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Changelog

Changelog of i.grid.correl.atcor.py releases

Previous releases below were published via Dropbox (see download links below). Following releases would be released in github project https://github.com/tomas4/grid-correl-atcor together with complementary scripts. Scripts here on Github undergone substantial changes since latest Dropbox release. The chages could be tracked via Github logs now.

DATE: 2015-07-23 VERSION: 0.92b

Download: https://www.dropbox.com/s/g8v2edcdihr4hsu/i.grid.correl.atcor_0.92b.tar.gz?dl=0

Beta version, compatible with GRASS 7 New features:

  • OrtInformation messages now contain the input file name and mapset path in the first few lines.
  • hogonal regression - new method of regression, made default.

Fixes:

  • Removed the stddev_mean and combined methods of regression, these were wrong.

Other changes:

  • The regression parameter now has options least_sq and orthogonal, for "ordinary least squares" nad "orthogonal regression" methods of linear regression.
  • .py suffix in the command file name reintroduced, since it is needed on Windows.
  • (internal) Some code streamlining (mostly simplification of second stage mask creation, removal of old comments and commented out pieces of code).

Known isssues:

  • The script does not work for the author in current versions of WinGRASS 7 (tested with 7.0.0 and 7.0.1 RC1, please report if it does for you) due to remaining issues in these Windows versions of GRASS. Works fine on Linux and probaly OSX. This is also true for the previous script version 0.91b.

DATE: 2015-04-08 VERSION: 0.91b

Download: https://www.dropbox.com/s/fc3s4b697g3vnhf/i.grid.correl.atcor_0.91b.zip?dl=0

Beta version, first release compatible with GRASS 7 New features:

  • GRASS 7 compatibility (no longer compatible with GRASS 6.4)
  • New method to compute the regression line (based on stdev and mean of input bands)

New options:

  • regression - chooses method of computing regression parameters (least_squares,mean_stdev,combined).

Fixes:

  • The WxGUI option to add created map to layer tree now works.
  • The resulting corrected band now should cover the whole area of input bands overlap within region bounds (no rounnded corners anymore).
  • Other changes:
  • minR parameter default relaxed to 0.8.
  • Masks parameter moved to optional (advanced) parameters.
  • Prints number of tiles used for regression computation.
  • (internal) r.sum (removed from GRASS 7) replaced by r.univar for counting valid pixels within tile.
  • Removed .py suffix in the command name.

DATE: released 2015-02-12 as 0.9a, re-released with updated documentation 2015-02-23 as 0.9b

VERSION: 0.9b, 0.9a Downloads: https://www.dropbox.com/s/cqykxrjja0zo9yc/i.grid.correl.atcor_0.9b.zip?dl=0 https://www.dropbox.com/s/2urin9zw7k3clze/i.grid.correl.atcor_0.9a.zip?dl=0

  • Internal alpha version, later first public release together with short html documentation with workflow description.
  • New features: Interpolation methods bilinear, bicubic (using v.surf.bspline) and their parmeters, IDW interpolation method dropped. Switch (k) to keep temporary files.
  • New options: interpolation, lamda_i, k
  • Other changes: Advanced parameters section in the GUI, with interpolation parameters. Some default values of parameters altered.

DATE: 2014-01-20 VERSION: 0.7a

  • Unfinished alpha, internal.
  • New features: Raster(s) to mask out invalid/changing pixels. Removal of temporary files.
  • New options: masks

DATE: 2014-01-16 VERSION: 0.6a

  • Unfinished alpha, internal. First version producing an corrected image. IDW interpolation not good.
  • New features: Minimal correlation coefficient R to accept, storing regression parameters to vector point file attributes, interpolation of the regession parameters into rasters (using v.surf.idw), computation of the output map.
  • New options: minR

DATE: 2014-01-14 VERSION: 0.5a

  • Unfinished alpha, internal. Incomplete.
  • Implemented: Grid size and creation, parsing the tiles, minimal number of valid pixels in grid tile, computation of regression parameters (just reported on command line), storing and restoring region.
  • Options: input, reference, output, gridsize, pixels

Development started: 2013-11-22