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Copy/Paste style should not override band number #23694
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Author Name: Giovanni Manghi (@gioman)
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Author Name: Jürgen Fischer (@jef-n)
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Author Name: Giovanni Manghi (@gioman) End of life notice: QGIS 2.18 LTR Source: QGIS 3.4 has recently become our new Long Term Release (LTR) version. This is a major step in our history – a long term release version based on the massive updates, library upgrades and improvements that we carried out in the course of the 2.x to 3x upgrade cycle. We strongly encourage all users who are currently using QGIS 2.18 LTR as their preferred QGIS release to migrate to QGIS 3.4. This new LTR version will receive regular bugfixes for at least one year. It also includes hundreds of new functions, usability improvements, bugfixes, and other goodies. See the relevant changelogs for a good sampling of all the new features that have gone into version 3.4 Most plugins have been either migrated or incorporated into the core QGIS code base. We strongly discourage the continued use of QGIS 2.18 LTR as it is now officially unsupported, which means we’ll not provide any bug fix releases for it. You should also note that we intend to close all bug tickets referring to the now obsolete LTR version. Original reporters will receive a notification of the ticket closure and are encouraged to check whether the issue persists in the new LTR, in which case they should reopen the ticket. If you would like to better understand the QGIS release roadmap, check out our roadmap page! It outlines the schedule for upcoming releases and will help you plan your deployment of QGIS into an operational environment. The development of QGIS 3.4 LTR has been made possible by the work of hundreds of volunteers, by the investments of companies, professionals, and administrations, and by continuous donations and financial support from many of you. We sincerely thank you all and encourage you to collaborate and support the project even more, for the long term improvement and sustainability of the QGIS project.
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Author Name: Mike Taves (Mike Taves)
Original Redmine Issue: 15772
Affected QGIS version: 2.18.0
Redmine category:unknown
With a multiband raster, rendered using a singleband pseudocolor type, copy/paste style does not work between bands, as the band number is copied as part of the style. A singleband pseudocolor type implies that the style is independent of the raster band number. This type should be able to be copied to any raster band number. Furthermore, a band number is much more of a data source than it is a style, as different bands have different data.
Steps to recreate or demonstrate the issue in QGIS 2.18 via OSGeo4W:
There are two unexpected results in the second raster, viewed in the Style Properties:
This effectively makes it impossible to copy a singleband pseudocolor type between different bands, since the band number is overwritten, and the style is lost when band number is changed.
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