Very many thanks indeed! Really appreciate the support! Cheers Ross On 11 October 2011 14:53, Nathan Woodrow <[email protected]> wrote:
> I can't say it's best practice but I have done it before. You will need > remove the legendlayer and use the layerid= to find any links to that legend > item ie maplayer. You will also need to change the "projectlayers > layercount="83"" > > I have cc'd this to the developer mailing list in case someone on there > knows something that might help, before you start hacking away at things. > > - Nathan > > > On Tue, Oct 11, 2011 at 11:48 PM, Purves Ross <[email protected]>wrote: > >> Great suggestion. Thank you. I'm guessing you mean manually remove a whole >> <maplayer> tag at a time and reduce the total layers count in the XML file, >> right? Is the XML project file structure robust enough to allow me to >> manually 'hack' the file like this? >> >> Thanks again! >> Cheers >> Ross >> >> >> >> On 11 October 2011 14:45, Nathan Woodrow <[email protected]> wrote: >> >>> Very strange. The only thing I can think of at this time is take a >>> backup of your project and remove each layer one by one resaving and opening >>> the project each time to see if taking one out loads. >>> >>> See how you go with that. >>> >>> - Nathan >>> >>> >>> On Tue, Oct 11, 2011 at 11:33 PM, Purves Ross <[email protected]>wrote: >>> >>>> Hi Nathan, >>>> >>>> OK - even more strange. This string does not appear in my project file >>>> at all. I checked in a text editor and grepped to be absolutely sure. >>>> >>>> >>>> On 11 October 2011 14:20, Nathan Woodrow <[email protected]> wrote: >>>> >>>>> Can you search the xml in the project file for >>>>> VectorBackgroundMapMarch2011 >>>>> and post each line it is mentioned on. The only time QGIS will throw the >>>>> Data Source is invaild error is in the ogr provider and somehow it is >>>>> trying >>>>> to load your project as a layer which it then bombs on. >>>>> >>>>> - Nathan >>>>> >>>>> On Tue, Oct 11, 2011 at 11:10 PM, Nathan Woodrow >>>>> <[email protected]>wrote: >>>>> >>>>>> Very strange indeed. >>>>>> >>>>>> - Nathan >>>>>> >>>>>> >>>>>> On Tue, Oct 11, 2011 at 10:59 PM, Purves Ross >>>>>> <[email protected]>wrote: >>>>>> >>>>>>> OK, thanks for the tip re file number! Fingers crossed it's not that >>>>>>> though. >>>>>>> >>>>>>> Sorry - now I get you. You mean can I load the layer called >>>>>>> 'VectorBackgroundMapMarch2011' in its own right into a fresh project, >>>>>>> right? >>>>>>> Here's the rub - and also why I was confused by your question - there's >>>>>>> no >>>>>>> apparent layer with that name in the project! That's the name of the >>>>>>> overall >>>>>>> .qgs file, not a layer within it. Seems strange? >>>>>>> >>>>>>> Many thanks! >>>>>>> Ross >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> On 11 October 2011 13:53, Nathan Woodrow <[email protected]>wrote: >>>>>>> >>>>>>>> I recall hearing about a bug where layers fail to load if there is a >>>>>>>> certain number of files in the project but this might be something >>>>>>>> unrelated. >>>>>>>> >>>>>>>> I mean can you load >>>>>>>> /mnt/bunker/ross/Research/PhD/NewMapMarch2011/VectorBackgroundMapMarch2011 >>>>>>>> in QGIS on it's own in a fresh project. >>>>>>>> >>>>>>>> - Nathan >>>>>>>> >>>>>>>> On Tue, Oct 11, 2011 at 10:51 PM, Purves Ross < >>>>>>>> [email protected]> wrote: >>>>>>>> >>>>>>>>> Hi Nathan, >>>>>>>>> >>>>>>>>> OK - by counting the number of occurances of '<maplayer' in the >>>>>>>>> project file, I count 50 layers. Sounds a lot but there were no >>>>>>>>> problems in >>>>>>>>> 1.6 with this number! >>>>>>>>> >>>>>>>>> Sorry to be stupid, not sure what you mean by load the file by >>>>>>>>> itself. Are you saying that there is a way of selectively loading >>>>>>>>> layers on >>>>>>>>> opening a QGIS project file? Or do you mean opening the file in a text >>>>>>>>> editor or something. If the latter, then it certainly loads the XML >>>>>>>>> OK and >>>>>>>>> there's no evidence that the file is corrupted. >>>>>>>>> >>>>>>>>> Thanks again for the help! >>>>>>>>> Cheers >>>>>>>>> Ross >>>>>>>>> >>>>>>>>> >>>>>>>>> On 11 October 2011 13:44, Nathan Woodrow <[email protected]>wrote: >>>>>>>>> >>>>>>>>>> How many layers do you have in this project file? And can you >>>>>>>>>> load the file by itself? >>>>>>>>>> >>>>>>>>>> - Nathan >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> On Tue, Oct 11, 2011 at 10:35 PM, Ross Purves <[email protected] >>>>>>>>>> > wrote: >>>>>>>>>> >>>>>>>>>>> Hi Nathan, >>>>>>>>>>> >>>>>>>>>>> Very many thanks for the quick response! OK, running from the >>>>>>>>>>> command line gives me slight more info, to be sure: >>>>>>>>>>> >>>>>>>>>>> [Tue Oct 11 13:34:26 RMPT43:NewMapMarch2011 ]$ qgis >>>>>>>>>>> VectorBackgroundMapMarch2011 >>>>>>>>>>> Warning: loading of qgis translation failed >>>>>>>>>>> [/usr/share/qgis/i18n//qgis_en_GB] >>>>>>>>>>> Warning: loading of qt translation failed >>>>>>>>>>> [/usr/share/qt4/translations/qt_en_GB] >>>>>>>>>>> Warning: Couldn't load Python support library: Cannot load >>>>>>>>>>> library /usr/lib/qgispython: (/usr/lib/libqgispython.so: cannot >>>>>>>>>>> open shared >>>>>>>>>>> object file: No such file or directory) >>>>>>>>>>> Critical: Data source is invalid >>>>>>>>>>> Critical: >>>>>>>>>>> >>>>>>>>>>> Additionally, when I start QGIS this way I get a pop up window >>>>>>>>>>> within the graphical interface that says: >>>>>>>>>>> >>>>>>>>>>> The layer >>>>>>>>>>> /mnt/bunker/ross/Research/PhD/NewMapMarch2011/VectorBackgroundMapMarch2011 >>>>>>>>>>> is not a valid layer and can not be added to the map >>>>>>>>>>> >>>>>>>>>>> The strange thing is that I'm pretty certain there is no problem >>>>>>>>>>> with the project file. It's timestamp reads 22 April, when I last >>>>>>>>>>> worked on >>>>>>>>>>> it. I.e. the version of QGIS has changed but my file has remained >>>>>>>>>>> constant. >>>>>>>>>>> >>>>>>>>>>> Many thanks! >>>>>>>>>>> Ross >>>>>>>>>>> ________________________________________ >>>>>>>>>>> From: Nathan Woodrow [[email protected]] >>>>>>>>>>> Sent: 11 October 2011 13:26 >>>>>>>>>>> To: Purves Ross >>>>>>>>>>> Cc: [email protected] >>>>>>>>>>> Subject: Re: [Qgis-user] QGIS 1.6 project causing 1.7 to crash >>>>>>>>>>> >>>>>>>>>>> Hi Ross, >>>>>>>>>>> >>>>>>>>>>> That sounds a bit strange. Can you start QGIS from the terminal >>>>>>>>>>> and see what the output is when it locks up. >>>>>>>>>>> >>>>>>>>>>> - Nathan >>>>>>>>>>> >>>>>>>>>>> On Tue, Oct 11, 2011 at 10:19 PM, Purves Ross < >>>>>>>>>>> [email protected]<mailto:[email protected]>> wrote: >>>>>>>>>>> Hi there, >>>>>>>>>>> >>>>>>>>>>> I've updated my Ubuntu 10.10 installation to use QGIS 1.7. I put >>>>>>>>>>> a lot of work into a project using QGIS 1.6 but it won't open in >>>>>>>>>>> 1.7. The >>>>>>>>>>> layers all appear but then the screen freezes as though QGIS is >>>>>>>>>>> rendering >>>>>>>>>>> the resulting map forever. >>>>>>>>>>> >>>>>>>>>>> A bit of googling revealed that there was a bug at some point >>>>>>>>>>> which required the placement of 'gdal' between all >>>>>>>>>>> <provider></provider> >>>>>>>>>>> tags in the project XML file in a scenario like this. However, I >>>>>>>>>>> tried this >>>>>>>>>>> and it didn't work. I also have read various posts that say the use >>>>>>>>>>> of 'on >>>>>>>>>>> the fly' project appeared to cause problems going between 1.6 and >>>>>>>>>>> 1.7. The >>>>>>>>>>> project in question does indeed use on the fly projection. >>>>>>>>>>> >>>>>>>>>>> As a final note, I have an ECW raster layer in this map that >>>>>>>>>>> requires the modified GDAL to work. I thought that the crash might >>>>>>>>>>> be to do >>>>>>>>>>> with the upgrade having removed my modified version of GDAL. I >>>>>>>>>>> therefore >>>>>>>>>>> recompiled it all and have checked to see that my version of 1.7 >>>>>>>>>>> can now >>>>>>>>>>> read ECW files and it can (when they are presented a a fresh layer >>>>>>>>>>> and not >>>>>>>>>>> as part of the problematic project). >>>>>>>>>>> >>>>>>>>>>> This is a really, really important project to me and I do need to >>>>>>>>>>> get it back if at all possible. Please can anyone help? >>>>>>>>>>> >>>>>>>>>>> Very many thanks! >>>>>>>>>>> Ross Purves >>>>>>>>>>> >>>>>>>>>>> _______________________________________________ >>>>>>>>>>> Qgis-user mailing list >>>>>>>>>>> [email protected]<mailto:[email protected]> >>>>>>>>>>> http://lists.osgeo.org/mailman/listinfo/qgis-user >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >
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