Hi Andrew, Maybe it is worth a try to recreate the spatial index? Maybe it has defects or is incompatible. Just remove the .shx files and recreate them with QGIS in the layer properties --> Source tab.
Maybe it helps, Andreas On Thu, 28 Nov 2024 at 18:05, Andrew Chapman via QGIS-User < qgis-user@lists.osgeo.org> wrote: > Hi > > > > My first thought has been Scale Dependant Visibility but I confirmed that > it was off. However, text displays ok when I zoom in but the symbology > lines or points vanish – I don’t think one could do this with SDV without > two instances of the same layer and different styling. > > > > The suggestion of trying an earlier version of QGIS may be worth > investigating. I’m returning to QGIS now because we’ve had very bad > flooding (again) but I haven’t been involved for the last five years due to > health issues. A wrecked computer and finding that all the backups hadn’t > been 100% is rather complicating matters. > > > > I’ve found old QGIS setup exe files from 2013 and 2014 which I haven’t > tried to run yet as I’m not sure if they would load an earlier version in > parallel with my later version. > > > > Also, as the problem is associated with shapefiles, are there any > suggestions as to how then could be “sanitised”? It seems the problem files > are layers that I have created with earlier versions of QGIS while similar > aged ones that I’ve downloaded from Ordinance Survey work fine. > > > > Andrew > > > > *From:* Karl Magnus Jönsson [mailto:karl-magnus.jons...@kristianstad.se] > *Sent:* 28 November 2024 14:59 > *To:* Richard McDonnell; Andrew Chapman; qgis-user@lists.osgeo.org > *Subject:* Sv: [Qgis-user] Shapefile symbology no longer working when > zoom in > > > > Hi! > > Which old version are you migrating from? Could be worth trying some > intermediate version of QGIS. Open and save and then go to 3.40. > > > > Kind regards > > > > *Karl-Magnus Jönsson* > > > > *Från:* QGIS-User <qgis-user-boun...@lists.osgeo.org> *För *Richard > McDonnell via QGIS-User > *Skickat:* den 28 november 2024 15:07 > *Till:* Andrew Chapman <andrew.chap...@donkagen.co.uk>; > qgis-user@lists.osgeo.org > *Ämne:* Re: [Qgis-user] Shapefile symbology no longer working when zoom in > > > > Hi Andrew, > > Sounds like you have set *Scale Dependant Visibility*, setting a *Min* or *Max > Scale* in the *Symbology* or *Rendering* on the *Layer Properties* > > That would be my first port of call anyway. > > Kind Regard’s, > > > > Richard > > > > > > > *——* > *Richard McDonnell MSc GIS, FME Certified Professional* > *Flood Risk Management - Data Management* > > —— > *Oifig na nOibreacha Poiblí* > Office of Public Works > > *Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36 * > Jonathan Swift Street, Trim, Co Meath, C15 NX36 > —— > M +353 87 688 5964 T +353 46 942 2409 > https://gov.ie/opw > > —— > To send me files larger than 30MB, please use the link below > https://filetransfer.opw.ie/filedrop/richard.mcdonn...@opw.ie > > Email Disclaimer: > https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/ > > *From:* QGIS-User <qgis-user-boun...@lists.osgeo.org> *On Behalf Of *Andrew > Chapman via QGIS-User > *Sent:* 28 November 2024 13:38 > *To:* qgis-user@lists.osgeo.org > *Subject:* [Qgis-user] Shapefile symbology no longer working when zoom in > > > > I’ve not used QGIS for a number of years and now returned to version > 3.34.0. With projects that worked ok with earlier versions I find that some > shapefiles now only partially work when I zoom in. Text labels continue to > work but sybology markers (point and line) vanish when I zoom to scales > below about 1:10000. > > > > I’ve tried Vector->Geometry Tools->Check Validity but the problem still > exists. > > > > Any suggestions? > > > > > > Andrew Chapman > > > > > _______________________________________________ > QGIS-User mailing list > QGIS-User@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > -- -- Andreas Neumann QGIS.ORG board member (treasurer)
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