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Adopting OGC Standards in a Flood Alert System

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for and some Palmolive just contextualized some is so 1 of the state
of Brazil the biggest not the biggest but the most but there's a bit The biggest population of Brazil and our work other work is related to mainly in the metropolitan area of some power that that that you can see that the population there it's a very huge about 20 million people in this area so very populated conveyed with a lot of problems with the flooding which is our main concern in this area but just to
contextualize will uh in which it situation we use to the GIS processing I'd like to talk about a little about symbolic to the problems that we have during the summer well this is a typical day in the afternoon and some pollo without length and the but this for a bad
day can sample of in the afternoon
after us to view the event of rain so but the same situation without
knowing with the it doesn't have a variety
but a sometimes happens and it causes a lot of problems because imagine in a city some follow has 12 million people so the dead traffic no it's it's a big problem during the the showers but it without written this situation if the becomes even worse but so a simple really
we have a some some tools to deal with the situation we use a by the way there which can did you know cast in and for some actions to to be taken in advance so we have a nowadays we have as band reader with very nice of accuracy so this is a was because this is the most important tool that we have to To deal with this problem
so this is a typical information of freedom this is on the left hand side we have the the scale the hot hot at the caller the
more intense the rain and the lighter the color lower intensity ring we also use
some form the ground stations we used to measure the level of the reverse under the door the intensity of doing using some equipment so whether the the solid and the weather stations for doing this in
metropolitan area we have about a 300 300 the stations we use to arrested transmit data our some in some cases the satellite that you can see some chart
here of this is the 1st when did accumulated rain and in time and the 2nd 1 is that the level of the river that this is good to that it would be good to to realize that that we have some levels of a warning levels catalog previously like attention emergency and flirting so in each case but the water which is level actions must be taken by civil defense and OR governmental institutions this
just river cross-section sample from an the river in their regular situate situation
this is river enough the hot situation near the fledging level the Our
main customers are the governmental agencies like for water and energy and users and distribute fans a son to do construction and traffic engineering also they use this kind of information
of some policies here is divided FIL in many that should be areas and we didn't just kind of monitoring and for each superior so we have the collar the scale of color which shows that when it's and theologian extinction and uh red it's in our in our so at this point hope as for my critique Ivan to continuous and to show how to use lower how we use the GIS to little morning and this map you can see that so we get is map from GO GeoServer and we have some static information and some dynamic information in the states our feeds to the GeoServer to change the color In depending of the bias the status of the area the our infrastructure is based
at all on the 2 machines locally the 2 machines on via more and remotely vehicle machines on them as we use the line weak bases sent center west which varnish for getting in the performance and cash because that we have are a lot of traffic may mean that site you saw in the previous slide that site to we have a 1 day week of modern 2 million hates in 1 day and when the information is created online it spends a lot of processing and 2 we now will use of the each processing gets care should by 1 unit then we have the some delay on the uh uh update but just 1 minute that's not too too much but gives get a good performance with low emissions we use Java we to up by Schank at 7 and your server and our main data database its data D B 2 and we have also posters and both but for smaller things our current database for at the medical data have tool 160 million records it's almost the 47 gigabytes of data and this structure is basedon vanishing front of our services all services and then all requests passes on on varnished you get cash and gives good performance of all those services are vehicle and they are redundant In these light you don't see you only see the 1 box for each service but they are at the the and what we use about the GAS services and and the open protocols we use they do a mass they effects for a local data and external data we got some data from outside of we create on G 0 7 June to images for publishing directly and using internally as bases on shapefiles and now our product uh we use also image maps generated on GeoServer to create paints show hints about the places where the user puts the mouse over here we we have 1 example about how we use GeoServer to simplify our work our work we have a product that show the contour of the rain and the the wall only 1 products generated by the rater we can have a us 1 shape on the energy server and we have some filters to show its s many different layers for the user and also we users CSS and SLD for defining the this structured data display and for that's that's that's product we show them the image that shows that we have a
counter on the rain cells and a small point in the middle of the cells that is the case that show on the xml before before on the here we have a all the cells from the past it so you can see on the right the the checkbox on air off of that 1 and we index is light that we're changing the current selected now we have the forecast and here we have all then together we could we have the the desorption that's very easy for the user to select and very easy for us to program because we just needs to be created in an XML to show tool configure our service obligations we generate
using the GeoServer many formant and also some formats sire get directed to the user and the user's own browser and some formats are presented IDN by our publications in mainly we provide PNG GIF JPEG for the web browsers together with the image maps and for use on google works we generate directly came out unbent PNG at some images we do with transparency some images and without those proceed to make it easier depending on where it will be shown to decide what's better and in GIS we use data and services they value MS WFS the a here
we we have a 1 of the changes on Our system we have the the the map on the left that shows uh old system and that we have a cat Alltel CAD mapped for the region every time you have to make it clear that sort change something we have to do manually everything check if the the bounds of the correct everything would be made mandatory we have a lot of problems with these some horse time-consuming for updating and the not good now we we have a some maps that to our directly from files and some some they have constant Directive on database that we can put together these way if you need to change the bombs that could we just have to read great execute the query no problem to update and fast they're easy to decide what you want to go over the each layer then is that very if we get the center and here we have on
