's surface + [National Geographic Education Encyclopedia](https://www.nationalgeographic.org/encyclopedia/geographic-information-system-gis/) --- # Or more simply > In a GIS, you connect _**data**_ with _**geography**_. + [GISgeography.com](http://gisgeography.com/what-gis-geographic-information-systems/) --- # Geographic Information Systems (GIS) -- + Create interactive queries (user-created searches) -- + Analyze spatial information -- + Edit data in maps -- + Present the results of all these operations --- class:center,middle # Some More Key Concepts --- # Layers  ####Image Source: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Visual_Representation_of_Themes_in_a_GIS.jpg) --- # Basic Map Using QGIS  --- exclude:true # [QGIS](http://www.qgis.org/)  Source: [NYC Open Data Portal: Open Space (Parks)](https://data.cityofnewyork.us/Recreation/Open-Space-Parks-/g84h-jbjm) --- # Points [](http://docs.qgis.org/2.8/en/docs/gentle_gis_introduction/vector_data.html#overview) --  --- # Lines [](http://docs.qgis.org/2.8/en/docs/gentle_gis_introduction/vector_data.html#overview) --  --- # Polygons [](http://docs.qgis.org/2.8/en/docs/gentle_gis_introduction/vector_data.html#overview) --  --- # Shapefiles -- + Basic file for storing map elements -- + Stores spatial data, like points, lines, and polygons -- + Multiple files comprise a "shapefile" --  --- # Shapefiles  -- + .shp—The main file that stores the feature geometry -- + .dbf—The dBASE table that stores the attribute information of features --- # Shapefiles  + .prj—The file that stores the coordinate system information -- + .shx—The index file that stores the index of the feature geometry --- # You might also see -- + .cpg—Identifies the character set to be used -- + .sbn and .sbx—The files that store the spatial index of the features --- # Shapefiles + Have a few limitations -- + One geometry type (Point, Line, Polygon) per shapefile -- + So sometimes you end up with this  --- # Shapefiles -- + Column names can only be letters, numbers, and underscores "_" -- + Column names can only be ten characters long --  --- class:center,middle # Let's add another layer --- # Adding layers from the Data Warehouse  --- # Adding layers from the Data Warehouse  --- # Adding layers from the Data Warehouse  + Enter `NYC Parks DWH` in the **Connection name** field (this can be whatever you want) + Don't enter anything in **Provider/DSN** + Enter `data.nycdpr.parks.nycnet` in the **Host** field --- # Adding layers from the Data Warehouse  + Click **List Databases** --- # Adding layers from the Data Warehouse  + Click **Test Connection** --- # Connect to the Database  --- # Select the Boro table ### `TBL_CITYWIDEGIS_BOROUGH`  --- # When prompted, select the CRS for the layer  --- # What is the difference between these?  --- # Why use a database? -- + Single source of truth -- + Don't have to worry about moving and sharing files -- + Can be faster and more consistent than shapefiles and other spatial files --- #What is a spatial database? -- + A database that stores spatial features -- + Optimized for processing and querying spatial data, especially location-aware queries --- # Layer Ordering -- + Layers on top are drawn on top -- + Just drag and drop within the Layers Panel to change order -- + Try it now --- # Wrap-Up --- class: center, middle #15 Min Break  #### Source: [TerribleMaps](https://twitter.com/TerribleMaps) --- # 5 Data Analytics Tasks ??? + Facilitator introduces the 5 main tasks of analysis + Facilitator reminds participants we've talked about these in previous courses + We're going to look at these in a GIS -- 1. Filtering -- 1. Sorting -- 1. Aggregating -- 1. Transforming -- 1. Visualizing --- # Data Analytics Tasks: Filtering + We can filter the points based on the values in the attribute table -- + [Click this link](data/parks-311/parks-311-August-2019.zip) and download the file to your desktop -- + Open the shapefile in QGIS --- # Data Analytics Tasks: Filtering + Right-click on the layer and select "Filter" to open the Query Builder  --- # Data Analytics Tasks: Filtering  --- # Data Analytics Tasks: Filtering  --- # Does this look familar? ``` "Complaint Type" = 'Root/Sewer/Sidewalk Condition' ``` -- ## It's very similar to the format for an SQL `WHERE` --- # Data Analytics Tasks: Filtering + Click **Test**  --- # Data Analytics Tasks: Filtering  --- class:center,middle # We can also filter by multiple conditions --- # Data Analytics Tasks: Filtering  --- # Filter and Query - Multiple Conditions  --- # Zoom to Layer  --- # Zoom to Layer  --- # Zoom Selection -- + Select the zoom on the toolbar --  -- + Draw a box around the area you want to zoom into -- + Click the icon to return to the previous map extent --  --- # Pan Map + Select the hand tool to pan around the map  --- # Exporting Data  --- # Exporting Data  --- # Exporting Data + There are many formats you can export to under the **Format** dropdown -- + Including Comma Separated Value (CSV) if you want to open the attribute table in a spreadsheet program like Excel -- + If you export to CSV, that file will only have the attribute table—not the geometries --- # Exporting Data  --- # Your Turn + Filter for service requests in your boro + Try and find something interesting + Export your selection as a new shapefile + Change the style of the point, either to a different shape, color, or icon --- class:center,middle # So what is a Coordinate Reference System? --- # Projections -- + No one's favorite part of GIS -- + But a necessary part of it nonetheless -- + Convert points on the 3-dimensional Earth (**latitude** and **longitude**) to x and y coordinates on a 2-dimensional map --- # Projections + Every projection distorts some part of your map  ####Image Source: [Elements of Map Projection With Applications To Map and Chart Construction (public domain material)](https://archive.org/stream/cu31924003898271#page/n58/mode/1up) --- # Mercator Projections -- + A common map projection -- + Makes geometries near poles look bigger than geometries near the equator --  --- # Projections Matter -- + These circles are all the same size on the globe  ####Image Source: [Justin Kunimune (CC BY-SA)](https://commons.wikimedia.org/wiki/File:Mercator_with_Tissot%27s_Indicatrices_of_Distortion.svg) --- # Projections Matter + As are these  ####Image Source: [Justin Kunimune (CC BY-SA)](https://en.wikipedia.org/wiki/File:Mollweide_with_Tissot%27s_Indicatrices_of_Distortion.svg) --- # Projections + For the most part we will work in **WGS 84** (latitude and longitude) -- + In NYC, we use a more accurate projection **NY State Plane/Long Island Zone** --- # Projections + Identified by unique IDs that make it easier to talk about them -- + WGS 84 is referred to as **EPSG:4326** -- + State Plane Long Island is referred to as **EPSG:2263** -- ## Remember these two and you should be set --- # Identifying Points  -- + Click the point  --- # Selecting Points  --- # Selecting Points  --- # Selecting Points - Attribute Table  --- # Selecting Points - Attribute Table  --  --- # Selecting Points - Saving Selection  --- # Selecting Points - Saving Selection  --- # Selecting Points - Saving Selection + If we wanted to reproject the data into a different CRS, we could do that here --  -- + Pick the new projection in the CRS field --- class:center,middle # Now that you know how to work with QGIS, what questions would you like to answer? --- # Some tables we have access to today ## Playgrounds (`TBL_PARKSGIS_PLAYGROUND`) + Name + Borough + Category/Subcategory + Comfort Station + Acres --- # Some tables we have access to today ## Trees (`TBL_FORMSDB_TREEPOINTS`) + Genus + Stump diameter + Risk rating --- # Some tables we have access to today ## Retaining walls (`TBL_PARKSGIS_RETAININGWALL`) + Type + Length + Thickness + Criticality + Year built --- # Generating Ideas  --- name:brainstorm # What would you like to try to answer using QGIS using data in the database?  + **Ideate** - On your own, generate at least 3 ideas (ideally more) on Post-Its ??? + Facilitator gives people 3-5 minutes to write ideas on post-its --- # What would you like to try to answer using QGIS using data in the database?  + **Ideate** - On your own, generate at least 3 ideas (ideally more) on Post-Its + **Discuss** - Review the ideas you came up with amongst your neighbors ??? + Facilitator gives tables five minutes to talk over their ideas with each other + No consensus needed here, this is time to polish and consider topics with an audience --- # What would you like to try to answer using QGIS using data in the database?  + **Ideate** - On your own, generate at least 3 ideas (ideally more) on Post-Its + **Discuss** - Review the ideas you came up with amongst your neighbors + **Decide** - We will form groups around some of the ideas ??? + Facilitator takes ideas from individuals and groups them into common themes + Work toward groups of three or four people based on topic, not necessarily by table + These groups will work on projects together --- # Project + As a group, discuss the data and steps that you will need to undertake to answer your question -- + We don't expect you to know how to do each of these steps yet -- + Write out a series of steps, and your group will work through them this afternoon --- # What We've Covered -- + What is GIS -- + Basic GIS concepts and tools -- + Adding, styling, and labeling data in QGIS -- + Projections -- + Selecting features -- + Exporting data --- class:center,middle # LUNCH  #### Source: [TerribleMaps](https://twitter.com/TerribleMaps/status/1188538721039273984) --- class: center,middle # Welcome Back! ## https://youtu.be/vVX-PrBRtTY --- class: center,middle # Tell us one thing you learned this morning that you found useful, interesting, and/or helpful --- class:center,middle # What do you think of QGIS so far? --- # Goals for the Afternoon -- + Learn how to join features in QGIS -- + Work on a question you want to answer with QGIS -- + Create printable maps in QGIS, including basemaps -- + Share resources for further learning --- # But first, we need to do a little setup --  --- # Go to the network tab  --- # Set up the proxy  + Proxy type: `HttpProxy` + Host: `bcpxy.nycnet` + Port: `8080` + Exclude URLs: `10.*;*.nycnet` --- # Basic Spatial Joins  + One of our Data Analytics Tasks: Aggregating --- # Basic Spatial Joins  ## Point to Polygon + Relate points inside a polygon to that polygon (ex. count the number of points) -- ## Polygon to Point + Points can take on value of enclosing polygon --- # What are some of the spatial joins we could do with this data?  --- class:center,middle # Let's do one together --- # 311 requests by boro  --- # 311 requests by boro  --- # 311 requests by boro  --- # 311 requests by boro  --- # 311 requests by boro  --- # 311 requests by boro  --- # Does this feel familar? -- + It's similar to using SQL to aggregate data using `GROUP BY` -- + QGIS is doing something similar to ```sql SELECT COUNT(*) FROM requests_311 GROUP BY boro ``` --- # Your Turn + Count the number of Parks 311 service requests in each [community district](data/nycd_19c/nycd_19c.zip) in your boro + Style the community districts by the number of service requests --- class:center,middle # Project time --- # Project + Work with the group that you formed before lunch -- + Explore the data available in the database to work toward answering your group question -- + Try to follow the workplan you came up with before lunch -- + Document your steps and keep your data organized -- + Don't worry about exporting your map yet, we will talk about cartography and Print Layouts next ??? + Groups work on their projects together for 45-60 minutes + Groups should access data in database to try to answer their questions + Facilitators work to keep groups moving