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rahmansunbeam

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About rahmansunbeam

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  1. The picture like above are not actual picture of Black Hole (it is a wallpaper 😁 ). Early Wednesday (April 10, 2019) morning, a huge collaboration of scientists are expected to release the first images of the event horizon of a black hole, constructed from data gathered by observatories all over the globe. Combined, the telescopes created a virtual telescope as big as the Earth itself that’s powerful enough to capture enough data from the supermassive black hole at the center of our galaxy. Tomorrow, we may finally see all of that data pieced together. Black holes, by their nature, are impossible to see with the naked eye since they are so dense that no light can escape them. Instead, any images that will be released will be the silhouette of a black hole, an outline against all of the super bright, hot gas that is thought to surround these weird celestial objects. It will be as close as we can get to a picture of a black hole’s infamous “event horizon,” the boundary of a black hole where the gravitational pull is so great that there is no escape. The Event Horizon Telescope actually observed two black holes during one week in April 2017: Sagittarius A*, the supermassive black hole at the center of our Milky Way galaxy, and M87, which is thought to be in the center of a nearby galaxy called Virgo. Both of these objects are thought to be incredibly dense. Sagittarius A*, or SgrA*, is thought to be 4 million times more massive than our Sun and 30 times larger than the star. But because it is so far away — a distance of about 26,000 light-years — the black hole appears to telescopes on Earth as though it is about the size of small ball on the surface of the Moon, according to the collaboration. To focus in on the massive but distant objects, the Event Horizon team employed telescopes in Chile, Hawaii, Arizona, the South Pole, and other locations around the globe. Each telescope measured the radiation coming from the large swaths of gas and dust that are thought to surround black holes. These clouds of gas heat up to billions of degrees, and because the material is so hot, they emit lots of radiation, which the team could then observe from Earth. All of that data was then combined in a supercomputer to make an image that looked as if it came from a single, giant telescope. “This is a picture you would have seen if you had eyes as big as the Earth and were observing in radio,” Psaltis says. Getting all of this data isn’t easy. In fact, the reason it’s taken so long to mount a project of this scale is that the telescopes gather so much information — about one petabyte, or a million gigabytes — of data each night of observing. It’s the largest amount of recording of any other experiment in physics or astronomy, says Psaltis. The team had to wait for hard drive technology to evolve so that it could hold the sheer amount of data that the team was collecting. “Five years ago, you couldn’t buy enough hard drives to have a terabyte of data on a telescope,” says Psaltis. What that enormous amount of data shows could change our understanding of black holes. These objects are so dense that it’s thought that they actually leave an imprint on the surrounding space-time, warping gravity and creating strange effects on their surroundings, which scientists are still trying to understand. A picture of a black hole could tell us more about these odd happenings at the event horizon. - the Verge UPDATE - This is an actual Black Hole ! At the announcement at Washington’s National Press Club. “We now have visual evidence. We know that a black hole sits at the center of the M87 galaxy.” How they took the image First-ever picture of a black hole unveiled
