#METEOEARTH 3D VIEW UPDATE#
After getting the latest URL, you can update the variable "WMS_URL" in gui.js to make WMS layer display work again.“Amazingly reliable seven day forecasts…we wouldn’t hesitate to recommend this app.” – Mac Life ***** Click the data file of the date you want (mine is 20190916_0000_000), then the WMS URL for this file will be showed in the web page. Probably the WMS URL changed, you may check the latest WMS URL by accessing NOAA's TDS server of GFS Analysis. It can tell you the input and output of your code. For the moment, I suggest to use Spector.js to figure out what is happening with your WebGL code. Unfortunately, there is no easy way to debug WebGL code, and I can't find any debugging tool for setting breakpoints in WebGL.
#METEOEARTH 3D VIEW CODE#
I adopt the WebGL code and the demo is not working now World terrian can not be loadedĬesium requires access token of Cesium ION to access the WorldTerrain data, you can register an account to acquire a valid token, and use it according to the document. Open the development tools in your browser and refresh the website, then check if your browser is downloading the data in a very slow speed. Please check the speed of your network connection. There is no particle or world terrian after starting the demo Check the "Supported Extensions" section, below extensions are at least required: If you got into trouble on other device(for example, mobile phone), you can check your WebGL implementation in WebGL report.
If possible, you should run this demo in Chrome on PC, because I did not test it in other browser or mobile device. Troubleshoot This demo does not work on my device The panel is made with dat.gui library, you can read its document and modify the gui.js as you need. This problem is similar with Z-fighting, the cause is depth buffer does not have enough precision. Why are some particles not overlapped by higher terrain?īecause sometimes the depth test for particles is not accurate enough. Particles lower than the terrain will be overlapped. "particleHeight" is the distance from the surface of earth. You can also use this script once you setup the 'NCOPath' and 'fileToProcess' variables in the script. I wrote a PowerShell script(in the 'Util' folder) to extract and transform the data by making use of NetCDF Operator. The original data is in GRIB2 format and I used toolsUI to convert the GRIB2 file to a NetCDF V3 file.Īfter the conversion I used NetCDF Operator for further process of the NetCDF data. The demo data is from NOAA Global Forecast System. However, you should ensure that the data return from your JSON loading function should have the same structure as that of function loadNetCDF. You can add a function for loading JSON data in the dataProcess.js, and call your JSON loading function in the exposed function loadData. You must use NetCDF version 3 (NOT 4, NOT other file types like HDF or GRIB) fileįor more detail, use Panoply to read the "data/demo.nc" file What to do if I want to use JSON file instead of NetCDF?.netcdfjs will read the data row by row, so array(0) is (lon 0, lat -90).Use small (less than 100MB) NetCDF file if possible, or your browser may crash."lev", "lat", "lon" are names of dimensions, and "min", "max" are the attributes of the variable.U (lev, lat, lon) V (lev, lat, lon) Don't forget to change the filename in the source code ("gui.js").The NetCDF file is in the "data" folder, it should contains below variables: If you have VSCode installed, I recommend to intall the "liveserver" extension. Just create a HTTP server for the "index.html" file in the "Cesium-3D-Wind" folder.
#METEOEARTH 3D VIEW HOW TO#
More detail is in this blog post: GPU Powered Wind Visualization With Cesium Q&A How to start the application? Visualize the wind on earth, powered by Cesium JS.
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