RONCC/Geografic-Information-System @ previewbranch_8_0

Vaclav Petras bac519d645 Update to Black 21.5b1 (#1605)		%!s(int64=4) %!d(string=hai) anos
..
Makefile	0c83c976b2 Move grass package content to directory named grass (#1356)	%!s(int64=4) %!d(string=hai) anos
README	0c83c976b2 Move grass package content to directory named grass (#1356)	%!s(int64=4) %!d(string=hai) anos
__init__.py	0c83c976b2 Move grass package content to directory named grass (#1356)	%!s(int64=4) %!d(string=hai) anos
images2avi.py	1aab3bbcff Apply Black to grass package, use Python 3 style everywhere (#1382)	%!s(int64=4) %!d(string=hai) anos
images2gif.py	bac519d645 Update to Black 21.5b1 (#1605)	%!s(int64=4) %!d(string=hai) anos
images2ims.py	22dcea97b9 Python scripts: remove UTF-8 coding line (#1461)	%!s(int64=4) %!d(string=hai) anos
images2swf.py	bac519d645 Update to Black 21.5b1 (#1605)	%!s(int64=4) %!d(string=hai) anos
operations.py	1aab3bbcff Apply Black to grass package, use Python 3 style everywhere (#1382)	%!s(int64=4) %!d(string=hai) anos

		
				README
			
				General
=======

This is a library for manipulating (non-geospatial) images in GRASS GIS.

The images2*.py files are a part of visvis library [1], specifically
visvis.vvmovie. The files are from the visvis-1.8 version.

[1] https://code.google.com/p/visvis/

Changes to visvis
=================
In images2avi, the image format for temporary files is changed
from JPG to PNG, to improve the resulting AVI. This makes the size larger,
however the JPG format is unsuitable for maps in general.

--- imaging/images2avi.py	2013-11-09 21:46:28.000000000 -0500
+++ visvis-1.8/vvmovie/images2avi.py	2012-04-25 17:15:40.000000000 -0400
@@ -79,7 +79,7 @@
     
     # Determine temp dir and create images
     tempDir = os.path.join( os.path.expanduser('~'), '.tempIms')
-    images2ims.writeIms( os.path.join(tempDir, 'im*.png'), images)
+    images2ims.writeIms( os.path.join(tempDir, 'im*.jpg'), images)
     
     # Determine formatter
     N = len(images)
@@ -93,7 +93,7 @@
     
     # Compile command to create avi
     command = "ffmpeg -r %i %s " % (int(fps), inputOptions)
-    command += "-i im%s.png " % (formatter,)
+    command += "-i im%s.jpg " % (formatter,)
     command += "-g 1 -vcodec %s %s " % (encoding, outputOptions) 
     command += "output.avi"
     
Questions
=========
Should we make the visvis files PEP8 compliant? This would make
merging of possible changes from visvis more difficult.