toward a mappable solution --- # One potential issue when exporting data from a database  --- # A solution + When saving, expand *Select fields to export and their export options* -- + Uncheck *GDB_GEOMATTR_DATA* --- # A solution  --- class:center,middle #15 Min Break  #### Source: [TerribleMaps](https://twitter.com/TerribleMaps/status/1161215929386242048) --- class:center,middle # Data Analytics Tasks: Visualizing --- class:center,middle # Types of Maps --- # General Reference Maps -- + Show important physical features of an area -- + Include natural and man-made features -- + Usually meant to aid in the navigation or discovery of locations -- + Usually fairly simple -- + Can be stylized based on the intended audience (tourists vs locals) ---  #### Image Source: [USGS](http://nationalmap.gov/small_scale/printable/reference.html) --- # Thematic Maps -- + Focuses on a specific theme or subject area -- + Features on the map represent the phenomenon being mapped -- + Spatial features used for reference --- # Thematic Maps  #### Image Source: [USDA](http://www.usna.usda.gov/Hardzone/ushzmap.html) --- # Choropleth  #### Image Source: [geogalot](http://www.geogalot.com/myp-humanities/year-9/understanding-hazards/003---choropleth-mapping) --- # Choropleth  #### Image Source: [floatingsheep](http://www.floatingsheep.org/2012/07/church-or-beer-americans-on-twitter.html) --- # Area Cartogram – Electoral Votes by State  #### Image Source: [US FWS: Types of Maps](http://training.fws.gov/courses/csp/csp7203/resources/Types_of_Maps_2013.pdf) --- # Dorling Cartogram – Obesity by State  #### Image Source: [A Tour Through the Visualization Zoo](http://homes.cs.washington.edu/~jheer//files/zoo/) --- # Base Maps  ####Image Source: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Visual_Representation_of_Themes_in_a_GIS.jpg) --- # Base Maps  --- # Base Maps + Adding base maps will give your map context -- + In QGIS, you need a plugin to use base maps -- + There are several, but we're only going to use one of them --- # Base Map Plugin + From the Plugins menu, select "Manage and Install Plugins"  --- # Base Map Plugin + Search for the QuickMapServices plugin and install it  --- # Setting Up QuickMapServices Plugin + Go to the Settings Menu  --- # Setting Up QuickMapServices Plugin + Get the contributed packs  --- # Setting Up QuickMapServices Plugin + Revel in all the beautiful base maps  --- # Setting Up QuickMapServices Plugin  --- # Or use the Parks Basemap -- + Create a new WMTS connection --  --- # Use the Parks Basemap + Use this [URL](https://tiles.arcgis.com/tiles/xJHn8F2NTtwCMFtX/arcgis/rest/services/ParksBasemap/MapServer/WMTS/1.0.0/WMTSCapabilities.xml?cacheKey=863bddb6622687b3)  --- # Use the Parks Basemap + Connect and go to Tilesets  --- # Use the Parks Basemap  --- class:center,middle # Cartographic principles --- # Hierarchy -- + Make the most important elements of your map look the most important -- + Also avoid base maps that strongly emphasize features that aren't relevant on your map --- # Colors -- + Try to use colors to add clarity to your map -- + The contrast between different elements on your map should be enough to make each clearly visible --- # Scale  #### Image Source: [The Power of Maps and GIS](https://krygier.owu.edu/krygier_html/geog_222/geog_222_lo/geog_222_lo04.html) --- # Scale + Make sure the level of detail is appropriate to your map --- # Print Layout -- + How you make exportable and printable maps in QGIS -- + Able to add map elements (legends, scales, text, etc) --  --- # Create a new print layout  --  --- # You are greeted with a blank slate  --- # Add New Map tool will add your current map  --  --- # Customize item properties on the right  --- # Don't forget a title and your sources   --- # There are a few exporting options  --- # Now you can share your map or print it  --- # Parks has map guidelines  #### Via [NYC Parks Map