intertronic

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Everything posted by intertronic

  1. intertronic

  2. Hello everyone, i was on this site http://www.3ders.org/3d-printer/3d-printer-price.html where you can get an overview about the prices and some specifications of 3D Printer Do-it-yourself (DIY) and Cmmercial does anyone have some experience to print 3D models created with GIS? i founded (thanks to google) an instruction, seems cool https://geonet.esri.com/servlet/JiveServlet/download/1734-1-99144/How%20to%203D%20Print%20a%20Topo%20Map%20with%203D%20Features%20Anywhere%20in%20the%20World.pdf https://geonet.esri.com/blogs/larry-zhang/2014/10/21/how-to-3d-print-a-topo-map-with-3d-features-anywhere-in-the-world
  3. love the video with qgis, thanks 3dbu
  4. my advise for a real trial with a licence : 1. wait to 01 february 2017 2. create a virtual machine with windows7 3. go to www.arcgis.com and create an esri accont 4. participate to the free esri mooc course 5. http://www.esri.com/mooc/imagery 6. you will get an trial and activation for more then 2 months
  5. M6.5 - 19km SE of Sigli, Indonesia (06 DEC 2016) http://earthquake.usgs.gov/earthquakes/eventpage/us20007z80#executive http://earthquake.usgs.gov/earthquakes/feed/v1.0/detail/us10007ghm.kml M7.8 - 68km WSW of Kirakira, Solomon Islands (08 DEC 2016) http://earthquake.usgs.gov/earthquakes/eventpage/us20007z80#executive http://earthquake.usgs.gov/earthquakes/feed/v1.0/detail/us20007z80.kml
  6. Hello everyone, just wanted to share a news about a new tool of google : Timelapse Here a video of Las Vegas: and of Aral Sea and a new city built in China Highlight Playlist https://www.youtube.com/playlist?list=PLWw80tqUZ5J_T8EKLKEWYd_NcFPiq9zTN Summary and interactive https://earthengine.google.com/timelapse/ Timelapse is a global, zoomable video that lets you see how the Earth has changed over the past 32 years. It is made from 33 cloud-free annual mosaics, one for each year from 1984 to 2016, which are made interactively explorable by Carnegie Mellon University CREATE Lab's Time Machine library, a technology for creating and viewing zoomable and pannable timelapses over space and time. Using Earth Engine, we combined over 5 million satellite images acquired over the past three decades by 5 different satellites. The majority of the images come from Landsat, a joint USGS/NASA Earth observation program that has observed the Earth since the 1970s. For 2015 and 2016, we combined Landsat 8 imagery with imagery from Sentinel-2A, part of the European Commission and European Space Agency's Copernicus Earth observation program. Search, pan, or zoom around to begin exploring our new Timelapse, or even check out our YouTube highlights. To embed the timelapse viewer on your site, use the “Share or embed” button above. You can also create a timelapse tour that moves from one destination to another over time using the Timelapse Tour Editor. Timelapse is an example that illustrates the power of Earth Engine’s cloud-computing model, which enables users such as scientists, researchers, and journalists to detect changes, map trends, and quantify differences on the Earth's surface using Google’s computational infrastructure and the multi-petabyte Earth Engine data catalog. Data sources NASA Landsat Program, Landsat 4 (1984-1993), Landsat 5 TM (1984-2012), Landsat 7 ETM+ (1999-2013), Landsat 8 OLI (2013-2016), courtesy of the U.S. Geological Survey, Sioux Falls. Copernicus Sentinel Program, Sentinel 2A MSI Level 1C, European Union/ESA/Copernicus, 2015-2016. MOD09GA MODIS/Terra Surface Reflectance Daily L2G. NASA EOSDIS Land Processes DAAC, 2000-2016. MCD43A4 MODIS Terra+Aqua Nadir BRDF-Adjusted Reflectance 16-Day L3. NASA EOSDIS Land Processes DAAC, 2000-2016. ETOPO1 1 Arc-Minute Global Relief Model. National Geophysical Data Center, NOAA. Land Water Mask Derived from MODIS and SRTM L3. Version 5. NASA EOSDIS Land Processes DAAC. Hansen Global Forest Change v1.2 (2000-2014).
