-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Il 02/05/2013 11:28, Victor Gonzalez ha scritto:
> We already started analyzing the task and we have some questions. First, we > are going > to made a fork of the current animove plugin repository [1] and when we > finish we'll > do a pull request. Is that ok with you? Anyone has a better idea? I think you could take the lead, no need for the pull. Francesco? > Regarding the kernel analysis algorithm, we found that the gaussian_kde class > in > scipy [2] has a set_bandwidth method in order to set the bandwidth of the > method as a > simple scalar. But this is only available from 0.11.0 version. Which version > of scipy > we assume will be installed in the distribution? Please check the one available in osgeo4w. In Debian we have 0.10.1+dfsg2-1. Maybe you can implement it conditionally, so that it will be available when scipy will be upgraded. > Also, that gaussian_kde class allows 'scotts' and 'silverman' method to > calculate the > bandwidth, but no LSCV or is available. The only way to have it working is to > set the > bw_method as a callable and implement the LSCV bandwidth ourselves. The > problem is > that we are not experts in statistics and we don't know how to implement it. > We > searched for the formula but it's quite hard to understand and implement at > first. Do > you know of any python implementation? I would avoid implementing stuff locally, unless it's a relatively simple extension to numpy/scipy. Always better to try to find another py library, or cooperate upstream with scipy devs. > Finally, the kernel analysis is supposed to create several probability > rasters (one > for each animal), right? The problem is that we don't know the number of > outputs > beforehand, so we cannot specify them in the SEXTANTE algorithm. A solution > is to > create the rasters in a folder (specified by the user) and then add it to > QGIS by > hand. Is that ok? Partly: I think there should be a way to add them all. Please check with Victor Olaya, it would be better to add the function to Sextante core if necessary. All the best. - -- Paolo Cavallini - Faunalia www.faunalia.eu Full contact details at www.faunalia.eu/pc Nuovi corsi QGIS e PostGIS: http://www.faunalia.it/calendario -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAlGCN3gACgkQ/NedwLUzIr4ZKwCfRKtqQICDLbPbPKqLhMzCwQ3X 5sEAnjZLTR7Tkk4QP9UtyB6Z2naM5PiP =tmjK -----END PGP SIGNATURE----- _______________________________________________ AniMov mailing list [email protected] http://lists.faunalia.it/cgi-bin/mailman/listinfo/animov