Guidelines](http://wss.parks.nycnet/gis/Shared%20Documents/Forms/AllItems.aspx?RootFolder=%2Fgis%2FShared%20Documents%2FBranding%20Guidelines&FolderCTID=0x01200011B16AAACFDE434BA7C55644B37D9C82&View=%7BC006B00D%2D3C9A%2D499B%2DAF4B%2DB37AEDF3C79E%7D) --- # Parks has map guidelines  #### Via [NYC Parks Map Guidelines](http://wss.parks.nycnet/gis/Shared%20Documents/Forms/AllItems.aspx?RootFolder=%2Fgis%2FShared%20Documents%2FBranding%20Guidelines&FolderCTID=0x01200011B16AAACFDE434BA7C55644B37D9C82&View=%7BC006B00D%2D3C9A%2D499B%2DAF4B%2DB37AEDF3C79E%7D) --- class:center,middle # Back to your projects --- # Your turn—style and export + Use the cartographic concepts to style your group's map + Create a Print Layout of the map + Export the map as a PDF --- class:center,middle <h1> <a href="https://script.google.com/a/macros/datapolitan.com/s/AKfycbwMcE5pcJwZHdbSCN_2epwaXnRLSRPaLbHCAhxaZJ79UXaRpQ_l/exec" target="_blank">Click to submit your work</a> </h1> --- class:center,middle # Presentations --- # What We've Covered This Afternoon -- + Adding base maps to QGIS -- + Installing plug-ins -- + Joining data -- + Creating a printable map in Print Layout --- # Some Other GIS Tools  --- #[ArcGIS](http://www.esri.com/software/arcgis/arcgis-for-desktop)  #### Image Source [Esri](http://www.esri.com/news/arcuser/1012/a-workflow-for-creating-and-sharing-maps.html) --- # ArcGIS + Parks has a license with Esri, so you can use ArcGIS Desktop and ArcGIS Pro --- # ArcGIS + You have access to many training materials at [Esri Academy](https://www.esri.com/training/)  --- # ArcGIS + If the training says "Requires Maintenance", the Parks license covers it  --- # ArcGIS + The Parks license does not cover trainings with dollar amounts next to them  --- #[Adobe Illustrator](http://www.adobe.com/products/illustrator.html)/[Mapublisher](http://www.avenza.com/mapublisher)  #### Image Source: [Avenza](https://www.avenza.com/resources/blog/2014/12/22/using-mapublisher-fme-auto-to-load-raster-layers-into-adobe-illustrator/) --- #[Google Earth](https://www.google.com/earth/)  --- class:center,middle # Proprietary vs Open-Source --- # What is open-source?  #### Image Source: [Apertus (CC BY)](https://www.apertus.org/opensource) --- # What is open-source? -- + Free to download -- + Free to use -- + Able to change and customize -- + Usually no enterprise support -- + Supported by a community -- [](http://michaelminn.com/) --- # Proprietary software -- + Pay to download -- + Pay to use (usually with a license) -- + Not able to change or customize (legally) -- + Usually supported by a team of paid developers --- class:center,middle # How does this affect you? --- exclude:true # Proprietary vs Open Source Software + Proprietary software source code is owned by an individual or an organization and tightly restricted (usually for profit) + Open source software source code is freely available to anyone for download, alteration, and republishing --- exclude:true # Proprietary vs Open Source Software + Proprietary software code is generally supported by a team of paid professionals working for the organization that owns the code + Open source software code is generally supported by a mix of paid and volunteer professionals that contribute changes back to the community --- exclude:true # Proprietary vs Open Source Software + Proprietary software is often available only by purchasing a license + Open source software is free to use though there generally a license that specifies the restrictions (if any) on its use and reuse + Companies using open source software may charge for the use of the software through their proprietary implementations or via their infrastructure --- # A Few Things We Didn't Talk About -- + [Normalizing spatial data](https://www.e-education.psu.edu/maps/l4_p5.html) for choropleths ([see this video](https://www.youtube.com/watch?v=t1RvSxNcafU)) -- + [Buffering