  7. Welcome to Ordos, China: The World’s Largest “Ghost City” http://earthengine.google.org/timelapse/player?c=http%3A%2F%2Fearthengine.google.org%2Ftimelapse%2Fdata#tour=DEBkDA1_knzDQs_bChina%27s%20largest%20ghost%20town%3A%20Ordos%20_CkDP1_knzDQs_bIn%20the%20early%202000s%2C%20Chinese%20government%20officials%20poured%20over%20%241%20billion%20into%20the%20development%20of%20the%20city_CkDG1_knzDQs_bis%20a%20marvel%20of%20urban%20planning%2C%20137-square%20miles%20of%20shining%20towers%2C%20futuristic%20architecture%20and%20pristine%20parks_BkDT1_knzDQs_bbut..%20Only%202%25%20of%20its%20buildings%20were%20ever%20filled%3B%20the%20rest%20has%20largely%20been%20left%20to%20decay..._Untitled_B http://www.thebohemianblog.com/2014/02/welcome-to-ordos-world-largest-ghost-city-china.html
  8. Hello everyone, I just saw a bad news for google earth enthusiastic, the panoramio service (geotagging pictures on google maps) is down, the service will be closed. https://www.panoramio.com/ Panoramio no longer available after November 4, 2016Tip: Link your Panoramio account with your Google+ account to automatically copy your photos to the Google Album Archive and continue to share your work in Google Maps. Back in 2014, we announced our intention to retire Panoramio in order to invest our efforts into improving photo-sharing experiences directly inside Google Maps. In response to your feedback, we postponed these plans and worked to add features to Maps that better support the level of engagement that you have enjoyed with Panoramio. Today, with photo upload tools in Google Maps and our Local Guides program, we are providing easy ways for you to share your photos with an active and growing community. As such, we’ve decided to move forward with closing down Panoramio. To make this transition easier, we’ll provide several options to continue sharing photos through other services. If you choose, you can also export all your data and take it somewhere else. If you have linked your Panoramio profile with a Google account, all your Panoramio photos will be copied to the Google Album Archive at full resolution after Panoramio goes away. These copied photos will not use any of your Google storage quota. Your Panoramio photos that appear in Google Maps will continue to appear in Maps, unless you delete them later from the Maps Contributions panel. Note: You must link your Panoramio profile with a Google+ account for your photos to be automatically copied. After November 4, 2016, you’ll continue to have access to your photos in Panoramio for a year, but you will no longer be able to add new photos, likes, or comments. Below, we’ve included resources to help you manage or export your data. Tip: Although you’ll no longer be able to create new accounts, upload your photos, comment or like other content in Panoramio after November 4, 2016, you’ll still have access to your photos and be able to export your data until November 2017. After that, if your Panoramio account is linked with a Google account, we'll copy your photos to the Google Album Archive so you can access them even after Panoramio is retired. Keep your photos in Album ArchiveIf you have a Google account linked with your Panoramio account, we will automatically copy your Panoramio photos to the Google Album Archive when Panoramio is retired in November 2017. You must link your profile before November 2017 for this to occur. Copied photos will not use any of your Google storage quota. Eligible images and your View Counts will be transferred into Google Maps and will be visible when you sign in to Maps and access the Contributions screen from the main menu. Images will only show in Google Maps if you have linked your profile with a Google+ account and you are attributing photos using your name (rather than Panoramio nickname). Export your photos to a local zip file For Panoramio users with Google accounts:Visit takeout.google.com and follow the instructions there. For Panoramio users who have not upgraded to a Google account:Sign in to www.panoramio.com. Go to your account’s settings page. Click the "Get photos" button under the Data Liberation heading (this is only visible to users with legacy Panoramio accounts; users with Google accounts must use takeout.google.com) Become a Local Guide to keep contributingTo keep adding photos to Google Maps and engage with a growing community of photographers, join the Local Guides programYou can earn points and unlock rewards for photos submitted with a Google account when they are linked to a point of interest or business. Many of your Panoramio photos may already be counted. Removing photos or deleting your accountIf you prefer to no longer share your photos with Google Maps, you can delete your Panoramio photos or your entire account at any time. If you haven't linked your Panoramio account with a Google account, your Panoramio account will be deleted automatically when Panoramio is retired after November 2017. You can also choose to delete your Panoramio account (and photos) immediately by logging in, opening "Settings", and clicking the "Delete your account" option. You can also navigate to this page directly by using this link. If you delete any photos (or delete your entire account) before Panoramio is retired in November 2017, that content will not be automatically copied to the Google Album Archive and will stop appearing in Google Maps. Terms of Service Privacy Policy Help
  9. Hi, here a link where you can get some information about OSM, and an animation with the last features modified or created by users.. http://osmlab.github.io/show-me-the-way/
  10. if you want to create your own video, simply use the http://timemachine.cmucreatelab.org/wiki/EarthEngineTourEditor for example : https://earthengine.google.com/timelapse/#tour=DECkDLW6ehXHJqof%20Naypyidaw%20is%20the%20capital%20city%20of%20Myanmar_CkDHW6ehXHJqofNaypyitaw%20is%20generally%20translated%20as%20%22royal%20capital%22_CkDSW6ehXHJqofNaypyidaw%20has%20a%20short%20history%2C%20construction%20starting%20in%202002_BkDgBW6ehXHJqof_Untitled_B
