How to mosaic several spatially referenced raster tiles or arrays

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Sagar Parajuli 2021-8-8

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https://ww2.mathworks.cn/matlabcentral/answers/894602-how-to-mosaic-several-spatially-referenced-raster-tiles-or-arrays

评论： KSSV 2021-8-8

I have several geolocated small tiles (obtained from satellite data) which I want to combine to conduct a global-scale analysis/plotting. What would be the best way to combine them into a single mosaic? What I want to do is similar to the example posted below, but I have several tiles, not only two, and they are not adjacent. Please advise a efficient way to combine the tiles into a single dataset. I have the original tiles in the form of arrays as well so I can use both cells and arrays. Each tile/array has associated lat/long arrays.

https://www.mathworks.com/help/map/mosaic-spatially-referenced-rasters.html

Thank you!

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KSSV 2021-8-8

Do you have (x,y) i.e. locations of the data?

Sagar Parajuli 2021-8-8

Yes, I have lat/long (degrees) arrays associated with the data

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KSSV 2021-8-8

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https://ww2.mathworks.cn/matlabcentral/answers/894602-how-to-mosaic-several-spatially-referenced-raster-tiles-or-arrays#answer_763212

Convert all your tile data into three column data i.e. (x,y,z) and then use griddata. Read about gridata. If you are not able to get it share the data.

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Sagar Parajuli 2021-8-8

Thanks, this is promising. I will have to use a loop to process all the data for the entire year (365 days) but I believe I can do that. This is very helpful.