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Gardengraphic Information Systems – How Maps and Data Help Gardens Succeed

by Ryan DavisonGIS February 24, 2012February 3, 2022No Comments

Spring will soon be upon us and gardeners of all stripes will begin pruning landscapes and planting vegetables. The National Gardening Association reports that gardeners spent nearly $3 billion in 2011 on food gardening alone. With this much money being spent (not to mention the amount of time) to grow produce or create beautiful landscapes, it stands to reason that most gardeners would appreciate any advantage they could get to make their efforts fruitful.

Modern mapping and GIS is just such an advantage. With a computer and an internet connection, today’s gardener has at his fingertips a wealth of information to help make decisions about things like plant selection, date of last frost and possible blight. The following are just a few of the sites a tech savvy gardener might consider consulting before sliding his spade through the topsoil. Taken together they form what I like to call my Gardengraphic Information System.

The USDA Hardiness Zone Map is probably the best known of the maps listed here. It is used by gardeners and farmers nation-wide as a general guide for selecting plants that will thrive in a given location. The map is divided into zones that depict average annual minimum winter temperatures. When you go to purchase plants or seed packets you will often see what zone the plant is recommended for. The 2012 hardiness zone map is available for download but is now also available as an interactive map that can be searched by zip code.

While knowing the hardiness zone that you live in is important, it can be equally important to determine when frost might begin appearing in the garden in the Fall. The Better Homes and Gardens First Autumn Frost Map might help do just that. While the map is not very precise, it can give a general window for the gardener to keep watch on the temperature.

Another USDA map useful to the gardener is the soil survey map. The map provides soil data and information for more than 95% of the counties in the United States. The soil in an individual’s home garden will likely be slightly different than what is found in the map but the survey will describe the major soil types for a given area. This can be extremely helpful to the gardener who is trying to decide how to best amend his soil for the type of planting he intends to do.

USDA Soil Survey

USAblight is “a national project on Late Blight of tomatoes and potato in the United States”. Tomatoes are one of the most popular vegetables grown in US gardens. It is easy to see why this disease is an important one to track. Late blight was the cause of the Irish potato famine in 1845. USAblight uses a Google map to show reported incidences of Late Blight. The map can be checked to track outbreaks or to report one.

Just to emphasize the importance of Late Blight, uspest.org has designed their own Google powered blight risk map. This one displays not only reported outbreaks but risk conditions throughout the US. Other maps available for use on this site include Daily degree-day accumulation modeling maps and a Page with Weather, Plant Disease Risk and Degree-Day/Phenology models.

Again the USDA provides a useful application that the gardener can leverage for his own use. The PLANTS database provides information about a variety of plants found throughout the United States. The most significant category for the knowledgeable gardener might be on the topic of cover crops. Clicking on this link will bring up a list of cover crops. The user can click on the plant’s name and be taken to an interactive map showing US states and counties. Clicking on your state will show whether that cover crop is native or naturalized. Much more data than this is also presented about your selected plant in a non-spatial format. This database also has fact sheets, guides, culturally significant and alternative crops data and information about invasive and noxious weeds.

Gardening is one of the most popular hobbies in the United States. It is also one that can directly benefit from GIS technology. If you have a green thumb I highly recommend spending a few minutes checking out some of the above resources. If you know of any other sites that would help gardeners be more efficient or more productive, leave a comment below and let me know what they are.

Update 2/25/2012:

The good folks at Hampton Hollow Farm ( @HHollowFarm ) pointed out that they use AgSquared, an online farm planning and management software package, to run their organic vegetable farm in Nova Scotia. According to the AgSquared website the software allows you to create a “Farm Plan” which includes an interactive field layout mapping tool. You can also manage your farm’s schedule, keep year to year records, plan harvests and generate reports. The software looks powerful and was designed for small farms but even the home gardener could benefit from its use. The software’s regular price is only $60 per year making it affordable even for hobbyists.

