[QGIS-Developer] Proposed upgrades to the field calculator

[Tim Sutton]

Those sound like good changes to me Ethan.

Regards

Tim

On Fri, May 6, 2022 at 6:21 PM Ethan Snyder via QGIS-Developer <
qgis-developer at lists.osgeo.org> wrote:

> Hello Devs:
>
>         I would like to propose some changes/upgrades to the field
> calculator. Please let me know your thoughts and suggestions.
>
>         -- Primary/Major Changes --
>
>         1. Make the Field Calculator window non-modal
>                 * This will allow 2-6 to become practical
>                 * Allows users to modify feature selections
>
>         2. Add a dropdown to the top of the window to select a layer
>                 * Similar to the Layer Styling window (the floating &
> dock-able panel)
>                 * Limited to vector layers
>                 * Defaults to the currently selected layer (defaults to an
> empty option on top if not vector)
>
>         3. Rename "Ok" button to "Apply" and rename "Cancel" button to
> "Close"
>                 * This allows users to keep the field calculator window
> opened for multiple edits
>                 * Use cases would be:
>                         - Running the same or similar expression on
> multiple fields
>                         - Assuming #2, running the same of similar
> expression on multiple layers
>                         - Combination of the above 2
>
>         4. Change the QGIS UI toolbar button for Field Calculator to a
> toggle button
>
>         5. Add checkbox to show/hide fields that are hidden in the editor
> widget
>                 * Per the comment here:
> https://github.com/qgis/QGIS/blob/0aa409b4c67fd5f0dbc31efb3b5314c3f36b19f1/src/gui/vector/qgsfieldcalculator.cpp#L507-L509
>                 * Allows showing/hiding fields that are hidden without
> having to change the editor widget settings
>                 * Useful for needing to reset or bulk-change label
> placements overrides (i.e. adding 90 degrees to all non-null label
> rotations)
>
>         6. *Optional* Make the Field Calculator window a dock-able panel?
>                 * May make more sense for ultra-wide screens, or with the
> function and docs part hidden
>                 * Requires #4
>
>
>         -- Secondary/Minor Changes --
>
>         7. Make it more obvious when field calculator is running against a
> selection
>                 * I've been bitten by this when I didn't realize it was
> using a selection, or I forgot to select a few features
>                 * Maybe have this checkbox on the bottom close to the
> "Ok/Apply" button?
>
>
>         I believe these changes will help advance QGIS more into the "Data
> Science" field with being able to work with the data table(s) more
> efficiently.
>
> Thank you for your time,
>
> Ethan Snyder
> GIS/GPS Technician
> Remington & Vernick Engineers, Inc.
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-- 
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​

Tim Sutton
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Tim is a member of the QGIS Project Steering Committee
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