  2. Opps ! Couldn't find free data for Bangladesh. Update: ok, I find few for 2005. Not bad...
  3. As part of ArcGIS Enterprise 10.7, we (ESRI) are thrilled to release a new capability that unlocks versatile data science tools and the limitless potential of Python in your Web GIS deployment. ArcGIS Notebooks provide users with a Jupyter notebook environment, hosted in your ArcGIS Enterprise portal and powered by the new ArcGIS Notebook Server. ArcGIS Notebooks are built to run big data analysis, deep learning models, and dynamic visualization tools. Notebooks are implemented using Docker containers – a virtualized operating system that provides an isolated “sandbox” style environment for each notebook author. The computational resources for each container can be configured by the organization – allowing the flexibility for notebook authors to get the computing resources they need, when they need it. Seamless integration with the portal ArcGIS Notebook Server is a new licensing role for ArcGIS Server. Because it works with the Docker container allocation technology to deliver a separate container for each notebook author, it requires specific installation steps to get up and running. Take a look at the ArcGIS Notebook Server install guide to see how it works. Once you’ve installed ArcGIS Notebook Server and configured it with your portal, you can create custom roles to grant notebook privileges to the members of your organization so that they can create and edit notebooks. Put Python to work for you At the core of the ArcGIS Notebook experience are Esri’s powerful Python resources: ArcPy and the ArcGIS API for Python. Alongside these are hundreds of popular Python libraries, such as TensorFlow, scikit-learn, and fast.ai. It all comes together to give you a complete Python workstation for spatial analysis, data science, deep learning, and content management. The Standard license of ArcGIS Notebook Server, which comes at no additional cost for ArcGIS Enterprise customers, bundles the Python API and nearly 300 other third-party Python libraries built-in. The Jupyter notebook environment has long been an essential medium for Python API users; with ArcGIS Notebooks, that environment is now available directly in the ArcGIS Enterprise portal. Turn analysis into action Location is the common thread that runs through almost any problem. What you buy, who your customers are, the impact that your business has on the natural world, and that the natural world has on your business are all problems of location. Traditional data science has many powerful tools and algorithms for solving problems. Spatial data science – GeoAI – also brings in spatial data, methods, and tools. GeoAI can help you create more effective models that more closely resemble problems you want to solve. Because of this, spatial data science models are better suited to model the impact of the solution you create. . Installation and getting started Esri Jupyter Notebook And those who wants their own free jupyter notebook # install miniconda and hit conda install -y jupyter 😁
  4. A quick google search suggests this could be PyQt related. Try updating the packages. https://windows-hexerror.linestarve.com/q/so44604689-Pycharm-error-Process-finished-with-exit-code-1073740791-0xC0000409 https://intellij-support.jetbrains.com/hc/en-us/community/posts/360000138030-Pycharm-Debugger-Process-finished-with-exit-code-1073741819-0xC0000005- https://stackoverflow.com/questions/50620954/process-finished-with-exit-code-1073741819-0xc0000005-pycharm
  5. For segmentation Orfeo Toolbox is a better option than QGIS. You can add OTB to QGIS if you don't want to leave QGIS. BTW, you question is too broad to answer.
  6. I think it is more like asset management and navigation for indoor. This is helpful for managing personnel or assets within roofed infrastructure (ie. a large factory, multistorey building or underground construction site who cannot use GPS) by utilizing IoT devices and GIS software. I heard about similar tech when I was at Esri Singapore for few days.
  7. Huawei announced their foldable phone too, its called Mate X. Something new has just begun. 😎
  8. Samsung, on February 20, announced Galaxy Fold along with rest of the their Galaxy lineup. All eyes were on their newest and priciest addition called Galaxy Fold. This is a the foldable phone/ tab with 12GB RAM and 512GB storage with a price tag of about $2000. Is it too pricey? Reveal video - https://youtu.be/7r_UgNcJtzQ I am still not convinced even a device like this justify a $2000 price tag. If I ever have this much money, I'd probably build a gaming PC and still be able to save 😄.
  9. Taking picture of a stranger has become easier though (oh I was just using the map, lady !!). 😉