Are Paper Maps Dying?

by Ryan DavisonGIS February 18, 2012February 3, 20222 Comments

With all of the visualization technology we have available, why do we still find it

necessary to print maps? With desktops, laptops, smartphones and tablets, it would seem that paper map production should be all but extinct. This does not seem to be the case though.

Technology has broadened our access to maps we previously could not obtain and created new mapping products that we might not have even considered before the popularization of personal GIS.

Likewise, when Kindles and later Nooks first started appearing it was said they would herald the demise of the printed and bound book.

We have certainly seen plenty of bookstores go out of business over the last few years but the last time I was in Barnes and Noble there were plenty of books still to be found.

So why do we continue to print what we can simply view instantly and continuously? Here are a few reasons why paper maps are not going away any time soon:

Paper maps do not freeze up or run out of batteries. A GeoPDF on your tablet is a great tool. It becomes somewhat less effective when your tablet is not working properly.
Cost of new devices can be an issue. This is becoming less a factor as technology becomes cheaper and plotters, ink and paper prices stay the same or rise. Technology is still a new investment for many organizations, though.
Paper maps give the big picture. There is only so much of a map that one can fit on a computer screen without having to reduce its on-screen size. It is easier for the brain to process a map of fixed size than to readjust its spatial understanding with a zoom.
Physical maps are easy to share. A paper map can be passed between several people without worrying about computer access, having the right program installed, formatting and compatibility.
Humans still desire tangible and tactile things. A paper map has an aesthetic that appeals to the human need for real things.

Let me know what you think about the future of map media.

Free GIS Data – Ten Favorite Sources

by Ryan DavisonGIS February 14, 2012April 20, 2018No Comments

GIS data is everywhere. Some you have to pay for but much of it is free and widely available like at the sites below. Doing a search for free GIS data will yield some of the data sources I mention here. Locating other sources just takes a little digging. Almost all of these sites are from the U.S. government so the datasets are largely nationwide.

GIS Data Depot – Large data holding in various formats from various sources.
USDA Geospatial Data Gateway – Environmental and natural resources Data including imagery
BLM Internet Sites – List of BLM sites hosting a variety of public lands data. Some state specific data
U.S. Department of Transportation – Transportation data sets and links to other GIS data sources
National Park Service – Interactive data search map. Data provided in .csv or .xlsx formats
EPA – Environmental Dataset Gateway
USGS – High res orthoimagery downloads from the Seamless Data Warehouse
FEMA – Emergency and disaster datasets in formats including KMZ, shp, and geoRSS
Census – TIGER products including data up to 2011
NOAA Vents Program – Great resource for Bathymetric GIS datasets related to hydrothermal vents

Other great sources for free GIS data include city, county and state websites. Pages likely to include useful geospatial data include departments of transportation, departments of wildlife and county assessor’s offices.

Many government entities centralize their GIS data repositories. Others will distribute the data to the various departments they pertain to. With a little bit of site searching you should come up with whatever you are looking for.

Using Pinterest to Catalog Online Maps

by Ryan DavisonGIS February 3, 2012April 20, 2018No Comments

What is Pinterest?Cartographers and GIS users are often visual by nature. Pinterest is a tool that allows the visually minded to capitalize on images posted throughout the web. In a nutshell, Pinterest allows a user to “pin” images, found on the web, to virtual pin boards. These pin boards are organized by topic and the images you save to them link back to the original page they were found on.

Here are a couple of my pin boards I use for geospatial images and maps

Pinterest is sometimes thought of as a social network for women interested in home décor or fashion or recipes. To be honest, I first head about the site from my wife who has a food blog. When I saw what you can do with the site, however, I knew I had found a great resource for organizing, saving, and enjoying maps found online. Of course I don’t use it only for maps. I use it to inventory anything of visual interest that I come across including food, clothing and various hobby interests. That, incidentally, is how the site got its name. Users pin their interests.

