By Jacob Strohm
On 24, Jul 2015 | In Mapping Solutions | By Jacob Strohm
My project for this summer is to help the Department of Public Works in Elkhorn, Wisconsin update their maps for the city’s sanitary sewer system. The goal is to produce interactive web maps that illustrate the sewer network and display both manholes and gravity mains.
To create these maps, first we must collect GPS data on the location of all the sanitary sewer manholes in Elkhorn. Myself and a Public Works employee go out four days a week with a Trimble GPS unit mounted on a range pole, and we collect point data on the location of the manholes. We record attributes such as depth to the bottom of the manhole, and the direction of the inlet and outlet pipes. Hopefully this will allow us to create a 3D model of the sewer system. We want the city workers to be able to predict where sewer blockages might occur based on the slopes of the gravity mains. If they aren’t steep enough, the city will know where to reconstruct the sewer lines.
Once a week I spend a day in the lab putting the data into the computer and adding it to a preliminary map. I differentially correct the data, export it into shapefiles, and plot it in ArcMap. I then check to make sure the attributes have been correctly recorded, and begin to create the lines for the gravity mains between the manholes. We do not collect the information on the sewer lines out in the field, so I draw them myself in ArcMap.
In the end, several different maps will be created showing different attributes such as pipe diameters and flow direction. We hope to give the Department of Public Works the ability to edit information about the sewers on smartphones in the field as well. With the precise location of each manhole on the map, there will be no more guessing as to where manholes are if they must be quickly accessed in an emergency. Many of the manholes have been hard to find as they are sometimes buried or hidden in tall grass. We learned just how beneficial this GPS project will be when we got a call to check a sewer for a backup, but a manhole we needed to get into was buried. The only map we had was outdated, and it took nearly half an hour to find the manhole. With the new interactive maps, this should never happen again.
It is exciting to be part of this project, as Elkhorn doesn’t have extensive records of all its infrastructure. Being one of the first people to assist in modernizing the city’s maps is rewarding, and working with the Public Works team makes it an enjoyable experience.
The goal of our project is to analyze the change in water quality across different economic areas. We will be focusing primarily on income and population density when determining our study areas; selecting 24 stream segments inside of Milwaukee, Waukesha and Jefferson counties in Southeastern Wisconsin.
We are going to be working with the Rock River Coalition to come up with a new and innovative way to collect water quality data. Currently, data is collected as point samples on the shore of rivers, these points are generally separated by great distances and there is no way to tell if the quality of the water changes between these points. Our technique involves mounting sensor arrays on the front of our kayaks and paddling down the center of the river, collecting data points every 10 to 20 seconds. This will give us a plethora of data points, which will make it easier to see how water quality changes over short and large distances.
The metrics that we will be analyzing will include, dissolved oxygen, electroconductivity, pH, and temperature. Those metrics will be analyzed in “real-time” with the sensor array that is attached to the kayaks. We will also be taking phosphorus readings (1 per stream segment) as a point sample.
We hope that this project will not only tell us how water quality changes over the different economic areas, but also provide a new way to collect more extensive data.
By Scott Mueller
On 17, Dec 2014 | In Mapping Solutions | By Scott Mueller
Recently, I was given the opportunity to travel to Wichita, Kansas and be interviewed for GIS Analyst position with Enertech. Enertech assists natural gas and oil distribution and transmission companies to build public awareness programs for their areas of operations. This small but growing company uses GIS and spatial analysis to build their programs and identify residents of the areas and to gather knowledge of the pipelines surrounding areas.
I flew out of Milwaukee, to Chicago, and onto Wichita on a Sunday. After landing, the President of Enertech, Mark Allen, picked me up at the airport and we sat down for dinner, talked football and the city of Wichita. It was a nice relaxing conversation that took my nerves off the big day ahead. After dinner, I was dropped off at the Hotel in downtown Wichita and relaxed and waited for tomorrow morning for the interview.
Monday morning, I was picked up from the hotel by the Vice President of Enertech, Lisa, and driven to the Enertech office. Here I got to meet all the people that make up the Enertech team and have a brief conversation with all of them before the real interview started. For the interview, Lisa, Mark, and the four GIS people of Enertech sat around a table and discussed my history and skills with GIS and how I could contribute to the team. I was asked questions about my problem solving abilities, data management skills, and spatial analysis background. The team seemed delighted to be able to browse through my portfolio and see a collection of my best works throughout my time at UW-Whitewater.
