[Qgis-user] adding a layer from a zipped file

[Stephen Sacks]

Hi Richard,
    Your "wild guess" is exactly right.  I tested it.  I copied file 
"GardenA.qml" into the same folder where "GardenA.zip" is located.  Then 
told QGIS to add vector layer "GardenA.zip".   It added layer "GardenA" 
using the correct color and labels.  A similar test added layer 
"GardenAtrees.zip" with the correct svg symbol.
    You've solved the mystery.  THANK YOU.
    I'm not happy with the resulting layer name ("GardenA - GardenA.shp" 
instead of just "GardenA") so I'll have to change all the layer names.  
But I can write a Python script to do that.)
     I've never used geopackages.  Something new for me to learn.
            Cheers,
                Steve


On 5/30/2022 3:44 AM, Richard Duivenvoorde wrote:
> Hi Stephen,
>
> Wild guessing here (not tested).
>
> I think: GDAL is responsible for loading the data from shape OR zipped 
> shape
> QGIS is responsible for loading of a corresponding qml file.
>
> Normally, when QGIS (using GDAL) loads foo.shp, it will check if there 
> is a foo.sld or foo.qml NEXT to it, and if so, uses it to STYLE the data.
>
> Now if you zipped foo.shp+files into foo.zip...
> Maybe QGIS is clever enough to ALSO look INTO the zip (and if not, 
> this would be a nice Feature Request...)
> But else: try to put foo.qml next to the foo.zip
>
> But if you zipped the files into bar.zip...
> Then I would try to put a 'bar.qml' next to it (and hoping that QGIS 
> decides that it has the same 'base name'.
>
> If all that fails: I would create a Feature Request for it (or start 
> using Geopackages ...)
>
> Note that using geopackages, you also have 1 file, and you can save 
> style INTO the geopackage (and even put more layers+styles into it etc 
> etc).
>
> Regards,
>
> Richard Duivenvoorde
>
>
>
> On 5/29/22 19:02, Stephen Sacks via Qgis-user wrote:
>> Hi Phil,
>>     Thanks for your reply.   This morning I updated my QGIS from 
>> version 3.16.3 to version 3.22.7 .  With complete optimism, I 
>> reloaded several layers from zipped shapefiles, but alas the problem 
>> remains:  polygons appear in random colors and without labels and 
>> point layers have dots instead of the svg icons they have when I load 
>> the same layers from the un-zipped six shapefile files.  When I 
>> examine the zip files with Windows File Explorer, I see the .qml 
>> files are there and uncorrupted.
>>     I'm using a five-year-old plain vanilla Dell desktop running 
>> 64-bit Windows 10.
>>     I did the zipping with Thunderbird's Archive.  Then, separately, 
>> zipped one layer with Windows File Explorer zipper. Same result.
>>     Am I doing something wrong?  Shall I try updating to  QGIS 3.24 
>> ?  Is it "stable"?  What does it mean that version 3.22 is "stable"?
>>
>>     Steve
>>
>>
>> On 5/29/2022 12:03 AM, Phil Wyatt wrote:
>>>
>>> Hi Stephen,
>>>
>>> You might let us know your operating system and which version of 
>>> QGIS you are using because it works as you desire in the latest 
>>> development (3.24.3)  and Long Term Release versions (3.22.7). It 
>>> may just be a matter of updating QGIS.
>>>
>>> Cheers - Phil
>>>
>>> *From:*Qgis-user <qgis-user-bounces at lists.osgeo.org> *On Behalf Of 
>>> *Stephen Sacks via Qgis-user
>>> *Sent:* Sunday, 29 May 2022 5:29 AM
>>> *To:* qgis forum <qgis-user at lists.osgeo.org>
>>> *Subject:* [Qgis-user] adding a layer from a zipped file
>>>
>>>
>>> When I write a layer as a shape file, it appears on my C: drive as 
>>> six files, all with the same name but different extensions.  Then I 
>>> zip those six into a single file (xxx.zip).  When I reload that 
>>> layer from the zip file (Layer > AddLayer > VectorLayer > File > 
>>> Dataset > xxx.zip), QGIS is almost smart enough to restore the layer 
>>> correctly.  The polygon features are in the right place and their 
>>> attribute table is correct. *My problem* is that it ignores one of 
>>> the six files, the "style" file (xxx .qml) which  specifies color, 
>>> labeling, and symbol).  Do I  have to unzip before restoring layer 
>>> xxx ?  I know I could open the layer's properties and use  Style > 
>>> Load Style from  file xxx.qml .  But when I'm restoring several 
>>> layers that's a lot of key strokes (and may require that I unzip).  
>>> It seems to me that this shouldn't be necessary.  [I encounter the 
>>> same problem with point layers and polygon layers.]
>>>
>>
>>
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