How to mosaic Tiff files using R?

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I have 1600 images in Tiff format which need to be mosaiced using R.

Each 3 or 4 images need to be mosaiced together.

Using the below pattern, we can recognize which images must be mosaiced into one tile

Tiff files names are like this:

MOD05_L2A200908918300512010336104534_grid_Cloud_Mask_QAMOD05_L2A200908918350512010336105017_grid_Cloud_Mask_QAMOD05_L2A200909019250512010336101736_grid_Cloud_Mask_QAMOD05_L2A200909019300512010336101159_grid_Cloud_Mask_QATheir names has this pattern:

MOD05_L2A2009###********************_grid_Cloud_Mask_QAAccording to those three ### we can recognize those Tiff files are belong to a specific day, and must be mosaiced into a new tile.

All other ****** characters are not important for us.

FYI:

Working Directory is D:/test .

Tiff files (input) are unsigned-8bit.

Mosaiced files must be the same type, as input.

The output mosaiced images must have this name:

MOD05_L2A2009###CQA.

I would be very grateful if an R expert could help me to do mosaicing in one shot, using R.

Thanks in advance.



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