Hi List,
What is the suggested RasterIO usage for reading many small requests
repeatedly?
Current Process:
1. for each (x,y) coordinate in collection (10,000+)
i. get the raster tile
ii. open a dataset - Readonly & OpenShared (1-4 tiles)
iii. get raster band 1
iv. calculate the (x,y) cell location
v. read the raster (2x2 array)
vi. apply bi-linear interpolation
vii. return value
Is there an optimal block size for this type of processing?
Raster Info
Format=GTiff
Pixel Size=2,5 or 10
Size=2502x2502,1002X1002 or 502x502
Band 1 Block Size=2502x1,1002x2 or 502x4
DataType=Float32
File Size=25MB,4MB or 1MB
MaxCache=400
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