There will be a webinar next week entitled: Extreme Heat and Health: Creating Environmental Intelligence Through Science, Predictions, and Engagement. The specific date and time are: April 28th, 2016 from 4 – 5:30pm EDT. This will likely be an interesting webinar for many Community Health Mappers! Click this link to learn more.
This week the White House announced the Opportunity Project. It is an open data initiative geared towards empowering communities with data and tools to improve economic mobility. Open data is the data equivalent of open source software. It is licensed so that it is freely available to use by anyone.
The main page for the project can be found here: http://opportunity.census.gov/.
It includes links to sources of open data and online tools built on open data, ,many of them map based. This looks to be a great resource for Community Health Mappers!
Currently a new version of QGIS is released every four months! To help users deal with this rapid development pace, the version put out each spring is designated as a long-term release (LTR). This means it will be supported for one calendar year. After that, new stable versions continue to be posted quarterly and any bug fixes associated with those quarterly versions are applied to the LTR. The LTR is recommended for production environments. It has a slower release cycle, and receives regular bug fixes throughout the year. Monday February 29th QGIS 2.14, the next LTR was released. It is nicknamed ‘Essen’ after the town in Germany where a recent developer meeting was held.
Essen has a lot of new features. You can visit the Visual Changelog to read about all the new features in detail. You can also see who developed and sponsored each new feature. Community Health Mappers might be especially interested in these new features:
- the new 2.5 D renderer which allows you to extrude features into space.
- improved labeling
- better control over map elements in the Print Composer
- an improved Processing Toolbox
- the new widget you get by right clicking on a layer in the Layers Panel and choosing Style. It allows you to change the color for a symbol without having to open a single dialog box!
If you are using QGIS you should visit the download page and install the latest version! Note that the Mac installer takes a little longer to assemble and may not be available for several more days.
To start the New Year I thought I’d begin with a review of Community Health Mapping (CHM). There are a lot of new project partners, and I thought it would be a good time to give a project overview. CHM is a collaborative effort between the National Library of Medicine, Center for Public Service Communications and Bird’s Eye View. The National Library of Medicine is funding the initiative.
The overall goal is to empower community organizations serving vulnerable or underserved populations with low cost, intuitive mapping technology. Therefore we’ve been working with programs organizations who:
- Focus on vulnerable populations
- Frequently use and collect data
- Need effective, scalable & easy to use mapping tools
- Lack resources (i.e., for proprietary GIS training & software)
We have identified a suite of tools that allow you to collect custom field data, analyze that data, combine it with other spatial datasets, and generate both static maps and/or dynamic maps on the internet. This allows organizations to collect and work with their own data, and if appropriate, share it with others. CHM involves three components that meet all basic mapping needs:
- Field Data Collection
- Desktop Analysis and Cartography
- Internet Mapping
A given project may not require all three, however, collectively these components address the basic needs of all mapping projects.
Field Data Collection:
Rather than focusing on the use of expensive GPS receivers, we recommend the use of smart phones and tablets for these reasons:
- Most community-based organizations already have them!
- Many know how to use them
- They’re intuitive
- They’re portable
- They come with an on board GPS receiver (iPhone 5 uses GPS + GLONASS)
- Have on board cameras
- Can connect to wireless networks
- Access to the internet
- Email is available
- “There’s an app for that!”
Of course an important consideration is horizontal accuracy. You can read our blog post on that topic to see if mobile smart devices meet your project needs.
When collecting data you need to be able to develop your own custom data collection form. The top three mobile apps we have found are:
- Fulcrum: Easiest to use – iOS & Android – low monthly subscription – http://www.fulcrumapp.com/
- iForm: Slightly steeper learning curve – iOS and Android – free account – https://www.iformbuilder.com/
- ODK Collect: Easy to use – Android only – free account – https://opendatakit.org/use/collect/
Desktop Analysis and Cartography:
After community field data collection, the next step typically involves bringing the data into a desktop GIS. This is the middle step in the workflow. Here the data can be viewed against basemaps such as Google or OpenStreetMap, and combined with other organizational data. This is also where analyses (proximity, density etc.) can be conducted. Presentation quality maps can also be generated in this step.
The software we found to be the best fit is QGIS. This is an open source desktop GIS software. It has many strengths:
- It can consume many kinds of data, including all the data that would come out of the field data collection apps.