another example that was very difficult to implement in our old system now we have some arrows to show the wind direction directly over the rain well the callers are easy to update we feel side sometimes we we need to change a color just well I of configuration and we can change everything well just for information In these new things and also we have option to take in this collars and then we will blink the same cells and in image that's our wheat same color and you can say all where is then you need the range and that I rule blink we have
option to use to external data like OpenStreetMap sometimes the user wants to see at street level we don't have to create In our system we just that connects you OpenStreetMap choose these it's we didn't we dealt ring and more
technical information I don't know always home of our technical or not we have we have some things that we have to back to take a lot of work to understand because documentation was not very good but we we have implemented our own data to plug into gel tools and that that the star convex our data that stems from the raider that's appropriate battery farmer the from the company that made the radar but they provided the data formats and we created the debate is starting to rate directly onto your server that correctly that we implemented using the abstract file data stock but the which journey said that it's not a good thing because it's we would be deprecated and I we started to me great to content that data stop it's very easy to me great I have done during the workshop of the yesterday morning because we have a and all the difficult was done before for everyone that once you make something like these I recommend use these 2 links of the coat the communications that are data star and also the links which Wichita has this that sample how to create and RCSB they could stop from the old method a new method it's very easy to to do these that fire quit steps you have to implement a factory extends the data and you have to put in the file name of your class that's the quick steps to create your own data store for creating a that the star you have also to create a new data source but it sounded too tired you can see uh we have 2 basic implementations 1 that reads our database and provides the layers definition of the layers that we use and also we have the file data started to read the file and show uh the shade the factor data on fortitude tools your server to be presented and for doing these it's not easy to being restarting GeoServer server I recommend user and J. FrameNet far J. NetFrame far testing you'll gold in jail tools showing J. frame and if the everything works you probably will have no problem putting working on Jill Server and you have just to put to the jars in that directory tha and a data conversion we have tries uses roster and also we have tested with the vectors and we decided to use vectors create in a squire for each point to that from our radar data that becomes easier to style and chose to do users then uh creates a lot of the memory use bullets Our date they just his squire is we don't have much problems and once we have a 1 of the things that are are difficult that's so we have a some products that can from the raider that 1 single file have multiple types of products different shapes different data then we created the the goal layer that we read the same file and provides a different schema for data then we use the the debut GSH form that it's say EPS cheap for teachers 6 and due to do the conversion when necessary we don't have to mind about to the convention problem projection problems what we I want you to it's difficult to say we will do a because some type something's changes and we have a lot 3 priorities will I expects to implement the SOS interface to this sensor observation at interface EEG analysis old implemented the data start which time supports correctly I have a simple implementation but I I think it's not correct to we have to rewrite it I offer direct they don't mass service afford the external users correctly only did since our internal system uses other day kernel system uses the data where max at s and also all we are turn users but not for the public because it's broke needs to many method machine computing and we as checking what's the best way to provide these but we want to provide this kind of service for use because it had the user will have a better interface can use it and other problems local problems instead of just web browser the multidimensional we have low seen workshop that the I understand that now that and uh the nation was i can be user together also for vector and the appear to be a good way to integrate we our system and the next you I will get to the cold I will try to implement that in our system of no
I think they it's an I. of what we do and maybe you have some questions that can be used them time we have here tha the the same and and no will when when needed have the code you have to for the data you have basically 2 options we use rostered deaths just playing points and the winner I call factor is like the shape 5 but the vector vector isn't there no formant all shapefiles will be managed by i-vector as I'm converting my matrix to internal I use of the vector like that find what and the and you say how we
go from these should that
other that point is mentally built on because we have many information and we have the some problems when we tried we use some ultimate King formations because sometimes we get the censored that gets a problem it's goals hot very high so too fast and not root real sometimes it's real then that the people that works should aired 24 by 7 in the system check the information's get some of our internal pilots and really decides it goes yellow it goes right base it on some information that the system provided but the but did that the mission go to public and is updated 1 minute by 1 minute but just when 1 bears some selected information to goes to public we have a many things that provide information under 1 user the and of same so we have we have the r the ray their uses and Squire shady square points we have created the eroding that's is make a simple simple conversion that's this defines the for the central point of the rater and we goals to kill me that went to a mere 1 kilometer and creates them the this quiet reads we have tried lead to the difference the and the role teens and find 1 that gets gets better better results we have a bloody at Mory's models and the decided by 1 that's a different we here we have uh let me show what is not
really under the presentations after presentation just for reference we have
that square and we have a better 1 that you see that's not really square in the same area we can choose between the projections and decide what to better we have decided to forward these square the the the yeah on and
OK for a Realschule we don't use next red the yes so would you use the hydrological model and now we are using a student stream model from the EPA and that we assimilate data from weather radar and a weather station and this model between runs in real-time every every 10 minutes it makes a grant to do the forecasting power for this for reduced forecasting generates of a floating in the area for the next the next in 2 hours so we use that images from weather radar images the the curent image back to that of but also the for the nowcasting generated by by weather radar which can give us so that when was in advance that with a a good reliability so this information is assimilated by by our hydrological model the question so the so thank you and if
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Metadaten

