Ciao Stefan! 2018-05-20 21:44 GMT+02:00 Stefan Blumentrath <[email protected]>:
> Ciao Roberta, > > Thanks for the comprehensive report! > > One general hint: Even if the drawback is complex expression(s) I would > suggest merging r.mapcalc calls. That can improve performance quite a bit > (less data read and written) and reduces the need to manage temporary data. > > See also: https://grass.osgeo.org/ > <https://grass.osgeo.org/grass74/manuals/r.mapcalc.html#multiple-computations> > grass74 > <https://grass.osgeo.org/grass74/manuals/r.mapcalc.html#multiple-computations> > /manuals/r.mapcalc.html#multiple-computations > <https://grass.osgeo.org/grass74/manuals/r.mapcalc.html#multiple-computations> > > If you don't need the first_... To fifth_... files later, I would even say > everything in 3rd_procedure.py until r.to.vect could be solved in a single > mapcalc operation... > Thank you so much for your hints! I'm trying to clean up the code without creating a too complex expression..I hope to share the new version by this evening or tomorrow at the latest. > > Kind regards and again thank for your GSoC work, > Stefan > > Thanks again!! Roberta > > ------------------------------ > *From:* grass-dev <[email protected]> on behalf of > Roberta Fagandini <[email protected]> > *Sent:* Sunday, May 20, 2018 4:33:57 PM > *To:* [email protected]; GRASS developers list > *Subject:* [GRASS-dev] GSoC 2018 report week 01 - GRASS GIS module for > Sentinel-2 cloud and shadow detection > > Hi all! > I'm Roberta Fagandini and I'm working on my GSoC project, a GRASS GIS > module for Sentinel-2 cloud and shadow detection. > This is my report for the first week of coding. > Since my progress has been a bit faster than expected I have already > discussed with my mentors about further additions to the project. Therefore > I have already updated my wiki page [0] changing the timeline. In this way, > I will be able to release a more complete module. > > *1) What did I complete this week?* > > - Checked the prototype version of the algorithm for cloud and shadow > detection > - Tested it > - I better studied the documentation of the GRASS Python Scripting > Library and started coding the GRASS python script following the > workflow schema prepared during the bonding period [1] > - Coded the 'data preparation' phase > - Coded the clouds detection procedure > - Added this first part of python script to my GitHub repository [2] > - Discussed with my mentors about further additions > - Discussed with the community about testing phase. I received some > feedback and some developers stepped forward to help me in testing the > algorithm > - Shared progress with the community > > Unfortunately, I wasn't able to code on Thursday because of a PhD meeting > with my supervisor. > > *2) What am I going to achieve for next week?* > > - Finish the translation of the algorithm in a basic python script > adding the shadows detection procedure and the steps for checking and > cleaning the final outputs (see [1] for details) > - Improve the python script so as to have a "light" working python > script (manage temporary file, clean up the code, etc.) > - Test it and fix bugs > - Start implementing the GUI > > *3) Is there any blocking issue?* > No at the moment. > > Best wishes, > Roberta > > [0] https://trac.osgeo.org/grass/wiki/GSoC/2018/CloudsAndShadowsDetection > [1] https://drive.google.com/file/d/1KYEKvNBurBFHw1xUTLjM0PW > 80Z-7br81/view?usp=sharing > [2] https://github.com/RobiFag/GRASS_clouds_and_shadows >
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