[Qgis-user] Loss of data

[Hernán De Angelis]

If you made changes to the tables and saved them then there is for me no 
obvious way to recover the information to its previous state.

Unless you had a backup of your original data which is always a good 
thing to have.

Good luck.


On 2020-11-15 10:12, Vladut Constandoiu wrote:
> Good morning,
>
> My name is Vladut Constandoiu, I'm a university student from Trento, 
> Italy and I'm using QGis for my master thesis.
> Yesterday I had a very unpleasant experience with QGis. I have a 
> shapefile that contains all of the different areas of the 
> river's hydrological basin on which I'm doing my project; every 
> element has two attributes: type (TIPO) and area (SUP). Somehow I 
> managed to erase those attributes from the attribute table and could 
> not do undo (ctrl+z or anything else) since the auto-save plug-in 
> activated exatly 2 seconds after  my mistake and saved the changes. 
> The shapefile contains about 6900 elements, and they were all sorted 
> by use, while now they are just areas without any information.
> Is there any way to recover a previous version of that shapefile so 
> that I don't have to spend uncountable hours putting all the 
> attributes back in?
> Here are three pictures of my work, previously and after the loss of 
> information.
>
> Before data loss:
> image.png
>
> After data loss + legend of types of area:
> image.png
>
> Attribute panel:
> image.png
>
> I would be enormously grateful to anyone who could help me find a 
> solution for this mess.
>
> Thank you very much in advance and have a nice day.
> Sincerely,
> Vladut Constandoiu
>
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