[Kst] [Kst-plot/kst] 6ec4b5: Improve image autoscale colorscale algorithm.

[Barth Netterfield]

  Branch: refs/heads/master
  Home:   https://github.com/Kst-plot/kst
  Commit: 6ec4b5d050cbfd83e96686eaee66e22dcc9c1b92
      https://github.com/Kst-plot/kst/commit/6ec4b5d050cbfd83e96686eaee66e22dcc9c1b92
  Author: Barth Netterfield <netterfield at astro.utoronto.ca>
  Date:   2015-11-05 (Thu, 05 Nov 2015)

  Changed paths:
    M src/kst/main.cpp
    M src/libkst/matrix.cpp
    M src/libkstapp/plotitem.cpp

  Log Message:
  -----------
  Improve image autoscale colorscale algorithm.


  Commit: 833d33a4794aa7d715c637eb0f85d8a9c3f07172
      https://github.com/Kst-plot/kst/commit/833d33a4794aa7d715c637eb0f85d8a9c3f07172
  Author: Barth Netterfield <netterfield at astro.utoronto.ca>
  Date:   2015-11-05 (Thu, 05 Nov 2015)

  Changed paths:
    M src/kst/main.cpp
    M src/libkst/matrix.cpp

  Log Message:
  -----------
  use rand() rather than random().


  Commit: 6b7ed8f8d46eb25813f4d2017a1d37e9eb5b98f6
      https://github.com/Kst-plot/kst/commit/6b7ed8f8d46eb25813f4d2017a1d37e9eb5b98f6
  Author: Barth Netterfield <netterfield at astro.utoronto.ca>
  Date:   2015-11-05 (Thu, 05 Nov 2015)

  Changed paths:
    M src/libkstmath/image.cpp

  Log Message:
  -----------
  Make sure NaNs are transparent in images.


Compare: https://github.com/Kst-plot/kst/compare/ac9f7b9807af...6b7ed8f8d46e