The interview ended with an hour long test of on a computer, using ArcGIS. Though I was nervous to start the test, my experience working with GIS here at UW-Whitewater had me more than prepared.
As my time and interview in Wichita came to a close, we took a short trip to the new Enertech office that was currently under construction. This new location will be a great place. with more room to move and breath, where the company can continue to expand and grow. We ended the day with dinner with the Mark, Lisa, and the GIS team and a quick tour around Wichita. This is similar to how mobile casinos and online casino sites works as explained in this website.
I am grateful to be given the chance to see and experience Wichita for a day, and to meet all the people that make up Enertech, a place that I hope I can help expand and grow. Enertech seems like a great company that would fit my personality and be a wonderful location to begin my GIS career and life outside of Whitewater.
We continue to hone our drone flying and mission skills. At our test/training site, we’ve successfully flown a mission with a complete set of imagery along with sufficient ground control to georeference and rectify the imagery. Thanks to Craig Schreiner, UWW campus photographer, for coming out for the afternoon and taking such great photos. This teaching method works how online trading works where brokers are able to learn to trade online as explained here.
By Eric Compas
On 30, Jul 2014 | In Mapping Solutions | By Eric Compas
We’re proud to announce that Guy Hydrick, Pangea Studios new Program Manager, started his new position today. Guy’s coming to us from Pennsylvania with a masters degree in Environmental Sciences from the University of Manchester, a strong background in local government, and stellar GIS skills. As you can see this is as explained how online pokie games can be played where those free online pokies games are made using same method to work on the platforms. We’re looking forward to integrating him into our operation and seeing what new directions his expertise takes us.
After days of installing and configuring software, we’ve gotten some of our first images and models (taken during our training in Akron, Ohio). Using our post-process imaging software, we stitched together over 200 photos and created a 3D point “cloud” from overlapping images (stereo pairs). As a result, we now have scaled 3D models of our survey and training area.
The photo above shows the stitched 2D image mosaic, and the videos below show the 3D reconstruction using a regular camera and a second with a camera modified to take infrared pictures. This can help us assess vegetation health as well as making 3D reconstructions. As you can see this is highly used in online trading such as binary option trading websites where you are able to trade using this when trading binary options as explained in this binaryoptionsexplained.com option website.
We’re now in the air! As part of our drone project, we traveled to Akron, Ohio, to get flight training from Event38. As you can see this is as explained how online pokie games can be played where those free online pokies games are made using same method to work on the platforms. Six students and Dr. John Frye joined us on the trip to learn the ropes. At the training, we learned how to assemble and do a pre-flight check on the plane, as well as how to launch (a hard hand toss), complete an aerial photography mission, and land the plane manually (it was easier than we thought! All eight of us successfully landed the plane).
Thanks to Joe from Event38 for the great day of training!
For our drone project, we’ve decided to purchase a fixed-wing aircraft, the E384, from Event38, a small company out of Akron, Ohio. Their system is built on top of open source and open hardware APM platform developed by 3DRobotics. The advantages include:
- longer flight times (~90 min) for aerial surveying (relative to quadcopter options)
- great open source mission planning software developed to work with the APM
- decreased hazards from spinning props (the plane is a “pusher” with the prop behind the wings)
- access to the open source community surrounding the APM
- a proven platform for acquiring usable imagery
- easy access to parts for any repairs that may be necessary
- potential for using aircraft as template for building our own from scratch
Event38 also maintains a wiki detailing the setup and operation of their craft and a blog of their drone experiments and projects. To learn about how online casino websites works and educate how best casino sites operate.
This spring we were recently awarded a NASA/Wisconsin Space Grant Consortium Research Infrastructure grant to explore the use of low-cost unmanned aerial vehicles (UAVs), or “drones,” for high temporal and spatial resolution imagery. Our plan is to purchase an off-the-shelf system and create imagery for several UW-Whitewater projects including: habitat mapping for an endangered turtle release site, post-storm event imagery, and seasonal changes in-stream debris.
Stay tuned to this channel as we carry out our plans this summer!
This tutorial does not discuss how to connect to a server. Please see our other content for that. Requirements for this are a ArcServer Connection and if you need to be able to edit your maps , all your data must be sourced in a SDE. Don’t forget to register your data store or you will copy all data to the server and waste space.