features](https://docs.qgis.org/3.4/en/docs/gentle_gis_introduction/vector_spatial_analysis_buffers.html) -- + [Geocoding](http://duspviz.mit.edu/tutorials/geocoding/) -- + [Other spatial data file formats](https://gisgeography.com/gis-formats/) (KML, GeoJSON, GeoTIFF) -- + [Editing data](https://docs.qgis.org/3.4/en/docs/user_manual/working_with_vector/editing_geometry_attributes.html#digitizing-an-existing-layer) --- # QGIS - The Good -- + Freely available desktop application -- + Lots of features -- + Works with different data types -- + A strong community developing new features and plug-ins --- # QGIS - The Bad -- + A bit bug-y sometimes -- + Visual style is a little clunky -- + Features change between versions -- + It will crash (but so will ArcGIS) --- exclude:true # QGIS - The Good + Open-source software that’s freely available + Works with lots of different data types, including shapefiles, KML (Google Earth), GeoJSON, and text files + Works with various spatial databases + Strong community developing features and plug-ins --- exclude:true # QGIS - The Bad + Not an enterprise software like Esri ArcGIS + Features tend to change between versions (moving around, menu option changes, etc) + Major versions tend to have major feature changes + Plug-ins don't always work with newer versions + And it crashes (as you've probably already experienced) --- exclude:true # And of course...  --- exclude:true # QGIS - The Bug-y + Like any software, QGIS has bugs + Search sites like [GIS Stack Exchange](https://gis.stackexchange.com/) to see if others have similar issues + View and file new bugs on [GitHub](https://github.com/qgis/QGIS/issues) --- class:center,middle # Good Resources for Further Information --- # GIS Stack Exchange  [GIS Stack Exchange](http://gis.stackexchange.com/) --- # Discover QGIS  [Discover QGIS](http://locatepress.com/dq3) --- # QGIS Map Design  [QGIS Map Design](http://locatepress.com/qmd2) --- # Resources -- + [QGIS online manual Gentle GIS Introduction](https://docs.qgis.org/3.4/en/docs/gentle_gis_introduction/) -- + [QGIS Tutorials and Tips](http://www.qgistutorials.com/en/index.html) -- + [Free and Open Source GIS Ramblings](https://anitagraser.com/) -- + [Eric's YouTube channel](https://www.youtube.com/channel/UCsmBq4ziqRgBZSJK8sGF0Fg) -- + [Copy of today's handout](workbook.pdf) -- + [Datapolitan training classes](http://training.datapolitan.com/) --- class:middle  --- # NYC Parks GIS Resources -- + [Branding guidelines and map templates](http://wss.parks.nycnet/gis/Shared%20Documents/Forms/AllItems.aspx?RootFolder=%2Fgis%2FShared%20Documents%2FBranding%20Guidelines&FolderCTID=0x01200011B16AAACFDE434BA7C55644B37D9C82&View=%7BC006B00D%2D3C9A%2D499B%2DAF4B%2DB37AEDF3C79E%7D) -- + [data.parks sharepoint](http://wss.parks.nycnet/data.parks/SitePages/Home.aspx) -- + Contact [Ben Blackshear](mailto:Benjamin.Blackshear@parks.nyc.gov) and [Peter Carlo](mailto:peter.carlo@parks.nyc.gov) for Esri and Illustrator support --- # Reminders -- + Choose good file names -- + Save your project often -- + Use the Data Warehouse when you can --- # Final Thoughts -- + Maps are a great way to visualize and explore spatial data -- + Some data is only intelligible when mapped -- + QGIS is a cheap (as in free) way to get started -- + There are many resources online for how to use QGIS and other GIS applications -- + Share what you know with others -> Data wants to be mapped --- # .center[Contact Information] ## Eric Brelsford <ul> <li style="font-size:35px"> Email: ebrelsford[at]gmail[dot]com </li> </ul> ## Manon Vergerio <ul> <li style="font-size:35px"> Email: manon.vergerio[at]gmail[dot]com </li> </ul> --- class:center,middle # THANK YOU! # Please take a moment to <br><a href="https://docs.google.com/forms/d/e/1FAIpQLScqxFDbN09n67Od5Cj5hIWatMIwnqBoQhLzTnMn4JT5hcLSBw/viewform?usp=sf_link" target="_blank">provide your feedback on class today</a> ## And checkout [the dashboard of your responses](https://datastudio.google.com/s/kSGuvoygzjg)