  10. I think most of us have had this experience, especially when you’re in a big city: you step off of public transit, take a peek at Google Maps to figure out which way you’re supposed to go… and then somehow proceed to walk two blocks in the wrong direction. Maybe the little blue dot wasn’t actually in the right place yet. Maybe your phone’s compass was bugging out and facing the wrong way because you’re surrounded by 30-story buildings full of metal and other things that compasses hate. Google Maps’ work-in-progress augmented reality mode wants to end that scenario, drawing arrows and signage onto your camera’s view of the real world to make extra, super sure you’re heading the right way. It compares that camera view with its massive collection of Street View imagery to try to figure out exactly where you’re standing and which way you’re facing, even when your GPS and/or compass might be a little off. It’s currently in alpha testing, and I spent some hands-on time with it this morning. Google first announced AR walking directions about nine months ago at its I/O conference, but has been pretty quiet about it since. Much of that time has been spent figuring out the subtleties of the user interface. If they drew a specific route on the ground, early users tried to stand directly on top of the line when walking, even if it wasn’t necessary or safe. When they tried to use particle effects floating in the air to represent paths and curves (pictured below in any early prototype) a Google UX designer tells us one user asked why they were ‘following floating trash’. The Maps team also learned that no one wants to hold their phone up very long. The whole experience has to be pretty quick, and is designed to be used in short bursts — in fact, if you hold up the camera for too long, the app will tell you to stop. Firing up AR mode feels like starting up any other Google Maps trip. Pop in your destination, hit the walking directions button… but instead of “Start”, you tap the new “Start AR” button. A view from your camera appears on screen, and the app asks you to point the camera at buildings across the street. As you do so, a bunch of dots will pop up as it recognizes building features and landmarks that might help it pinpoint your location. Pretty quickly — a few seconds, in our handful of tests — the dots fade away, and a set of arrows and markers appear to guide your way. A small cut-out view at the bottom shows your current location on the map, which does a pretty good job of making the transition from camera mode to map mode a bit less jarring. When you drop the phone to a more natural position – closer to parallel with the ground, like you might hold it if you’re reading texts while you walk — Google Maps will shift back into the standard 2D map view. Hold up the phone like you’re taking a portrait photo of what’s in front of you, and AR mode comes back in. https://techcrunch.com/2019/02/11/hands-on-with-an-alpha-build-of-google-maps-augmented-reality-mode/ Video demo - https://www.youtube.com/watch?v=QW1QT7DOOdA
  11. Bienvenue à mon premier tutoriel en français. Il y a beaucoup d’erreur ici, j’en suis désolé. Ici, je vais expliquer comment utiliser ArcGIS Enterprise pour créer un système qui recherche automatiquement des données dans la Web Map lors de l’updater. Nous avons utiliser notre ordinateur. Premièrement, nous devons pouvoir accéder à ArcGIS Server et Portal au notre ordinateur. Nous allons utiliser PostgreSQL. Utilisez la Enterprise Geodatabase et ouvrez une connexion à ArcGIS Desktop. Nous devons pouvoir nous connecter et envoyer les données à la database. Utilisez le ArcCatalog et copiez un Shapefile dans la Enterprise Geodatabase. Accédez à ArcToolbox, utilisez un outil appelé "Create ArcSDE Connection File" et créez une file .sde pour de connexion. Le fichier .sde contient toutes les informations nécessaires pour la connexion de la géodatabase. Sur l’ArcGIS Server, accédez à la ligne Site> Data Stores, puis cliquez sur enregistrer pour la Database. Vous verrez une nouvelle page, 'Register Database'. Utilisez le fichier que nous avons créé la dernière fois. Validez la connexion en utilisant 'validate all'. Si vous mettez à jour la Shapefile dans la géodatabase, le service webmap sera mettre à jour automatiquement. Nous avons donc créé une Web Map avec données certaines sur Enterprise Geodatabase qui sera mise à jour elle-même. C’est ça, ça devrait marcher. lien d'origine - Comment mettre a jour les données automatiquement à l’aide d’ArcGIS Enterprise ☺️
  12. For those who were looking for a style editor like Mapbox for Esri basemaps, here is one. This is an interactive basemap style WYSIWYG editor readily usable with ArcGIS Developer account. How it works Start by selecting an existing Esri vector basemap (e.g. World Street Map or Light Gray Canvas) and then just begin customizing the layer colors and labels from there. You can edit everything from fill and text symbols to fonts, halos, patterns, transparency, and zoom level visibility. When you are finished, the styles are saved as an item in ArcGIS Online with a unique ID. The Map Viewer or any custom application can then reference the item to display the basemap. Design Tools The editor makes styling easy by allowing you to style many layers at once or by allowing you to search for individual layers of interest. Here are some of options available: Quick Edit – select all layers and style them at once Edit by Color – select and replace a color for one or more layers Edit Layer Styles – search for one or more layers to style Layer Editor – click the map or the layer list to perform detailed editing on a layer Quick edits Layer editor Try it! To start customizing a basemap sign into the ArcGIS for Developers website and click “New Basemap Style”. There are also new ArcGIS DevLabs for styling a vector tile basemap and displaying a styled vector basemap in your application. For more inspiration visit this showcase of some custom styles we have created. ArcGIS Vector Tile Style Editor
  13. How to round up/down an pixel value of a raster to a pixel value with 2 decimal places? related - Round Raster to next higher or lower int
  14. But I thought IBM hardware is owned by Lenovo. Btw, good for RedHat though.
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