[GRASS-user] Best Raster storage format for huge number of read only access?

Rainer M Krug Rainer at krugs.de
Mon Nov 2 03:02:29 PST 2015


I am on an OS X El Capitan.

I have done 530 simulations and each resulted in about 2600 raster maps
(all same projection, three areas).

What is the best way of storing these in a space efficient way and to
have them accessible read-only? I have them at the moment in a grass
database and thought of putting these into a squashfs which should
work, but after two days of compressing (and only having compressed
30% - slow speed presumably due to huge number of files) I gave up.

I would like to avoid having to install postgresql as I tried it before
(several years ago) and given up due to it's complexity.

I will analyse the maps in R, so any storage backend which I can use
From R and GRASS would be OK.

Any suggestions?


Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel :       +33 - (0)9 53 10 27 44
Cell:       +33 - (0)6 85 62 59 98
Fax :       +33 - (0)9 58 10 27 44

Fax (D):    +49 - (0)3 21 21 25 22 44

email:      Rainer at krugs.de

Skype:      RMkrug

PGP: 0x0F52F982
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