Formale Metadaten

Titel Adopting OGC Standards in a Flood Alert System
Serientitel FOSS4G 2014 Portland
Autor Martinez, Ivan
Lizenz CC-Namensnennung 3.0 Deutschland:
Sie dürfen das Werk bzw. den Inhalt zu jedem legalen Zweck nutzen, verändern und in unveränderter oder veränderter Form vervielfältigen, verbreiten und öffentlich zugänglich machen, sofern Sie den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen.
DOI 10.5446/31589
Herausgeber FOSS4G, Open Source Geospatial Foundation (OSGeo)
Erscheinungsjahr 2014
Sprache Englisch
Produzent FOSS4G
Open Source Geospatial Foundation (OSGeo)
Produktionsjahr 2014
Produktionsort Portland, Oregon, United States of America

Inhaltliche Metadaten

Fachgebiet Informatik
Abstract This presentation is about the adoption of the OGC - Open Geospatial Consortium standards in Sao Paulo Flood Alert System which was based on matrix coordinates and static maps.The Flood Alert System has more than 300 telemetric stations composed by rain gauges, water level sensors placed on rivers and reservoirs, water quality sensors, weather stations and a S-band weather radar reaching 240 kilometers of scanning range. The system offers Real Time support for a large metropolitan area and its Emergency Centers, Civil Defense groups, Government, Service companies and general public.We have integrated Geotools (for data conversion), Geoserver (services like WMS, WFS), DB2, OpenStreetMap, uDig, Quantum GIS and some other softwares in our architecture. This set of tools provides many possibilities to easily integrate our data with other systems and external data, like some Hydraulic and Hydrological models that return geospacial data with flooding area forecast and vulnerable buildings.Talking about the architecture, the adoption process, some of the issues, apllied solutions and further development.
Schlagwörter flood alert system
telemetric stations
radar
geoserver
geotools

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