[SoC] GSoC 2021 - Week-3 Report: A new render type On the fly Raster Calculator for QGIS

[Francesco Bursi]

Hello everyone,
I'm sharing with you the weekly improvment on my project for the third week of coding for the period from 21th June to 27th June. You can find in [1] the main wiki page of the project and in [2] the branch of the forked repo in which you can find all the change I'm doing.

Taks for this week

  *   Refine the block() method in order to compute some easy map algebra with hardcoded data and an hardcoded expression;
  *   Add some specific function in the unit test in order to inspect the values of the computed raster of the code;
  *   Study of the existing parsing and decoding method for the URI and study QUrl in particular;
  *   Pseudocode t​he methods for the parse and decode of the URI;

Plans for next week:

  *   Develop the methods in some class of qgis_core to parse and to encode the uri that will be given to my provider (that was moved from qgis_core to providers);
  *   Refine the methods of the prototyped provider in order to add some check on the parameters given by the uri;

At the moment I'm not blocked on anything in particular. Don't hesitate to ask me for feeback or more specific clarification.

[1] https://wiki.osgeo.org/wiki/A_new_render_type_On_the_fly_Raster_Calculator_for_QGIS#7th_June_-_13th_June
[2​] https://github.com/Franc-Brs/QGIS/tree/VRProvider

My best regards,
Francesco Bursi

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