- It is both intuitive and robust.
- It has a large suite of geoprocessing tools for analyzing data.
- It will run on Windows, Mac, or Linux.
- It is free to download and install.
- It is well documented.
- There is a large user community.
- New functionality is being continuously added. New stable versions are being released every 4 months!
Often you may want to present an interactive map of your results. Interactive means the map reader can zoom in/out, pan the map and turn layers off and on. For this we recommend CartoDB.
You can sign up for a free account, which gives you 50Mb of storage space. Data can be collected with a smart phone or tablet and brought directly into CartoDB. It is a very intuitive platform. You can literally drag and drop a spreadsheet onto the CartoDB page and have the data upload to your account. It will accept the most common geospatial file formats including: spreadsheets and comma delimited text files with addresses or coordinates, KML/KMZ, GPX, and shapefiles.
CartoDB also has great documentation including:
- CartoDB Editor Documentation
- A comprehensive series of tutorials breaking tasks up into Basic, Medium and Advanced categories
- Tips and Tricks
This blog has a lot of resources including reviews of mapping technology and case studies. You might begin by clicking on some of the links in this entry. We are also working on a 6 lab CHM curriculum that interested parties will be able to use to hone their skills. Stay tuned for that!
We are always looking for new partners and continuously work to support current project partners. If you are interested, or have questions please don’t hesitate to contact John Scott (jscott at cpsc.com) or Kurt Menke (kurt at birdseyeviewgis.com). Most importantly get out and do some mapping in 2016!
Community Health Maps (CHM) conducted it’s largest and most successful workshops ever at the end of September at the Medical University of South Carolina (MUSC). The training at MUSC was divided into three workshops and a presentation. The attendees were a mix of professors, students and researchers, most of whom had little to no experience with GIS. Despite this fact, nearly everyone was able to collect data and make a map. This is a testament to the easy to use nature of the CHM workflow.
It began Monday morning with the first workshop. This was an Intermediate Session for those Community Health Mappers who had been working on projects since the April CHM workshop. We spent two hours covering more advanced topics and answering project specific questions.
Following that, Kurt Menke presented a CHM project overview at a brown bag lunch session to 30 attendees. Matt Jones closed this session with a 10 minute talk detailing how he used The Community Health Maps workflow this summer to map access to care on Johns Island.
The second workshop was Monday afternoon. It was a two hour session covering field data collection with iForm, and mapping that data online with CartoDB. There were 55 attendees at this session, the vast majority of whom had no GIS experience. In just two hours all 55 attendees were able to collect field data and make a map in CartoDB!
The final workshop on Tuesday was a 5 hour session covering the use of QGIS. The workshop consisted of a custom Charleston based QGIS exercise. Each of the 35 participants worked with a set of Charleston GIS data while learning the basic layout of QGIS. They learned how to add data, style it, and compose a map. The workshop ended with a discussion of each participants goals and project specific questions.
In total almost 80 people attended one or more sections of the training! Thanks go out to Dr. Deborah Williamson for hosting the workshops, Dana Burshell for organizing the entire event and assisting during the workshops, and to Sarah Reynolds who was invaluable in providing Mac and QGIS support!
In May Kurt Menke presented the Community Health Maps project, and conducted a training at the Medical University of South Carolina College of Nursing. The presentation was recorded and is now available online. The presentation was about 45 minutes and includes the powerpoint slides, audio and visual. This is a great way for you to learn more about the project from the comfort of your own office!
If you’ve followed this blog, you know that the goal of the Community Health Maps initiative is to help community organizations identify and apply low-cost and easy-to-use online mapping tools (GIS). If you are a first time visitor to this site we encourage you to peruse the blog entries.
The purpose of these tools is to improve understanding and visualization of health conditions in the community so that attention might be best directed to reduce health disparities. This site is a collaborative effort between the National Library of Medicine, the Center for Public Service Communications, and Bird’s Eye View.
To help advance this mission we have developed a survey. The goal of this survey is to assess community health organizations’ satisfaction with GIS / mapping resources currently available to them. The information will be used to improve NLM’s Community Health Maps site and tailor it to specific user requirements.
You are encouraged to click the link below and take this brief survey.