The social aspect of Pinterest comes with its follow and re-pin functions. This allows you to view images saved by others with similar interests. I have searched Pinterest and while there are a few maps here and there, the geospatial and cartographic communities have yet to really discover the site.

How to Use Pinterest

As of this blog post Pinterest is available as an invite only network. If you know someone who has an account you can get them to send you an email invite. Otherwise, you can use the Request an Invite button on the log in page.

You can request an invite at Pinterest.com

After receiving an invite and signing up for the site you will be prompted to install a “Pin It” button extension for your browser. When you are visiting a page with images on it, you can click the Pin It button which gives you the option of pinning some or all of the images found. You can add the images to any board in your Pinterest profile or create a new custom board right then. In addition to the image you are asked to provide a description of the pin.

Users are given several default boards when they sign up. These can be deleted or renamed and new boards can be created. This benefits the cartography connoisseur by providing a framework in which to categorize and link to maps found while perusing the web.

Conclusion

The goal of most social networking communities is to interact and converse on topics of interest. Pinterest is no different and is perfect for those of us with geospatial interests. I have only just begun to utilize the site and hope to see my virtual pin boards grow throughout the year. Let me know what you think of Pinterest as a tool for geospatial users. If you decide to join you can

Update:

The more I use Pinterest and engage with the community, the more geospatially oriented folks I find including Big Map Blog who recently started following my pins.

Add Custom Color Ramps To ArcGIS From The ESRI Mapping Center

by Ryan DavisonGIS January 17, 2012June 7, 2018No Comments

**This post references ESRI ArcGIS Desktop 10.0. While the steps listed might work in previous or future versions of ArcMap, it is not guaranteed. There is an updated version of this post here.**

When you have a continuous raster such as a DEM in ArcGIS, you will likely want to adjust its color ramp to better highlight elevation changes. The default color ramps suffice for a majority of situations, however, your choices are still limited. To expand your list you could create your own color ramp or you could import a new .style file containing ready-to-use color ramps and symbols.

The ESRI Mapping Center provides a set of color ramps to help further depict raster surfaces. The ramps are divided among four styles which are Hypsometry, Hillshades, Events and CartoEffects. Following are the steps you take to add the new color ramps:

On the ArcGIS resources page of the Mapping Center choose the Styles tab and click on ColorRamps2.0 to start the download.
After you download the file, unzip it. Inside you will find four .style files and a .txt file describing the styles.
Copy the four .style files to C:\Program Files\ArcGIS\Desktop10.0\Styles.
Open a map document.
Click the customize dropdown and select Style Manager.
On the right side of the Style Manager click on the Styles… button. In the Style References window that opens click Add Style to List….
Navigate to C:\Program Files\ArcGIS\Desktop10.0\Styles where you placed the .style files and select the first one. You might have to repeat this step once for each style.
After all of the styles are shown in the Style References list, make sure they are check marked and click the Set as Default List button.
Click OK and you should see your styles on the left side of the Style Manager. Close the style manager. At this point you can go to the symbology tab of your Layer Properties for a given raster and select one of the new color ramps.

Tip: Right Click on the color ramp dropdown and uncheck Graphic View to see the text descriptions of the ramps.

GISnation.com, Social Networking for the Geospatial Community?

by Ryan DavisonGIS January 12, 2012April 20, 2018No Comments

A new GIS centered web site called GISnation.com launched yesterday. According to the site’s mission statement its purpose is simply to promote “geospatial solutions” and provide a multi-use platform to showcasing GIS projects.

The site tries to pack a lot into its pages. It attempts to provide tools and services such as social networks, job boards, resource searches, news feeds, promotional challenges and project submission platforms. The social networking aspect itself is quite involved. There is a Facebook-like “wall” that you can post updates to, a blogging interface where you can create your own blog within the larger site, a file upload area, a photo gallery, a professional networking page where you can have a LinkedIn-like profile and a project collaboration area where you can work with others on a geospatial solution.

