[Qgis-user] All attribute info GONE!

Thu Oct 5 01:47:24 PDT 2017

Hi Merryn,

This issue happened to me a few weeks back when one of my colleagues was doing edits on .tab file in QGIS.

They went to delete a column in edit mode from the .tab file. When they saved it all attributes and geometry were deleted.

The layer name was still in the table of contents but contained no data.

Regards
Finbar

From: Qgis-user [mailto:qgis-user-bounces at lists.osgeo.org] On Behalf Of Andreas Neumann
Sent: 05 October 2017 08:38
To: Merryn Delaney
Cc: QGIS User List
Subject: Re: [Qgis-user] All attribute info GONE!

Hi Merryn,

Sorry, I can't help in this situation.

No backups around with older versions?

Andreas

On 2017-10-05 07:59, Merryn Delaney wrote:
The problem is... that I don't see the geometry. Everything is gone. I only see the name of the layer on the left of the page (let's say 'fencing') but there is no geometry and no attributes. Surely she didn't delete all the geometries associated with that layer and saved it? ohhhh I'm desperate. Months of work gone down the drain.

On Thu, Oct 5, 2017 at 1:57 PM, Andreas Neumann <a.neumann at carto.net<mailto:a.neumann at carto.net>> wrote:

Hi Merryn,

A feature in (Q)GIS always consists of geometry AND attributes. So if your geometries are around, also your attributes should be around. If you delete a feature, both geometry and attributes are removed for this particular feature.

If your attributes are gone, double check if the naming scheme is really correct. You mentioned that you don't see file extensions in Windows. You need to enable the display of the file extensions in the windows explorer to see them. Double check that they have the same basename and then just one extension (not accidentally two).

One can delete attribute table columns in the layer properties. But I don't think one does this by accident.

Andreas

On 2017-10-05 07:49, Merryn Delaney wrote:
Thanks Andreas,
I have found the .DBF. Sorry another question. Do you think it's possible that a person can delete (accidentally) all attributes info from a DBF? Maybe using the save as function? It seems really strange that all the info (polygons etc) have gone like that.

On Thu, Oct 5, 2017 at 1:43 PM, Andreas Neumann <a.neumann at carto.net<mailto:a.neumann at carto.net>> wrote:

Hi Merryn,

Ok - so it looks like you seem to use shp-Files. You absolutely need the .dbf file in order to view the attributes. Without this file, it won't work.

Sorry I can't help here - I don't know what happened in your system. Try to find the corresponding .dbf files.

Greetings,

Andreas

On 2017-10-05 07:35, Merryn Delaney wrote:
Hello,
Thank you for the prompt reply.
These are the files that she deleted..
.cpg
. (blank)
.prj
.qpj
.empty
.shx

How is it possible that she deleted all files and that the /dbf are completely gone??

Thank you.
M.

On Thu, Oct 5, 2017 at 1:30 PM, Andreas Neumann <a.neumann at carto.net<mailto:a.neumann at carto.net>> wrote:

Hi Merryn,

What data formats are you using?

In case you are using shapefiles - can you check if all the necessary files are around? Note that a shapefile consists of several files:
·         .shp --> geometry
·         .dbf --> attributes (perhaps this file is missing?)
·         .prj --> projection info
·         .shx --> index file
·         potentially more.

All files would have the same name, but they would have different file extensions. You need at least those two.

The two most important ones are .shp .dbf

Greetings,

Andreas

On 2017-10-05 07:25, Merryn Delaney wrote:
I've just got back home from maternity leave. The person who replaced me was not familiar with mapping softwares. I go back to open QGIS file and I discover that the main file and associated subfiles have been deleted. I restore them from the bins but when I open all the vectors are still there but attribute tables are empty!!! If i zoom to the file it doesn't show anything. Does anyone know what she could have done and how I can fix it? Is it possible that she saved as the vector with the same name and accidentally deleted all the data existing data??

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