  11. http://landsat.gsfc.nasa.gov/wp-content/uploads/2016/10/Landsat_timeline2016.png
  12. SASPLANET for big areas (like 250km2) otherwise Google Earth Pro for small areas (10km2)
  13. Hello everyone, i just founded an internet page where all the MOOC with GIS topics are listed.. https://www.mooc-list.com/tags/gis
  14. Hello everyone, starting the 5th September 2016 a new specialization course "map the world with GIS" hosted on coursera will be available (for free without a certification, costly with certification).. https://www.coursera.org/specializations/gis Summary: Knowledge of Geographic Information Systems (GIS) is an increasingly sought after skill in industries from agriculture to public health. This Specialization, offered in partnership with ArcGIS developer Esri, will teach the skills you need to successfully use GIS software in a professional setting. You will learn how to analyze your spatial data, use cartography techniques to communicate your results in maps, and collaborate with peers in GIS and GIS-dependent fields. In the final Capstone Project, you will create a professional-quality GIS portfolio piece using a combination of data identification and collection, analytical map development, and spatial analysis techniques. Includes 1Fundamentals of GIS US$ 79 USD 2GIS Data Formats, Design and Quality US$ 79 USD 3Geospatial and Environmental Analysis US$ 79 USD 4Imagery, Automation, and Applications US$ 79 USD 5Capstone: Geospatial Analysis US$ 79 USD
  15. just a funny video putting the earth in relation with the universe http://video.corriere.it/ecco-quanto-siamo-piccoli-rispetto-all-universo/92fa7e58-5a9a-11e6-bfed-33aa6b5e1635?intcmp=video_wall_hp&vclk=videowall%7Cecco-quanto-siamo-piccoli-rispetto-all-universo
  16. The rise and fall of great world cities: 5,700 years of urbanisation – mappedamazing video here... article : https://www.theguardian.com/cities/2016/jun/27/rise-fall-great-world-cities-5700-years-urbanisation-mapped video.. https://www.theguardian.com/cities/video/2016/jun/27/watch-worlds-cities-rise-fall-nearly-6000-years-video
  17. Hi everyone, does anyone knows how to generate a digital surface model with some satellite imagery? it's possible to create a terrain from stereo imagery in ArcGIS? and with just f.ex. 3-5 images not stereo? References : https://en.wikipedia.org/wiki/Digital_elevation_model
  18. thanks art409, I like your answer
  19. a return will be always possible if the EU needs something from UK
  20. hi, can anyone share the Color Brewer Style for Arcgis? the internet page http://colorbrewer2.org/ doesn't gives anymore the link to the style.. http://www.personal.psu.edu/faculty/c/a/cab38/ColorBrewer/ColorBrewer_updates.html A guide How to install the style.. http://www.extension.iastate.edu/communities/sites/www.extension.iastate.edu/files/communities/PM2082-14e.pdf
  21. city engine tv has a lot of example / tutorials.. https://www.youtube.com/user/CityEngineTV http://desktop.arcgis.com/en/cityengine/latest/tutorials/introduction-to-the-cityengine-tutorials.htm
  22. Hi, there is this company called vricon how say they use satellite imagery (not stereo) in order to create a 3D model (DSM). They claim without any GCP the product they calculate has a good precision with 3m accuracy.. so how do they do it? http://www.vricon.com/technology/ http://www.vricon.com/wp-content/uploads/2015/12/Vricon_DSM_print.pdf
  23. hi, why do you use landsat 7 and not landsat 8? and with witch software? here you can see the band combination for landsat 7 and 8 http://landsat.usgs.gov/L8_band_combos.php http://web.pdx.edu/~emch/ip1/bandcombinations.html so the band combination for TM is 1-4-7 in Landsat 7, the combination can be 7-6-4 http://www.harrisgeospatial.com/company/pressroom/blogs/tabid/836/artmid/2928/articleid/14305/the-many-band-combinations-of-landsat-8.aspx you load every single band in ArcGIS and you do a combination then do a classification (supervised or unsupervised) Two major categories of image classification techniques include unsupervised (calculated by software) and supervised (human-guided) classification. Unsupervised classification is where the outcomes (groupings of pixels with common characteristics) are based on the software analysis of an image without the user providing sample classes. The computer uses techniques to determine which pixels are related and groups them into classes. The user can specify which algorism the software will use and the desired number of output classes but otherwise does not aid in the classification process. However, the user must have knowledge of the area being classified when the groupings of pixels with common characteristics produced by the computer have to be related to actual features on the ground (such as wetlands, developed areas, coniferous forests, etc.). Supervised classification is based on the idea that a user can select sample pixels in an image that are representative of specific classes and then direct the image processing software to use these training sites as references for the classification of all other pixels in the image. Training sites (also known as testing sets or input classes) are selected based on the knowledge of the user. The user also sets the bounds for how similar other pixels must be to group them together. These bounds are often set based on the spectral characteristics of the training area, plus or minus a certain increment (often based on "brightness" or strength of reflection in specific spectral bands). The user also designates the number of classes that the image is classified into. Many analysts use a combination of supervised and unsupervised classification processes to develop final output analysis and classified maps. (source : https://articles.extension.org/pages/40214/whats-the-difference-between-a-supervised-and-unsupervised-image-classification)