qgis
North Arrow in Print Layout disappears when resize mode set to 'Zoom and Resize Frame' and map frame has rotation
When I add a North Arrow in a Print Layout and set its resize mode to 'Zoom and Resize Frame' and its linked map frame has a rotation, then if I save the QGZ, exits QGIS and reopen the QGZ, the north arrow no longer displays in the layout. The object is still listed in the items but it does not display on the page (where it used to be). When I look at the position of the north arrow, it is set with 999999.0 in the values :
Here is a saved QGZ (inside a zip) where I already did the steps described below (1 to 6).
How to Reproduce
- Create a new QGIS document (leave it empty)
- Create a new print layout
- Add a map then a north arrow
- Add some rotation to the map
- Set the resize mode of the arrow to 'Zoom and Resize Frame'
- Save and exit
- Reopen the QGZ and the layout.
- Where is the north arrow??
QGIS and OS versions
I am using QGIS 3.14 on macOS 10.14.
| QGIS version | 3.14.0-Pi | QGIS code revision | 9f7028fd23 |
|---|---|---|---|
| Compiled against Qt | 5.12.3 | Running against Qt | 5.12.3 |
| Compiled against GDAL/OGR | 2.4.1 | Running against GDAL/OGR | 2.4.1 |
| Compiled against GEOS | 3.7.2-CAPI-1.11.2 | Running against GEOS | 3.7.2-CAPI-1.11.2 b55d2125 |
| Compiled against SQLite | 3.28.0 | Running against SQLite | 3.28.0 |
| PostgreSQL Client Version | 11.3 | SpatiaLite Version | 4.3.0a |
| QWT Version | 6.1.4 | QScintilla2 Version | 2.11.1 |
| Compiled against PROJ | 5.2.0 | Running against PROJ | Rel. 5.2.0, September 15th, 2018 |
| OS Version | macOS Mojave (10.14) | ||
| Active python plugins | FreehandRasterGeoreferencer; firstaid; profiletool; quick_map_services; QGIS3-getWKT; QuickWKT; qgis-maptiler-plugin; plugin_reloader; valuetool; processing; db_manager; MetaSearch; CustomToolBar |
Confirmed on Linux (Ubuntu 20.04) that the North Arrow moves / disappears from the print canvas when 'Zoom and Resize Frame' is selected together with 'Sync with Map'.
The issue does not seem to occur for other Resize Modes. Also, if 'Sync with Map' is not selected and 'Image Rotation' is provided manually, it looks like this issue does not occur.
Also confirmed on Windows 10.
A current work-around is to use the marker.
Also confirmed on Windows 10 in the last LTR Version 3.16.5.
The issue occurs in both .qgs and .qgz project files. The cause is probably that nan is returned and stored in the projectfile:
<LayoutItem uuid="{435ed10e-d0f8-436b-abc5-bcfc130a9981}" frameJoinStyle="miter" positionLock="false" outlineWidthM="0.3,mm" zValue="1" itemRotation="0" svgBorderWidth="0" referencePoint="0" positionOnPage="nan,nan,mm" file="wind_roses/WindRose_01.svg" groupUuid="" northMode="0" type="65640" frame="false" excludeFromExports="0" svgBorderColor="255,255,255,255" visibility="1" size="nan,nan,mm" opacity="1" pictureWidth="nan" anchorPoint="0" mapUuid="{5db86f59-fd5f-47d6-a544-9fb0048f365b}" templateUuid="{435ed10e-d0f8-436b-abc5-bcfc130a9981}" northOffset="0" id="Nordpfeil" mode="0" position="nan,nan,mm" svgFillColor="0,0,0,255" background="false" blendMode="0" resizeMode="3" pictureHeight="nan" pictureRotation="10">
(Extract from the project file (xml) after saving)
In my report, I use a simple arrow to indicate the direction a picture was taken (by reading the EXIF tag - GPSDirection in a plain table where I store the images). This works great, but each time I save and exit, the arrow indeed moves away from the center. It's happening with a simple arrow, or a SVG, which makes me think it's somehow relation only to the "rotation" option ? Hope that helps. Thanks
@CharlesGag the current workaround is to use a Marker layout item instead of North Arrow layout item. The marker can be rotated via a data defined override in the rotation tab.
@esnyder-rve You are right it seems to be working fine. I tried with an North Arrow AND with a regular arrow (shape) and I had the same inconclusive result with both so I thought the problem was with the rotation tab. I assumed it would do the same with the marker but I was wrong. Thanks for your help
Still happening with 3.30.0-'s-Hertogenbosch, also you are not able to select the item except via the Items panel so you can't drag it around
Thanks for mentioning my post.
This issue is still true for 3.34.4 and 3.34.11
Currently I use the "zoom and resize' with manually adding the rotation.
