|
I'm wanting to show a sequence of fire "hotspots' in northern Thailand over several years, with 5 days at a time visible in the frame. Source data is satellite VIIRS (NASA website) with 375m pixels. I have downloaded data files, not trying to use an on-line source to create this. Data is a shapefile which I will visualize as points. Table columns include Lat, Long, acquisition time/date, and (infra-red) intensity. I will use intensity to scale size of dots and use colouring for time, eg red for current day fading to black for 5 days, on a rolling sequence so the fires literally look like they flare up then die out. I'm hoping to see landscape patterns and pathways of fire travel. 375m pixel is pretty coarse scale but based on static views so far, I think it will still be informative Full country data file for 5 years is ~4m rows, but I can narrow that down considerably by doing in regions. I'm thinking I can probably do this in Excel with VBA macros and an x-y chart, but hoping M9 users have done similar with better methods. (i found an old thread with someone wanting to do something simlar, a video with seal level changes, but there were no replies in the thread)
|