It will be interesting to see how the geospatial community reacts to a centralized site like this that combines multiple aspects of already established social media services in a GIS centered environment. As with any application that claims to be a social media platform, its value will be revealed by the users who engage with it. If the GIS user community has a need for what GISnation is attempting to provide, it could do well.

I will be interacting on the site in the coming days and will try to report my findings. Meanwhile, if you sign up for access to the site, leave a comment here and let me know what you think. Do you think it has a future?

Update: Apparently GISnation didn’t have much of a futre. The site doesn’t seem to be in existence any more. It’s probably just as well since ESRI already has established forums and GIS communities are already created on sites like Twitter, Facebook and Google Plus.

Going With the Flow at AU 2011

by Ryan DavisonGIS December 1, 2011April 20, 2018No Comments

I am a geospatial analyst. I typically work with traditional GIS software like ESRI’s ArcGIS. However, Autodesk products are also heavily utilized in the office where I work. More and more, GIS and CAD are being integrated and it often falls upon me to work with our CAD analyst to explore interoperability between the two products. Over the last few years Autodesk has worked to develop a product called Map3D into a full GIS product to rival ArcGIS. There are those who will claim that Map3D has arrived at this goal but don’t let ’em fool ya. They can both be defined as a GIS but they are not equals. Autodesk is great at creating products that will make and manipulate geometries (think AutoCAD or Civil 3D). ESRI is great at making products that create points, lines and polygons, connect them in meaningful ways and then map them within geospatial coordinates. Autodesk is slowly introducing more geospatial analysis tools into their Map 3D product but one will not find the depth of available tools that you will find in ArcGIS. I digress, however. The above argument goes on every day in places more appropriate than this. At the very least, it should be the subject of another post. Suffice it to say, I have to know both, work with both and integrate both into a workflow. To further this goal, I have been sent to this year’s Autodesk University in Las Vegas, NV.

After two days of the conference I can report mixed feelings about the value of what was there. The overarching valuable service that I could identify was free testing to become certified in a variety of Autodesk products including Civil 3D, Revit and plain old AutoCAD. As a Map 3D user, I have been disappointed to know that they do not currently have a certification for that products. I was told that one is currently being considered, though.

The hands-on labs and lectures have their place but of course you have to put up with a lot of information that is not relevant to your own situation. To be fair, that is the case with many of the conferences I attend such as the ESRI conference. I attended one lecture about terrestrial spatial scanning for integration into Building Information Modeling (BIM). It was interesting and relevant to what we are doing in our office but the first hour was taken talking about minor issues like making sure to carry a long extension cord and manipulating xyz data in MS Access.

Now on to the most important part of the conference – lunch. One is never sure what to expect when it comes to conference food. Some conferences do not provide meals at all. I am happy to report AU does. I was a bit worried about what would be served after I had gone through the line at their “Grab-and_Go breakfast” the first morning. Breakfast was meat, cheese and egg between sort of round croissant halves. Problem was, I couldn’t tell the croissant from the egg from the cheese. The meat was the only thing I could positively identify, so that was all I ate. Lunch, however, was surprisingly good. It included salad, Spanish rice, pinto beans, pork medallions and chili. When I was done I didn’t feel like my gut was going to explode. Nice job AU! The only issue I had was when lunch was over and another session was about to begin, some guy with a mic’d xylophone started banging out a tune that was so annoying it made people stamped out of the room. AU really knows what they are doing.

Between sessions we were treated to coffee, organic teas, soda and water. In the afternoon they rolled out the carts with fruit, desserts and chips. It was really quite good. The second day I skipped breakfast and ate lunch elsewhere but overall I was impressed.

Before I end I have to briefly touch on the vendor area. It was not as big as I thought it would be and the schwag was not as good. That being said, I did come away with some great information about the next generation of Oce plotters and some great Chinese trinkets that have no good use but keep my kids for about 30 seconds. If anyone has any interesting comments or stories about this years AU, please do let me know.