4/15/2023 0 Comments Solar ash gif![]() As the canvas element is pixel-based, any content change usually requires a full redraw of all chart components, each being re-described and/or re-generated in your own Javascript code. Thus, for the kinds of animated 2D charts I need, SVG seems to have much more optimisation potential than using a HTML5 canvas element. The actual rendering of that cached element is then done by a much faster lower-level process (OpenGL/GPU and the SVG engine respectively). ![]() Any complex calculations in Javascript need only be done once to build up each visual component, or to rebuild if it physically changes. The core ideas when working in both are actually pretty similar - building up a set of visual components that are cached and rendered separately (OpenGL vertex buffer objects and SVG elements respectively). The marriage of WebGL for 3D visualisation and SVG for 2D data presentation also turns out to be a pretty happy one. Sure this was on an i7 processor, but it meant that the core technologies were not going to be the kind of bottleneck that I thought they’d be.Īs it turned out, there was scope for some pretty fundamental optimisations, so now it’s even quick enough on an iPad as well as most of my old Android tablets. I’m actually quite stunned as, even before any optimisation whatsoever, I found that I could build and rebuild the entire Sun-path mesh on every change in pretty well real time. This started out as an experiment to see just how responsive I could make the generation and display of 3D Sun-path diagrams and shadow projections using JavaScript and WebGL. You can set the location using the map by either dragging the locator icon around or clicking in the position you want. You can also use both the popover buttons and information panels located in the top-right to set the date, time and location. It should be fast enough to update in pretty close to real-time as you drag the locator within the map or the date/time in the day-length chart. The aim was to clearly illustrate the relationship between geographic location and the annual Sun-path. The SVG chart defaults to showing the annual variation in day-length, but you can also select an analemma chart or several different types of 2D Sun-path diagram. Imagery from GOES-18 during the post-launch testing phase should be considered preliminary and non-operational.This app connects an interactive Google World Map to a 3D Sun-path diagram, shadow map generator and a 2D SVG chart displaying a range of solar information. ![]() ![]() NOAA plans for GOES-18 to replace GOES-17 as GOES West in early 2023. GOES-18 will assist GOES-17 with GOES West operations in late summer 2022 and again in early fall. The new design uses a simpler hardware configuration that eliminates the filters that are susceptible to debris. The ABI was redesigned for GOES-18 to reduce the likelihood of future cooling system anomalies. The ABI cooling system is performing well, with no signs of the issue that affects its sister satellite, GOES-17. GOES-18 is currently undergoing post-launch testing, validation and calibration of its instruments and systems to prepare it for operations. Fog blanketed parts of Chile in South America, and clouds and some thunderstorms formed along sea breezes in the Yucatan and south Florida. Farther west in New Mexico, strong winds resulted in large areas of blowing dust and expansion of large wildfires. Storms across east Texas produced large hail, strong wind gusts, and tornadoes. Recently, GOES-18 observed a number of weather events, environmental phenomena, and striking views of our planet.
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